HEATER & AIR CONDITIONING CONTROL SYSTEM

Transcription

1 VTITI, TR & IR ITIR STI TR & IR ITII TR SYST TTS UTTI IR ITIR SI ISTI... 5 ISIS RIR WRW... 5 Work low...5 ISTI USTT... 6 escription & Inspection...6 UTI ISIS...10 RSSR TR UTI...10 escription...10 omponent art ocation...10 omponent s role...14 UTTI IR ITIR SYST...15 System iagram...15 System escription...15 omponent art ocation...21 omponent escription...25 UITI SYST...26 System escription...26 ISIS SYST (UT.)...27 iagnosis escription...27 SUT-III unction...31 ISIS SYST ()...33 IT...33 IT : SUT-III unction ( - IT)...33 IR ITIR...33 IR ITIR : SUT-III unction ( - UT IR ITIR)...33 T TR...34 T TR : SUT-III unction ( - T TR)...34 R TR SYST...35 escription...35 I-V VTITR R - TR SYST...37 escription...37 IR IX R TR SYST...39 escription...39 IT R TR SYST...41 escription...41 WR TR TR SYST...43 escription...43 T UT TR SYST...45 escription...45 T TR TR SYST...46 escription...46 T ISIS...47 R TR...47 escription...47 omponent unction heck...47 iagnosis rocedure...47 I-V VTITR R TR...50 escription...50 omponent unction heck...50 iagnosis rocedure...50 omponent Inspection...52 IR IX R TR...54 escription...54 omponent unction heck...54 iagnosis rocedure...54 IT R TR...59 escription...59 omponent unction heck

2 iagnosis rocedure WR TR escription omponent unction heck iagnosis rocedure omponent Inspection T UT escription omponent unction heck iagnosis rocedure omponent Inspection T TR escription omponent unction heck iagnosis rocedure omponent Inspection T SSR escription omponent unction heck iagnosis rocedure omponent Inspection I-VI SSR escription omponent unction heck iagnosis rocedure omponent Inspection SU SSR escription omponent unction heck iagnosis rocedure omponent Inspection IT SSR escription omponent unction heck iagnosis rocedure omponent Inspection WR SUY RU IRUIT R UT escription omponent unction heck iagnosis rocedure U ISIS R R16 : Reference Value R R20 : Reference Value R R : Reference Value (Y TR U) Reference Value UT Reference Value Wiring iagram IR ITIR - TR SYST SYT ISIS IR ITIR TR iagnosis hart y Symptom ISUIIT I escription Inspection procedure ISUIIT TI escription Inspection procedure IS escription Inspection procedure S-ISIS T R- R escription Inspection procedure RY UTI S T RT..130 escription Inspection procedure RUTI RUTIS recaution for Supplemental Restraint System (SRS) "IR " and "ST T R-T- SIR" recaution ecessary for Steering Wheel Rotation fter attery isconnect recaution for rocedure without owl Top over. 132 Working with -134a (R-134a) eneral Refrigerant recaution Refrigerant onnection Service quipment RSSR eneral recautions URST TTR eneral recautions U IR ITIR SI ISTI : Reference Value ISIS RIR WRW Work low

3 ISTI USTT escription & Inspection UTI ISIS RSSR TR UTI escription omponent art ocation omponent s role U IR ITIR SYST System escription omponent art ocation omponent escription ISIS SYST () IT IT : SUT-III unction ( - IT) omponent unction heck iagnosis rocedure omponent Inspection WR SUY RU IRUIT R TR TR escription omponent unction heck iagnosis rocedure U IR ITIR SYST Wiring iagram IR ITIR - TR SYST U ISIS R R16 : Reference Value IR ITIR IR ITIR : SUT-III unction ( - U IR ITIR) T TR T TR : SUT-III unction ( - T TR) T UT TR SYST escription T TR TR SYST escription T ISIS I-V VTITR R TR escription omponent unction heck iagnosis rocedure omponent Inspection IT R TR escription omponent unction heck iagnosis rocedure WR TR escription omponent unction heck iagnosis rocedure omponent Inspection T UT escription omponent unction heck iagnosis rocedure omponent Inspection T TR escription R R20 : Reference Value : Reference Value R R : Reference Value (Y TR U) Reference Value SYT ISIS IR ITIR TR iagnosis hart y Symptom ISUIIT I escription Inspection procedure ISUIIT TI escription Inspection procedure IS escription Inspection procedure RUTI RUTIS recaution for Supplemental Restraint System (SRS) "IR " and "ST T R-T- SIR" recaution ecessary for Steering Wheel Rotation fter attery isconnect recaution for rocedure without owl Top over..219 Working with -134a (R-134a) eneral Refrigerant recaution Refrigerant onnection Service quipment...222

4 RSSR eneral recautions URST TTR eneral recautions

5 ISIS RIR WRW < SI ISTI > [UTTI IR ITIR] SI ISTI ISIS RIR WRW Work low TI W II: IST T USTR IT isten to customer complaint. (et detailed information about the conditions and environment when the symptom occurs.) >> T 2. 2.VRIY T SYT WIT RTI Verify the symptom with operational check. Refer to -6, "escription & Inspection". >> T T RRIT TRU ISIS o to appropriate trouble diagnosis (Refer to -122, "iagnosis hart y Symptom" below). >> T 4. 4.RIR R R Repair or replace the specific parts. >> T 5. 5.I inal check. YS >> UT >> T 3. -5

6 ISTI USTT < SI ISTI > [UTTI IR ITIR] ISTI USTT escription & Inspection II: SRITI The purpose of the operational check is to check if the individual system operates properly. onditions : ngine running at normal operating temperature ISTI RUR emory unction 1. Turn temperature control dial (driver side) clockwise until 30.0 is displayed. 2. ress / switch. 3. Turn ignition switch. 4. Turn ignition switch. 5. ress UT switch. 6. onfirm that the set temperature remains at previous temperature. 7. ress / switch. If, go to trouble diagnosis procedure for -130, "Inspection procedure". If, continue the check. lower 1. Turn fan control dial clockwise. lower should operate on low speed. 2. Turn fan control dial clockwise again, and continue checking blower speed until all speeds are checked. 3. eave blower on max. speed. If, go to trouble diagnosis procedure for -62, "iagnosis rocedure". If, continue the check. ischarge ir ( switch and switch) 1. ress switches and switch. 2. ach position indicator should illuminate. 3. onfirm that discharge air comes out according to the air distribution table. Refer to -15, "System escription". If, go to trouble diagnosis procedure for -47, "iagnosis rocedure". If, continue the check. T: onfirm that the magnet clutch is engaged (sound or visual inspection) and intake door position is at R when the / or is selected. ischarge ir (igh-level ventilator switch) 1. ress high-level ventilator switch. igh-level ventilator switch indicator should illuminate. -6 II0082

7 ISTI USTT < SI ISTI > [UTTI IR ITIR] 2. onfirm that discharge air comes out. 3. ress high-level ventilator switch again. igh-level ventilator indicator should not illuminate. If, go to trouble diagnosis procedure for -50, "iagnosis rocedure". If, continue the check. Intake ir 1. ress recirculation (R) switch. Recirculation indicator should illuminate. 2. ress fresh (R) switch. resh indicator should illuminate. 3. isten for intake door position change. (Slight change of blower sound can be heard.) If, go to trouble diagnosis procedure for -59, "iagnosis rocedure". If, continue the check. T: onfirm that the magnet clutch is engaged (sound or visual inspection) and intake door position is at R when the / or is selected. Temperature ecrease 1. Turn temperature control dial (driver side) counterclockwise until 16.0 is displayed. 2. heck for cold air at discharge air outlets. If, go to trouble diagnosis procedure for -123, "Inspection procedure". If, continue the check. Temperature Increase 1. Turn temperature control dial (driver side) clockwise until 30.0 is displayed. 2. heck for hot air at discharge air outlets. If, go to trouble diagnosis procedure for -125, "Inspection procedure". If, continue the check. / Switch 1. ress UT switch and / switch. 2. / switch indicator will turn. onfirm that the magnet clutch engages (sound or visual inspection). uto ode 1. ress UT switch and / switch. 2. UT switch indicator will turn. onfirm that discharge air and blower speed will depend on ambient, in-vehicle, and set temperatures. If, go to trouble diagnosis procedure for -89, "iagnosis rocedure", then if necessary, trouble diagnosis procedure for -66, "iagnosis rocedure". If all operational checks are (symptom cannot be duplicated), go to Incident Simulation Tests in I-38, "Work low" and perform tests as outlined to simulate driving conditions environment. If symptom appears, refer to -122, "iagnosis hart y Symptom" and perform applicable trouble diagnosis procedures. UXIIRY IS Temperature Setting Trimmer The trimmer compensates for differences in range of ±3 between temperature setting (displayed digitally) and temperature felt by customer. perating procedures for this trimmer are as follows: 1. egin self-diagnosis ST-5 mode. Refer to -27, "iagnosis escription". 2. Turn fan control dial clockwise to set system in auxiliary mode. 3. isplay shows 61 in auxiliary mechanism. It takes approximately 3 seconds to enable setting operation. 4. Turn temperature control dial (driver side) as desired. Temperature will change at a rate of 0.5 each time a dial is turned. UTI: decimal point is not indicated on the display. -7

8 ISTI USTT < SI ISTI > [UTTI IR ITIR] egative value is displayed on the left side display. When battery cable is disconnected or battery voltage is below 10 V, trimmer operation is canceled. Temperature set becomes that of initial condition, i.e. 0. Inlet ort emory unction When ignition switch is turned from to, inlet port can be set to UT or manual. perating procedures for this trimmer are as follows: 1. egin self-diagnosis ST-5 mode. Refer to -27, "iagnosis escription". 2. Turn fan control dial clockwise to set system in auxiliary mode. 3. ress recirculation (R) and fresh (R) switch as desired. II0089 Switch status of R/R switch Setting status Setting changeover method R anual R status is memorized. (Initial setting) UT control R switch: R anual R status is memorized. UT control (Initial setting) R switch: -8

9 ISTI USTT < SI ISTI > [UTTI IR ITIR] When battery cable is disconnected or battery voltage is below 10 V, memory function is canceled. emory function set becomes that of initial condition. -9

10 RSSR TR UTI < UTI ISIS > [UTTI IR ITIR] UTI ISIS RSSR TR UTI escription RII RTI ompressor is not activated. unctional circuit diagram II: SII0306 (1) : an SW signal S (3) : efogger signal (2) : / SW signal (1) : / signal (3) : ngine coolant temperature signal (2) : ompressor request signal S (1) : an signal (3) : ngine coolant temperature signal S (2) : / SW signal unctional initial inspection chart ocation T ITR Yes Yes Yes T ITR Yes SUT-III I /R T ITR Yes ITI TR T ITR Yes UT TIV TST Self-diagnosis function (except diagnosis) Yes Yes Yes omponent art ocation II: I RTT -10

11 RSSR TR UTI < UTI ISIS > [UTTI IR ITIR] 1. Refrigerant pressure sensor 2. ompressor 3. T sensor SSR RTT odels II

12 RSSR TR UTI < UTI ISIS > [UTTI IR ITIR] II Sunload sensor 2. igh-level ventilator door motor 3. Intake door motor 4. ir mix door motor (passenger side) 5. lower motor 6. ode door motor 7. an control amp. 8. ir mix door motor (driver side) 9. In-vehicle sensor 10. T heater 11. igh-level ventilator switch 12. uto amp. 13. Intake sensor R odels -12

13 RSSR TR UTI < UTI ISIS > [UTTI IR ITIR] 1. Sunload sensor 2. ir mix door motor (driver side) 3. Intake door motor 4. igh-level ventilator door motor 5. an control amp. 6. ode door motor 7. lower motor 8. ir mix door motor (passenger side) 9. T heater 10. igh-level ventilator switch 11. uto amp. 12. Intake sensor 13. In-vehicle sensor II0163ZZ -13

14 RSSR TR UTI < UTI ISIS > [UTTI IR ITIR] omponent s role II: omponent ir mix door motor uto amp. lower motor ompressor an control amp. igh-level ventilator door motor igh-level ventilator switch Intake door motor Intake sensor In-vehicle sensor ode door motor T sensor T heater Refrigerant pressure sensor Sunload sensor Reference -54, "escription" -89, "escription" -62, "escription" -66, "escription" -65, "omponent Inspection" -50, "escription" -52, "omponent Inspection" -59, "escription" -86, "escription" -80, "escription" -47, "escription" -77, "escription" -76, "omponent Inspection" -70, "omponent Inspection" -83, "escription" -14

15 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] UTTI IR ITIR SYST System iagram II: TR SYST The control system consists of input sensors, switches, auto amp. (microcomputer) and outputs. The relationship of these components is shown in the figure below: System escription TR RTI ontroller II0119 II: II

16 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] Switch The air discharge outlets is controlled with there switches. Temperature ontrol ial [otentio Temperature ontrol (river Side)] The set temperature is increased or decreased with this dial. Temperature ontrol ial [otentio Temperature ontrol (assenger Side)] The set temperature is increased or decreased with this dial. When the temperature control dial is turned, the U switch indicator will automatically illuminate. UT Switch The compressor, intake door, air mix doors, mode doors and blower speed are automatically controlled so that the in-vehicle temperature will reach, and be maintained at the set temperature selected by the operator. When pressing UT switch, air inlet, air outlet, fan speed, and discharge air temperature are automatically controlled. efroster () Switch ode doors are set to the defrost position with this switch. lso, intake door is set to the outside air position, and compressor turns. / Switch ompressor is or with this switch. (ressing the / switch when the / switch is will turn the / switch and compressor.) an ontrol ial The blower speed is manually controlled with this dial. Seven speeds are available for manual control (as shown on the s). / Switch ompressor and blower are, mode door is set to the foot position, and intake door is automatically controlled. Rear Window efogger Switch When illumination is, rear window is defogged. Recirculation (R) Switch When recirculation (R) switch is, R turns, and air inlet is fixed to R. When press recirculation (R) switch again, R turns, and then, automatic control mode is entered. When R is turned, shifting mode position to / or, or when compressor is turned from to, intake switch is automatically turned (fixed to automatic control mode). R mode can be reentered by pressing intake switch again, and then compressor is turned. (xcept / or position) resh (R) Switch When fresh (R) switch is, R turns, and air inlet is fixed to R. When press fresh (R) switch again, R turns, and then, automatic control mode is entered. U Switch When the U switch is turned, the driver side and passenger side, temperature can each be set independently. When the U switch is not turned, the driver side outlet and setting temperature is applied to both sides. igh-level Ventilator Switch When high-level ventilator switch is, high-level ventilator switch indicator turn, and high-level ventilator door is opened. -16

17 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] ISR IR W SII

18 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] SWITS TIR TR UTI II0080 II0081 IR ITIR TR SYST The (ocal rea etwork) system consists of auto amp., mode door motor, high-level ventilator door motor, air mix door motors and intake door motor. configuration of these components is shown in the figure below. -18 II0106

19 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] SYST STRUTI small network is constructed between the auto amp., mode door motor, high-level ventilator door motor, air mix door motors and intake door motor. The auto amp. and motors are connected by data transmission lines and motor power supply lines. The network is built through the ground circuits of each door motor. ddresses, motor opening angle signals, motor stop signals and error checking messages are all transmitted through the data transmission lines connecting the auto amp. and each door motor. The following functions are contained in Us built into the mode door motor, the high-level ventilator door motor, the air mix door motors and the intake door motor. ddress otor opening angle signals ata transmission otor stop and drive decision pening angle sensor (R function) omparison ecision (uto amp. indicated value and motor opening angle comparison) II0107 peration The auto amp. receives data from each of the sensors. The auto amp. sends mode door, high-level ventilator door, air mix door and intake door opening angle data to the mode door motor U, high-level ventilator door motor U, air mix door motor Us and intake door motor U. The mode door motor, high-level ventilator door motor, air mix door motors and intake door motor read their respective signals according to the address signal. pening angle indication signals received from the auto amp. and each of the motor position sensors is compared by the Us in each door motor with the existing decision and opening angles. Subsequently, T/, /VT, /SUT and R/R operation is selected. The new selection data is returned to the auto amp. II0108 Transmission ata and Transmission rder uto amp. data is transmitted consecutively to each of the doors motor following the form shown in the figure below. STRT: Initial compulsory signal is sent to each of the door motors. RSS: ata sent from the auto amp. are selected according to data-based decisions made by the mode door motor, high-level ventilator door motor, air mix door motors and intake door motor. If the addresses are identical, the opening angle data and error check signals are received by the door motor Us. The Us then make the appropriate error decision. If the opening angle data have no error, door control begins. If an error exists, the received data are rejected and corrected data received. inally, door control is based upon the corrected opening angle data. -19

20 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] I : ata that shows the indicated door opening angle of each door motor. RRR : In this procedure, transmitted and received data is checked for errors. rror data are then compiled. The error check prevents corrupted data from being used by the mode door motor, the high-level ventilator door motor, the air mix door motors and the intake door motor. rror data can be related to the following symptoms. - alfunction of electrical frequency - oor electrical connections - Signal leakage from transmission lines - Signal level fluctuation ST SI: t the end of each transmission, a stop operation, in-operation, or internal malfunction message is delivered to the auto amp. This completes one data transmission and control cycle. II0109 IR IX R TR (UTTI TRTUR TR) The air mix doors are automatically controlled so that in-vehicle temperature is maintained at a predetermined value by the temperature setting, ambient temperature, in-vehicle temperature and amount of sunload. S TR lower speed is automatically controlled by the temperature setting, ambient temperature, in-vehicle temperature, intake temperature, amount of sunload and air mix door position. With pressing UT switch, the blower motor starts to gradually increase air flow volume. When engine coolant temperature is low, the blower motor operation is delayed to prevent cool air from flowing. IT R TR The intake doors are automatically controlled by the temperature setting, ambient temperature, in-vehicle temperature, intake temperature, amount of sunload and / operation of the compressor. R TR The mode door is automatically controlled by the temperature setting, ambient temperature, in-vehicle temperature, intake temperature and amount of sunload. I-V VTITR R TR The high-level ventilator door is controlled by high-level ventilator door switch. -20

21 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] T UT TR When / switch, UT switch, /T switch, switch is pressed, auto amp. transmits compressor signal to. sends compressor signal to, via communication. judges whether compressor can be turned, based on each sensor status (refrigerant-pressure sensor signal, throttle angle, etc.). If it judges compressor can be turned, it sends compressor signal to I /R, via communication. Upon receipt of compressor signal from, I /R turns air conditioner relay to operate compressor. When sending compressor signal to I /R via communication, simultaneously sends compressor feedback signal to combination meter via communication. ombination meter sends compressor feedback signal to auto amp., then, uses input compressor feedback signal to control air inlet. omponent art ocation I RTT II0120 II:

22 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] II Refrigerant pressure sensor 2. ompressor 3. T sensor SSR RTT odels -22

23 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] 1. Sunload sensor 2. igh-level ventilator door motor 3. Intake door motor 4. ir mix door motor (passenger side) 5. lower motor 6. ode door motor 7. an control amp. 8. ir mix door motor (driver side) 9. In-vehicle sensor 10. T heater 11. igh-level ventilator switch 12. uto amp. 13. Intake sensor II0104 R odels -23

24 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] II0163ZZ 1. Sunload sensor 2. ir mix door motor (driver side) 3. Intake door motor 4. igh-level ventilator door motor 5. an control amp. 6. ode door motor 7. lower motor 8. ir mix door motor (passenger side) 9. T heater 10. igh-level ventilator switch 11. uto amp. 12. Intake sensor 13. In-vehicle sensor -24

25 UTTI IR ITIR SYST < UTI ISIS > [UTTI IR ITIR] omponent escription II: omponent ir mix door motor uto amp. lower motor ompressor an control amp. igh-level ventilator door motor igh-level ventilator switch Intake door motor Intake sensor In-vehicle sensor ode door motor T sensor T heater Refrigerant pressure sensor Sunload sensor Reference -54, "escription" -89, "escription" -62, "escription" -66, "escription" -65, "omponent Inspection" -50, "escription" -52, "omponent Inspection" -59, "escription" -86, "escription" -80, "escription" -47, "escription" -77, "escription" -76, "omponent Inspection" -70, "omponent Inspection" -83, "escription" -25

26 UITI SYST < UTI ISIS > [UTTI IR ITIR] UITI SYST System escription II: (ontroller rea etwork) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. any electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In communication, control units are connected with 2 communication lines (- line, - line) allowing a high rate of information transmission with less wiring. ach control unit transmits/receives data but selectively reads required data only. or details, refer to -22, " System Specification hart". -26

27 ISIS SYST (UT.) < UTI ISIS > [UTTI IR ITIR] ISIS SYST (UT.) iagnosis escription S-ISIS SYST The self-diagnosis system is built into the auto amp. to quickly locate the cause of malfunctions. II: S-ISIS UTI The self-diagnosis system diagnoses sensors, door motors, blower motor, etc. by system line. Refer to applicable sections (items) for details. Shifting from normal control to the self-diagnosis system is accomplished by starting the engine (turning the ignition switch ) and pressing / switch for at least 5 seconds. The / switch must be pressed within 10 seconds after starting the engine (ignition switch is turned ). This system will be canceled by either pressing UT switch or turning the ignition switch. Shifting from one step is accomplished by means of turning temperature control dial (driver side), as required. Shifting from ST-5 to UXIIRY IS is accomplished by means of pressing fan control dial clockwise. RTI T 1.ST I S-ISIS SII

28 ISIS SYST (UT.) < UTI ISIS > [UTTI IR ITIR] 1. Turn ignition switch. 2. Set in self-diagnosis mode as follows. Within 10 seconds after starting engine (ignition switch is turned.), press / switch for at least 5 seconds. T: If battery voltage drops below 12 V during diagnosis ST-3, door motor speed becomes slower and as a result, the system may generate an error even when operation is normal. To avoid this, start engine before performing this diagnosis. >> T 2. 2.ST-1: S ISY R heck s (1) illumination and display screen (2). Is this inspection result normal? YS >> T 3. >> alfunctioning / switch or auto amp. Refer to -129, "Inspection procedure". 3.ST-2: SSR R TR IRUITS R R R SRT IRUIT Turn temperature control dial (driver side) clockwise. oes code o. 20 appear on the display? YS >> T 4. >> T 11. II0173ZZ II ST-3: R, I-V VTITR R IT R SITIS R Turn temperature control dial (driver side) clockwise. oes code o. 30 appear on the display? YS >> T 5. >> T ST-4: RTI R TR IS II

29 ISIS SYST (UT.) < UTI ISIS > [UTTI IR ITIR] 1. Turn temperature control dial (driver side) clockwise. 2. ress () switch. ode o. of each door motor test is indicated on the display. >> T 6. II TUTRS Refer to the following chart and check discharge air flow, air temperature, blower motor voltage and compressor operation. II0082 ode o ode door position VT / 1 / 2 T / Intake door position R R 20% R R R R ir mix door position U U U T U T U T U T lower motor voltage 5 V V 8.5 V 8.5 V 8.5 V V ompressor igh-level ventilator door position SUT SUT hecks must be made visually, by listening the sound, or by touching air outlets with hand, etc. for improper operation. Is this inspection result normal? YS >> T >> ir outlet does not change. Refer to -47, "iagnosis rocedure". -2 >> Intake door does not change. Refer to -59, "iagnosis rocedure". -3 >> ischarge air temperature does not change. Refer to -54, "iagnosis rocedure". -4 >> lower motor operation is malfunctioning. Refer to -62, "iagnosis rocedure". -5 >> agnet clutch does not engage. Refer to -66, "iagnosis rocedure". -6 >> igh-level ventilator door does not change.- Refer to -50, "iagnosis rocedure". 7.ST-5: TRTUR SSR IS 1. Turn temperature control dial (driver side) clockwise. 2. ode o. 51 appears on the display. >> T

30 ISIS SYST (UT.) < UTI ISIS > [UTTI IR ITIR] 8. T SSR ress () switch one time. Temperature detected by T sensor is indicated on the display. T: If the temperature indicated on the display greatly differs from the actual temperature, check sensor circuit first, and then check sensor. Is this inspection result normal? YS >> T 9. >> o to T Sensor ircuit. Refer to -77, "iagnosis rocedure". 9. I-VI SSR ress () switch for the one time. Temperature detected by in-vehicle sensor is indicated on the display. T: If the temperature indicated on the display greatly differs from the actual temperature, check sensor circuit first, and then check sensor. Is this inspection result normal? YS >> T 10. >> o to In-vehicle Sensor ircuit. Refer to -81, "iagnosis rocedure". 10. IT SSR ress () switch for the one time. Temperature detected by intake sensor is indicated on the display. T: If the temperature indicated on the display greatly differs from the actual temperature, check sensor circuit first, and then check sensor. Is this inspection result normal? YS >> T 11. >> o to Intake Sensor ircuit. Refer to -86, "iagnosis rocedure". II0110 II UTII SSR R TR Refer to the following chart for malfunctioning code o. (If two or more sensors and door motors malfunction, corresponding code os. indicates 1 second each.) II0112 ode o. alfunctioning sensor and door motor (Including circuits) Reference 21 / 21 T sensor -77, "iagnosis rocedure" 22 / 22 In-vehicle sensor -81, "iagnosis rocedure" 24 / 24 Intake sensor -86, "iagnosis rocedure" 25 / 25 Sunload sensor * -83, "iagnosis rocedure" 26 / 26 ir mix door motor R (river side) 27 / 27 ir mix door motor R (assenger side) -54, "iagnosis rocedure" *: erform self-diagnosis ST-2 under sunshine. -30

31 ISIS SYST (UT.) < UTI ISIS > [UTTI IR ITIR] When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise code o. 25 will indicate despite that sunload sensor is functioning properly. >> ISTI 12. UTII R TR SITI SWIT ode, high-level ventilator and/or intake door motor R(s) is/are malfunctioning. II0114 ode o. *1 *2 *3 ode, high-level ventilator or intake door position Reference 31 igh-level ventilator door open igh-level ventilator door motor -50, "iagnosis rocedure" 32 igh-level ventilator door shut 33 VT 34 / 1 35 / R 38 20% R 39 R ode door motor Intake door motor -47, "iagnosis rocedure" -59, "iagnosis rocedure" (If two or more door motors are malfunctioning, corresponding code os. indicates 1 second each.) *1: If high-level ventilator door motor harness connector is disconnected, the following display pattern will appear to 31 *2: If mode door motor harness connector is disconnected, the following display pattern will appear Return to 33 *3: If intake door motor harness connector is disconnected, the following display pattern will appear Return to 37 II0115 >> ISTI SUT-III unction II: SUT-III ITI ITS SUT-III can display each diagnosis item using the diagnosis test modes shown following. -31

32 ISIS SYST (UT.) < UTI ISIS > [UTTI IR ITIR] System part heck item, diagnosis mode escription ata monitor isplays input data in real time. ata monitor isplays input data in real time. T ITR isplay Item ist () With asoline ngine onitor Item ondition Value/Status RSS S ngine is running Warm-up condition oth / switch and blower fan motor switch: (ompressor operates.) V With iesel ngine onitor Item ondition Value/Status RRRT RSS ngine is running Warm-up condition ir conditioner switch: Shift lever: eutral position o load pproximately 5.7 bar isplay Item ist () onitor Item ondition Value/Status I SW Ignition switch n SI Ignition switch lower fan motor switch lower fan motor switch n IR SW Ignition switch ompressor ompressor n -32

33 ISIS SYST () < UTI ISIS > [UTTI IR ITIR] ISIS SYST () IT IT : SUT-III unction ( - IT) ITI IT SUT-III performs the following functions via communication with. iagnosis mode Work Support Self iagnostic Result iag Support onitor ata onitor ctive Test cu Identification onfiguration SYST ITI can perform the following functions for each system. T: It can perform the diagnosis modes except the following for all sub system selection items. IR ITIR unction escription hanges the setting for each system function. isplays the diagnosis results judged by. Refer to S-62, "T Index". onitors the reception status of communication viewed from. The input/output signals are displayed. The signals used to activate each device are forcibly supplied from. The part number is displayed. nables to read and save the vehicle specification. nables to write the vehicle specification when replacing. II: : pplicable item iagnosis mode System Sub system selection item WR SURT T ITR TIV TST oor lock R Rear window defogger RR R Warning chime UZZR Interior room lamp IT Remote keyless entry system UTI RT T xterior lamp Wiper and washer WIR Turn signal and hazard warning lamps SR ir conditioner IR ITR Intelligent ey system ITIT Y ombination switch SW Immobilizer IU Interior room lamp battery saver TTRY SVR ack door open TRU Vehicle security system TT Signal buffer system SI UR T heater system T TR IR ITIR : SUT-III unction ( - UT IR ITIR) II: T ITR isplay Item ist -33

34 ISIS SYST () < UTI ISIS > [UTTI IR ITIR] I SW onitor Item [Unit] [n/] ontents isplays [ignition switch position (n)/(), position ()] status as judged form ignition switch signal. SI [n/] isplays [ (n)/ ()] status as judged form blower fan motor switch signal. IR SW [n/] isplays [ (n)/ ()] status as judged form air conditioner switch signal. T TR T TR : SUT-III unction ( - T TR) II: T ITR isplay Item ist onitor Item [Unit] WR UT [/RZ/IT] SI [n/] I STTUS [ST/ST/RU/R] T T [ ] TTRY VT [V] I R [rpm] UTSI T [ ] escription isplays [/RZ/IT] condition of the T heater states. isplays [ ()/ ()] status as judged from blower fan motor signal. isplays [ST/ST/RU/R] condition of the engine states. The engine coolant temperature (determined by the signal voltage of the engine coolant temperature sensor) is displayed. The power supply voltage of is displayed. Indicates the engine speed computed from the signal of the crankshaft position sensor. The outside air temperature (determined by the signal voltage of the T sensor) is displayed. TIV TST Test item Test Item peration escription T TR T 1 T 2 T 3 This test is able to check T heater operation. -34

35 R TR SYST < UTI ISIS > [UTTI IR ITIR] R TR SYST escription SYST SRITI omponent arts II: ode door control system components are: uto amp. ode door motor (U) / system (R built-in mode door motor, high-level ventilator door motor, air mix door motor and intake door motor) In-vehicle sensor T sensor Sunload sensor Intake sensor System peration The auto amp. receives data from each of the sensors. The auto amp. sends air mix door, mode door, high-level ventilator door and intake door opening angle data to the air mix door motor Us, mode door motor U, high-level ventilator door motor U and intake door motor U. The air mix door motors, mode door motor, high-level ventilator door motor and intake door motor read their respective signals according to the address signal. pening angle indication signals received from the auto amp. and each of the motor position sensors are compared by the Us in each door motor with the existing decision and opening angles. Subsequently, T/, /VT, /SUT and R/R operation is selected. The new selection data are returned to the auto amp. II

36 R TR SYST < UTI ISIS > [UTTI IR ITIR] System ircuit ode oor ontrol Specification ode position can be selected manually by pressing switch or switch of the controller. This enables to fix a mode position. utomatic control by auto amp. ressing UT switch allows automatic control by auto amp. uring the automatic control of mode position, a mode door position (VT, /, T, or /) is selected based on a target air mix door opening angle and sunload depending on a temperature calculated by auto amp. In addition, / is selected to prevent windshield fogging only when ambient temperature is extremely low with mode position T. II0122 II

37 I-V VTITR R TR SYST < UTI ISIS > [UTTI IR ITIR] I-V VTITR R TR SYST escription SYST SRITI omponent arts II: i-level ventilator door control system components are: uto amp. igh-level ventilator door motor (U) / system (R built-in mode door motor, high-level ventilator door motor, air mix door motor and intake door motor) igh-level ventilator switch System peration The auto amp. sends air mix door, mode door, high-level ventilator door and intake door opening angle data to the air mix door motor Us, mode door motor U, high-level ventilator door motor U and intake door motor U. The air mix door motors, mode door motor, high-level ventilator door motor and intake door motor read their respective signals according to the address signal. pening angle indication signals received from the auto amp. and each of the motor position sensors are compared by the Us in each door motor with the existing decision and opening angles. Subsequently, T/, /VT, /SUT and R/R operation is selected. The new selection data are returned to the auto amp. II

38 I-V VTITR R TR SYST < UTI ISIS > [UTTI IR ITIR] System ircuit II

39 IR IX R TR SYST < UTI ISIS > [UTTI IR ITIR] IR IX R TR SYST escription SYST SRITI omponent arts II: ir mix door control system components are: uto amp. ir mix door motor (U) / system (R built-in mode door motor, high-level ventilator door motor, air mix door motor and intake door motor) In-vehicle sensor T sensor Sunload sensor Intake sensor System peration The auto amp. receives data from each of the sensors. The auto amp. sends air mix doors, mode door, high-level ventilator door and intake door opening angle data to the air mix door motor Us, mode door motor U, high-level ventilator door motor U and intake door motor U. The air mix door motors, mode door motor, high-level ventilator door motor and intake door motor read their respective signals according to the address signal. pening angle indication signals received from the auto amp. and each of the motor position sensors are compared by the Us in each door motor with the existing decision and opening angles. Subsequently, T/, /VT, /SUT and R/R operation is selected. The new selection data are returned to the auto amp. SII

40 IR IX R TR SYST < UTI ISIS > [UTTI IR ITIR] System ircuit ir ix oor ontrol Specification When ignition switch is, auto amp. continuously and automatically controls temperatures regardless of air conditioner operational condition. When setting a target temperature with temperature control dial, auto amp. corrects the set temperature and decides a target air mix door opening angle. uto amp. controls air mix door according to the target air mix door opening angle and current air mix door opening angle in order to keep an optimum air mix door opening angle. When a temperature is set at 16.0, air mix door is fixed at full cold, and when a temperature is set at 30.0, it is set at full hot. II0122 R457-40

41 IT R TR SYST < UTI ISIS > [UTTI IR ITIR] IT R TR SYST escription SYST SRITI omponent arts II: Intake door control system components are: uto amp. Intake door motor (U) / system (R built-in mode door motor, high-level ventilator door motor, air mix door motor and intake door motor) In-vehicle sensor T sensor Sunload sensor Intake sensor System peration The auto amp. receives data from each of the sensors. The auto amp. sends air mix doors, mode door, high-level ventilator door and intake door opening angle data to the air mix door motor Us, mode door motor U, high-level ventilator door motor U and intake door motor U. The air mix door motors, mode door motor, high-level ventilator door motor and intake door motor read their respective signals according to the address signal. pening angle indication signals received from the auto amp. and each of the motor position sensors are compared by the Us in each door motor with the existing decision and opening angles. Subsequently, T/, /VT, /SUT and R/R operation is selected. The new selection data are returned to the auto amp. The intake door control determines intake door position based on the ambient temperature, the intake air temperature and the in-vehicle temperature. When shifting mode position /, when the or switches are pressed, or when / switch is, the auto amp. sets the intake door at the R position. II

42 IT R TR SYST < UTI ISIS > [UTTI IR ITIR] System ircuit Intake oor ontrol Specification Intake door position is basically fixed at R when R indicator lamps of switch and intake switch turn, and fixed at R when R indicator lamp of intake switch turns. Intake door automatic control selects R, 20%R, or R depending on a target air mix door opening angle, based on in-vehicle temperature, ambient temperature, and sunload. II0122 R383-42

43 WR TR TR SYST < UTI ISIS > [UTTI IR ITIR] WR TR TR SYST escription SYST SRITI omponent arts an speed control system components are: uto amp. / system (R built-in mode door motor, air mix door motors and intake door motor) In-vehicle sensor T sensor Sunload sensor Intake sensor System peration II: II0167 lower motor circuit II0168 utomatic ode In the automatic mode, the blower motor speed is calculated by the auto amp. based on the input from the R, in-vehicle sensor, sunload sensor, intake sensor and T sensor. The blower motor applied voltage ranges from approximately 4 V (lowest speed) to 12 V (highest speed). The control blower speed (in the range of 4 to 12 V), auto amp. supplies a gate voltage to the fan control amp. ased on this voltage, fan control amp. control voltage supplied to the blower motor. Starting an Speed ontrol Start up from S ondition (utomatic mode) In a cold start up condition where the engine coolant temperature is below 56 (133 ), the blower will not operate for a short period of time (up to 150 seconds). The exact start delay time varies depending on the ambient and engine coolant temperature. -43

44 WR TR TR SYST < UTI ISIS > [UTTI IR ITIR] In the most extreme case (very low ambient temperature) the blower starting delay will be 150 seconds as described above. fter this delay, the blower will operate at low speed until the engine coolant temperature rises above 56 (133 ), and then the blower speed will increase to the objective speed. Start up from usual or T S ondition (utomatic mode) The blower will begin operation momentarily after the UT switch is pressed. The blower speed will gradually rise to the objective speed over a time period of 3 seconds or less (actual time depends on the objective blower speed). lower Speed ompensation Sunload When the in-vehicle temperature and the set temperature are very close, the blower will be operating at low speed. The low speed will vary depending on the sunload. uring conditions of low or no sunload, the blower speed is low (approx. 4 V). uring high sunload conditions, the auto amp. raise the blower speed (approx. 4.5 V). an Speed ontrol Specification SII

45 T UT TR SYST < UTI ISIS > [UTTI IR ITIR] T UT TR SYST escription II: SYST SRITI uto amp. controls compressor operation by ambient temperature, intake air temperature and signal from. System peration II0120 ow Temperature rotection ontrol uto amp. will turn compressor or as determined by a signal detected by T sensor and intake sensor. When ambient temperature is higher than 2 (23 ), the compressor turns. The compressor turns when ambient temperature is lower than 5 (28 ). R094-45

46 T TR TR SYST < UTI ISIS > [UTTI IR ITIR] T TR TR SYST escription II: SYST SRITI controls T (ositive Temperature oefficient) heater correspond to fan signal, ambient temperature, engine coolant temperature, engine speed, engine status, electrical power cut freeze signal and battery voltage. sends T signal to I /R, via communication. judges whether T can be turned, based on each sensor status (ambient temperature, engine speed, engine coolant temperature, etc.). If it judges T can be turned, it send T heater relay signal to I /R via communication. System peration SII

47 R TR < T ISIS > [UTTI IR ITIR] T ISIS R TR escription T SRITI ode oor otor The mode door motor (1) are attached to the / unit assembly. It rotates so that air is discharged from the outlet set by the auto amp. otor rotation is conveyed to a link which activates the mode door. : Vehicle front II: omponent unction heck II0023ZZ II: IR SYT Y RRI T WI RTI 1. ress switches and switch. 2. ach position indicator should illuminate. 3. onfirm that discharge air comes out according to the air distribution table at below. Refer to -15, "System escription". T: onfirm that the magnet clutch is engaged (Sound or visual inspection) and intake door position is at R when or / is selected. YS >>. >> o to diagnosis procedure. Refer to -47, "iagnosis rocedure". iagnosis rocedure 1.RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to 3. oes code o. 20 appear on the display? YS >> T 2. >> Refer to -27, "iagnosis escription", see o RR S-ISIS ST-3 erform self-diagnosis ST-3. Refer to -27, "iagnosis escription", see o. 1 to 4. oes code o. 30 appear on the display? YS >> T >> ode o. 33, 34, 35 or 36 appear on the display: T >> ode o. 37, 38 or 39 appear on the display. Refer to -59, "iagnosis rocedure". -3 >> ode o. 31 or 32 appear on the display.- Refer to -50, "iagnosis rocedure". 3. WR SUY R UT. 1. Turn ignition switch. 2. heck voltage between auto amp. harness connector 53 terminal 20 and ground. II:

48 R TR < T ISIS > [UTTI IR ITIR] (+) ( ) uto amp. Voltage onnector Terminal round attery voltage YS >> T 4. >> Replace auto amp. 4. SI R UT. onfirm / signal between auto amp. harness connector 53 terminal 3 and ground using an oscilloscope. (+) ( ) uto amp. onnector Terminal Voltage 53 3 round SI1453 YS >> T 5. >> Replace auto amp. 5. WR SUY R R TR heck voltage between mode door motor harness connector 310 terminal 1 and ground. (+) ( ) ode door motor Voltage onnector Terminal round attery voltage YS >> T 6. >> Repair harness or connector. 6. SI R R TR onfirm / signal between mode door motor harness connector 310 terminal 3 and ground using an oscilloscope. -48

49 R TR < T ISIS > [UTTI IR ITIR] (+) ( ) ode door motor onnector Terminal Voltage round YS >> T 7. >> Repair harness or connector. 7. R TR RU IRUIT 1. Turn ignition switch. 2. isconnect mode door motor connector. 3. heck continuity between mode door motor harness connector 310 terminal 2 and ground. ode door motor onnector Terminal ontinuity round ontinuity should exist SI1453 YS >> Replace mode door motor. >> Repair harness or connector. 8.RR S-ISIS ST-4 erform self-diagnosis ST-4. Refer to -27, "iagnosis escription", see o. 1 to 6. Is it operated normally? YS >>. >> T R TR I heck mode door control linkage. Is it installed normally? YS >> Refer to VT-36, "xploded View". >> Repair or adjust control linkage. -49

50 I-V VTITR R TR < T ISIS > [UTTI IR ITIR] I-V VTITR R TR escription T SRITI II: igh-level Ventilator oor otor The high-level ventilator door motor (1) are attached to the / unit assembly. It rotates so that air is discharged from the outlet set by the auto amp. otor rotation is conveyed to a link which activates the high-level ventilator door. models : Vehicle front II0024ZZ R models : Vehicle front omponent unction heck 1.IR SYT Y RRI T WI RTI 1. ress high-level ventilator switch. 2. igh-level ventilator switch indicator turn. 3. onfirm that discharge air comes out high-level ventilator. YS >>. >> o to diagnosis procedure. Refer to -50, "iagnosis rocedure". iagnosis rocedure II0025ZZ II: II: RR S-ISIS ST-3 erform self-diagnosis ST-3. Refer to -27, "iagnosis escription", see o. 1 to 4. oes code o. 30 appear on the display? YS >> T >> ode o. 33, 34, 35 or 36 appear on the display. Refer to -47, "iagnosis rocedure". -2 >> ode o. 37, 38 or 39 appear on the display. Refer to -59, "iagnosis rocedure". -3 >> ode o. 31 or 32 appear on the display: T WR SUY R UT. 1. Turn ignition switch. 2. heck voltage between auto amp. harness connector 53 terminal 20 and ground. -50

51 I-V VTITR R TR < T ISIS > [UTTI IR ITIR] (+) ( ) uto amp. Voltage onnector Terminal round attery voltage YS >> T 3. >> Replace auto amp. 3. SI R UT. onfirm / signal between auto amp. harness connector 53 terminal 3 and ground using an oscilloscope. (+) ( ) uto amp. onnector Terminal Voltage 53 3 round YS >> T 4. >> Replace auto amp. 4. WR SUY R I-V VTITR R TR heck voltage between high-level ventilator door motor harness connector 44 terminal 1 and ground. (+) ( ) igh-level VT door motor Voltage onnector Terminal 44 1 round attery voltage YS >> T 5. >> Repair harness or connector. 5. SI R I-V VTITR R TR onfirm / signal between high-level ventilator door motor harness connector 44 terminal 3 and ground using an oscilloscope. SI

52 I-V VTITR R TR < T ISIS > [UTTI IR ITIR] (+) ( ) igh-level VT door motor onnector Terminal Voltage 44 3 round YS >> T 6. >> Repair harness or connector. 6. I-V VTITR R TR RU IRUIT 1. Turn ignition switch. 2. isconnect high-level ventilator door motor connector. 3. heck continuity between high-level ventilator door motor harness connector 44 terminal 2 and ground. SI1453 igh-level VT door motor onnector Terminal ontinuity 44 2 round ontinuity should exist YS >> Replace high-level ventilator door motor. >> Repair harness or connector. 7.RR S-ISIS ST-4 erform self-diagnosis ST-4. Refer to -27, "iagnosis escription", see o. 1 to 6. Is it operated normally? YS >>. >> T I-V VTITR R TR I heck high-level ventilator door control linkage. Is it installed normally? YS >> Refer to VT-38, "xploded View". >> Repair or adjust control linkage. omponent Inspection II: I-V VTITR SWIT heck continuity between high-level ventilator switch (1) 52 terminal 2 and 3. SII0303ZZ -52

53 I-V VTITR R TR < T ISIS > [UTTI IR ITIR] igh-level ventilator switch onnector Terminal onnector Terminal ondition ontinuity igh-level VT SW: igh-level VT SW: ontinuity should not exist ontinuity should exist -53

54 IR IX R TR < T ISIS > [UTTI IR ITIR] IR IX R TR escription T SRITI II: ir ix oor otor The air mix door motors (1) are attached to the / unit assembly. It rotates so that the air mix door is opened or closed to a position set by the auto amp. otor rotation is then conveyed through a shaft and the air mix door position feedback is then sent to the auto amp. by R built-in air mix door motor. : Vehicle front omponent unction heck 1.IR SYT Y RRI T WI RTI 1. Turn temperature control dial (driver side) clockwise until 30.0 is displayed. 2. heck for hot air at discharge air outlets. 3. Turn temperature control dial (driver side) counterclockwise until 16.0 is displayed. 4. heck for cold air at discharge air outlets. YS >>. >> o to diagnosis procedure. Refer to -54, "iagnosis rocedure" iagnosis rocedure II0026ZZ II: II: RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to 3. oes code o. 20 appear on the display? YS >> T 2. >> o to appropriate malfunctioning sensor circuit. Refer to -27, "iagnosis escription", see o RR S-ISIS ST-4 erform self-diagnosis ST-4. Refer to -27, "iagnosis escription", see o.1 to 6. Is it operated normally? YS >>. -54

55 IR IX R TR < T ISIS > [UTTI IR ITIR] -1 >> alfunction is detected on left side. T >> alfunction is detected on right side. T IR IX R TR (T SI) heck air mix door motor (left side). Refer to VT-40, "xploded View". Is it installed normally? YS >> T 4. >> Replace air mix door motor (left side). 4. WR SUY R UT. 1. Turn ignition switch. 2. heck voltage between auto amp. harness connector 53 terminal 20 and ground. (+) ( ) uto amp. Voltage onnector Terminal round attery voltage YS >> T 5. >> Replace auto amp. 5. SI R UT. onfirm / signal between auto amp. harness connector 53 terminal 3 and ground using an oscilloscope. (+) ( ) uto amp. onnector Terminal Voltage 53 3 round YS >> T 6. >> Replace auto amp. 6. WR SUY R IR IX R TR (T SI) heck voltage between air mix door motor (left side) harness connector 306 terminal 1 and ground. (+) ( ) ir mix door motor (left side) Voltage onnector Terminal round attery voltage YS >> T 7. >> Repair harness or connector. 7. SI R IR IX R TR (T SI) onfirm / signal between air mix door motor (left side) harness connector 306 terminal 3 and ground using an oscilloscope. SI

56 IR IX R TR < T ISIS > [UTTI IR ITIR] (+) ( ) ir mix door motor (left side) onnector Terminal Voltage round YS >> T 8. >> Repair harness or connector. 8. IR IX R TR (T SI) RU IRUIT 1. Turn ignition switch. 2. isconnect air mix door motor (left side) connector. 3. heck continuity between air mix door motor (left side) harness connector 306 terminal 2 and ground. SI1453 ir mix door motor (left side) onnector Terminal ontinuity round ontinuity should exist YS >> Replace air mix door motor (left side). >> Repair harness or connector. 9. IR IX R TR (RIT SI) heck air mix door motor (right side). Refer to VT-40, "xploded View". Is it installed normally? YS >> T 10. >> Replace air mix door motor (right side). 10. WR SUY R UT. 1. Turn ignition switch. 2. heck voltage between auto amp. harness connector 53 terminal 20 and ground. (+) ( ) uto amp. Voltage onnector Terminal round attery voltage YS >> T 11. >> Replace auto amp. 11. SI R UT. onfirm / signal between auto amp. harness connector 53 terminal 3 and ground using an oscilloscope. -56

57 IR IX R TR < T ISIS > [UTTI IR ITIR] (+) ( ) uto amp. onnector Terminal Voltage 53 3 round YS >> T 12. >> Replace auto amp. 12. WR SUY R IR IX R TR (RIT SI) heck voltage between air mix door motor (right side) harness connector 307 terminal 1 and ground. SI1453 (+) ( ) ir mix door motor (right side) Voltage onnector Terminal round attery voltage YS >> T 13. >> Repair harness or connector. 13. SI R IR IX R TR (RIT SI) onfirm / signal between air mix door motor (right side) harness connector 307 terminal 3 and ground using an oscilloscope. (+) ( ) ir mix door motor (right side) onnector Terminal Voltage round YS >> T 14. >> Repair harness or connector. 14. IR IX R TR (RIT SI) RU IRUIT 1. Turn ignition switch. 2. isconnect air mix door motor (right side) connector. 3. heck continuity between air mix door motor (right side) harness connector 307 terminal 2 and ground. SI1453 ir mix door motor (right side) onnector Terminal ontinuity round ontinuity should exist -57

58 IR IX R TR < T ISIS > [UTTI IR ITIR] YS >> Replace air mix door motor (right side). >> Repair harness or connector. -58

59 IT R TR < T ISIS > [UTTI IR ITIR] IT R TR escription T SRITI Intake oor otor The intake door motor (1) is attached to the / unit. It rotates so that air is drawn from inlets set by the auto amp. otor rotation is conveyed to a lever which activates the intake door. : Vehicle front II: omponent unction heck 1.IR SYT Y RRI T WI RTI 1. ress recirculation (R) switch. 2. R indicator should illuminate. 3. isten for intake door position change. (Slight change of blower sound can be heard.) 4. ress fresh (R) switch. 5. R indicator should illuminate. YS >>. >> o to diagnosis procedure. Refer to -59, "iagnosis rocedure". iagnosis rocedure II0027ZZ II: II: RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to 3. oes code o. 20 appear on the display? YS >> T 2. >> o to appropriate malfunctioning sensor circuit. Refer to -27, "iagnosis escription", see o RR S-ISIS ST-4 erform self-diagnosis ST-4. Refer to -27, "iagnosis escription", see o. 1 to 6. Is it operated normally? YS >>. >> T IT R TR I heck intake door control linkage. Is it installed normally? YS >> T 4. >> Repair or adjust control linkage. 4. WR SUY R UT. 1. Turn ignition switch. 2. heck voltage between auto amp. harness connector 53 terminal 20 and ground. -59

60 IT R TR < T ISIS > [UTTI IR ITIR] (+) ( ) uto amp. Voltage onnector Terminal round attery voltage YS >> T 5. >> Replace auto amp. 5. SI R UT. onfirm / signal between auto amp. harness connector 53 terminal 3 and ground using an oscilloscope. (+) ( ) uto amp. onnector Terminal Voltage 53 3 round SI1453 YS >> T 6. >> Replace auto amp. 6. WR SUY R IT R TR heck voltage between intake door motor harness connector 304 terminal 1 and ground. (+) ( ) Intake door motor Voltage onnector Terminal round attery voltage YS >> T 7. >> Repair harness or connector. 7. SI R IT R TR onfirm / signal between intake door motor harness connector 304 terminal 3 and ground using an oscilloscope. -60

61 IT R TR < T ISIS > [UTTI IR ITIR] (+) ( ) Intake door motor onnector Terminal Voltage round YS >> T 8. >> Repair harness or connector. 8. IT R TR RU IRUIT 1. Turn ignition switch. 2. isconnect intake door motor connector. 3. heck continuity between intake door motor harness connector 304 terminal 2 and ground. Intake door motor onnector Terminal ontinuity round ontinuity should exist YS >> Replace intake door motor. >> Repair harness or connector. SI

62 WR TR < T ISIS > [UTTI IR ITIR] WR TR escription T SRITI The blower motor (1) utilizes a brush motor with a sirocco fan type. II: : Vehicle front omponent unction heck II0028ZZ II: IR SYT Y RRI T WI RTI 1. Turn fan control dial clockwise. lower should operate on low speed. 2. Turn fan control dial clockwise, and continue checking blower speed and fan s until all speeds checked. YS >>. >> o to diagnosis procedure. Refer to -62, "iagnosis rocedure". iagnosis rocedure II: RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to 3. Is there any malfunction displayed? YS >> o to appropriate malfunctioning sensor circuit. Refer to -27, "iagnosis escription", see to o. 11. >> T 2. 2.RR S-ISIS ST-4 erform self-diagnosis ST-4. Refer to -27, "iagnosis escription", see o. 1 to 6. ode o lower motor voltage 5 V V 8.5 V V oes blower motor speed change according to each code o.? YS >> T 3. >> T I T TRTUR heck engine coolant temperature. Is engine coolant temperature below 56 (133 )? YS >> T 4. >> lower motor operation is normal. 4. WR TR RTI heck blower motor operating. Is blower motor operation under starting blower speed control? YS >>. >> T

63 WR TR < T ISIS > [UTTI IR ITIR] 5. WR SUY R WR TR 1. isconnect blower motor connector. 2. Turn ignition switch. 3. heck voltage between blower motor harness connector 312 terminal 1 and ground. (+) ( ) lower motor Voltage onnector Terminal round attery voltage YS >> T 6. >> T WR SUY R TR. 1. isconnect fan control amp. connector. 2. heck voltage between fan control amp. harness connector 311 terminal 1 and ground. (+) ( ) an control amp. Voltage onnector Terminal round attery voltage YS >> T 7. >> T WR TR TR SI 1. Reconnect blower motor connector and fan control amp. connector. 2. Turn ignition switch. 3. ress VT switch. 4. Turn fan control dial to 1st speed. 5. heck voltage between fan control amp. harness connector 311 terminal 2 and ground. (+) ( ) an control amp. Voltage onnector Terminal round pprox. 2.5 YS >> T >> In the case of less than approx. 2.5 V: T >> In the case of more than approx. 9 V: Replace auto amp. 8. TR. RU IRUIT 1. isconnect fan control amp. connector. 2. heck continuity between fan control amp. harness connector 311 terminal 3 and ground. an control amp. onnector Terminal ontinuity round ontinuity should exist YS >> T 9. >> Repair harness or connector. -63

64 WR TR < T ISIS > [UTTI IR ITIR] 9. WR TR SI 1. Reconnect fan control amp. connector. 2. Turn ignition switch. 3. Turn fan control dial to 1st speed. 4. heck voltage between auto amp. harness connector 53 terminal 18 and ground. (+) ( ) uto amp. Voltage onnector Terminal round attery voltage YS >> Replace auto amp. >> Repair harness or connector. 10. WR VT WR RY 1. Turn ignition switch. 2. Remove blower relay. Refer to -113, "use, onnector and Terminal rrangement". 3. Turn ignition switch. 4. heck voltage between blower relay fuse block terminals 1, 3 and body ground. Refer to -111, "escription" for relay terminal assignment. (+) ( ) lower relay 1 round 3 Voltage attery voltage YS >> T 12. >> T IITI SWIT IRUIT heck ignition switch circuit. Refer to -91, "iagnosis rocedure" (WIT I-Y, WITUT SUR ), -354, "iagnosis rocedure" (WIT I-Y & SUR ), -596, "iagnosis rocedure" (WITUT I-Y, WITUT SUR ) or -757, "iagnosis rocedure" (WITUT I-Y & SUR ). YS >> Repair harness or connector. >> Replace malfunctioning parts. 12. WR RY 1. Turn ignition switch. 2. Install blower relay. Refer to -113, "use, onnector and Terminal rrangement". 3. heck operation sound of the blower relay after switching ignition switch. YS >> T 13. >> Replace blower relay. 13. US heck 15 fuses [os 15 and 16, located in the fuse block (/)]. Refer to -113, "use, onnector and Terminal rrangement". YS >> Repair harness or connector. >> Replace fuse. 14. IRUIT TIUITY TW WR TR TR. -64

65 WR TR < T ISIS > [UTTI IR ITIR] 1. Turn ignition switch. 2. isconnect fan control amp. connector. 3. heck continuity between blower motor harness connector 312 terminal 2 and fan control amp. harness connector 311 terminal 1. lower motor an control amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> Replace blower motor. >> Repair harness or connector. 15. IRUIT TR. heck continuity between fan control amp. harness connector 311 terminal 3 and 2. an control amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> Replace auto amp. >> Replace fan control amp. omponent Inspection onfirm smooth rotation of the blower motor (1). : Vehicle front II: II0028ZZ -65

66 T UT < T ISIS > [UTTI IR ITIR] T UT escription II: agnet clutch drives a compressor, by a signal of I /R. omponent unction heck II: IR SYT Y RRI T WI RTI 1. ress UT switch and / switch. 2. UT switch indicator will turn. onfirm that the magnet clutch engages (sound or visual inspection). (ischarge air and blower speed will depend on ambient, in-vehicle and set temperatures.) oes the magnet clutch operate? YS >>. >> o to iagnosis rocedure. Refer to -66, "iagnosis rocedure". iagnosis rocedure -66 II: RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to 3. Is there any malfunction displayed? YS >> o to appropriate malfunctioning sensor circuit. Refer to -27, "iagnosis escription", see to o. 11. >> T 2. 2.RR S-ISIS ST-4 erform self-diagnosis ST-4. Refer to -27, "iagnosis escription", see o. 1 to 6. Is it operated normally? YS >>. >> T 3. 3.RR UT TIV TST erform UT TIV TST. Refer to S-9, "iagnosis escription". oes the magnet clutch operate? YS >> WIT SUT-III: T 7. WITUT SUT-III: T 8. >> heck 10 fuse (o. 53, located in I /R), and T IRUIT TIUITY TW I /R RSSR 1. Turn ignition switch. 2. isconnect I /R connector and compressor connector. 3. heck continuity between I /R harness connector 12 terminal 23 and compressor harness connector 17 (With asoline ngine) or 18 (With iesel ngine) terminal 1. With asoline ngine I /R ompressor ontinuity onnector Terminal onnector Terminal ontinuity should exist With iesel ngine I /R ompressor ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 5. >> Repair harness or connector.

67 T UT < T ISIS > [UTTI IR ITIR] 5. IRUIT TIUITY TW RSSR RU heck continuity between compressor harness connector 17 (With asoline ngine) or 18 (With iesel ngine) terminal 2 and ground. With asoline ngine ompressor onnector Terminal ontinuity 17 2 round ontinuity should exist With iesel ngine ompressor onnector Terminal ontinuity 18 2 round ontinuity should exist YS >> T 6. >> Repair harness or connector. 6. T UT IRUIT heck for operation sound when applying battery voltage direct current to terminal. YS >> 1. Replace I /R. 2. Refer to self-diagnosis procedure -27, "iagnosis escription" and perform self-diagnosis ST-4. onfirm that magnet clutch operation normal. >> 1. Replace compressor. 2. Refer to self-diagnosis procedure -27, "iagnosis escription" and perform self-diagnosis ST-4. onfirm that magnet clutch operation normal. 7. IUT (RSSR ) SI heck compressor / signal in T ITR. Refer to -31, "SUT-III unction". / SW / SW : IR SW : IR SW YS >> T 11. >> T IRUIT TIUITY TW UT. 1. Turn ignition switch. 2. isconnect harness connector and auto amp. harness connector. 3. heck continuity between harness connector 65 terminal 14 and auto amp. harness connector 53 terminal 5. uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 9. >> Repair harness or connector onnect harness connector. 2. Turn ignition switch. 3. heck voltage between harness connector 65 terminal 14 and ground. -67

68 T UT < T ISIS > [UTTI IR ITIR] onnector Terminal Voltage round attery voltage YS >> T 10. >> Replace. Refer to S-65, "xploded View". 10. RSSR SI 1. Turn ignition switch. 2. onnect auto amp. harness connector. 3. Turn ignition switch. 4. heck voltage between auto amp. harness connector 53 terminal 5 and ground. onnector YS >> T 11. >> Replace auto amp. 11. RRIRT RSSUR SSR WIT SUT-III 1. Start the engine. 2. heck voltage of refrigerant pressure sensor in T ITR. Refer to -91, "R16 : Reference Value" (R16), -92, "R20 : Reference Value" (R20), -92, "9 : Reference Value" (9) or -93, "9R : Reference Value" (9R). WITUT SUT-III 1. Start the engine. 2. heck voltage between harness connector 8 terminal 41 (With asoline ngine), 68 terminal 78 (With 9 ngine) or 131 terminal 31 and ground (With 9R ngine). With asoline ngine With 9 ngine (+) ( ) uto amp. Terminal 53 5 round onnector (+) ( ) Terminal 8 41 round ondition / switch: (lower motor operates.) ondition / switch: (lower motor operates.) Voltage pprox. 0 Voltage pprox (+) ( ) onnector Terminal round With 9R ngine (+) ( ) onnector Terminal round ondition / switch: (lower motor operates.) ondition / switch: (lower motor operates.) Voltage pprox. 2.3 Voltage pprox

69 T UT < T ISIS > [UTTI IR ITIR] YS >> WIT SUT-III: T 12. WITUT SUT-III: T 13. >> Refer to -305, "iagnosis rocedure" [R16 (WIT UR-)], -585, "iagnosis rocedure" [R16 (WITUT UR-)], -308, "iagnosis rocedure" [R20 (WIT UR-)], -587, "iagnosis rocedure" [R20 (WITUT UR-)], -135, "iagnosis rocedure" (9) or R-185, "iagnosis rocedure" (9R). 12. IUT ( ) SI heck / signal in T ITR. Refer to -31, "SUT-III unction". TR I TR I : SI : SI YS >> T 16. >> T IRUIT TIUITY TW UT. 1. Turn ignition switch. 2. isconnect connector and auto amp. connector. 3. heck continuity between harness connector 65 terminal 15 and auto amp. harness connector 53 terminal 24. uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 14. >> Repair harness or connector onnect harness connector. 2. Turn ignition switch. 3. heck voltage between harness connector 65 terminal 15 and ground. onnector Terminal Voltage round attery voltage YS >> T 15. >> Replace. Refer to S-65, "xploded View". 15. SI 1. Turn ignition switch. 2. onnect auto amp. connector. 3. Turn ignition switch. 4. heck voltage between auto amp. harness connector 53 terminal 24 and ground. (+) ( ) uto amp. ondition Voltage onnector Terminal round an control dial: pprox. 0 YS >> T

70 T UT < T ISIS > [UTTI IR ITIR] >> Replace auto amp. 16. UITI heck communication. Refer to -28, " ommunication Signal hart". I /R YS >> Replace. >> Repair or replace malfunctioning part(s). omponent Inspection Refrigerant ressure Sensor The refrigerant pressure sensor (1) is attached to the liquid tank. ake sure that the / refrigerant pressure and the sensor output voltage are within the specified range as shown in the / operating condition figure. Refer to -305, "escription" [R16 (WIT UR-)], -585, "escription" [R16 (WITUT UR- )], -308, "escription" [R20 (WIT UR-)], -587, "escription" [R20 (WITUT UR-)], - 135, "escription" (9) or R-185, "escription" (9R). II: II0090ZZ SI

71 T TR < T ISIS > [UTTI IR ITIR] T TR escription II: I /R operate a T heater, by a signal of. omponent unction heck 1.IR SYT Y RRI T WI RTI II: SUT-III TIV TST 1. Start engine. 2. Select T TR of active test item. UTI: ngine must be cold. attery must be charged. 3. Turn fan control dial clockwise. 4. Turn temperature control dial to full hot position. 5. With operating the test item, check that T heater operation. 6. heck for warm air at discharge air outlet. T 3 T 2 T 1 oes the T heater operate? YS >>. >> o to iagnosis rocedure. Refer to -71, "iagnosis rocedure". iagnosis rocedure 1. T TR-1 RTI : T 3 is indicated, but cannot be tested. : T heater I operation : T heater operation : Stop the T heater operation II: SUT -III TIV TST 1. isconnect T heater connector. 2. Start engine. 3. Select T TR of active test item. 4. With operating the item, check voltage between T heater harness connector 117 terminal 3 and ground. onnector (+) ( ) Test item T heater Terminal round T TR In the inspection result normal? YS >> T 2. >> T RU IRUIT R T TR-1 1. Turn ignition switch. 2. heck continuity between T heater harness connector 116 terminal 1 and ground. Voltage pprox. 0 T 1 attery voltage T 2 pprox. 0-71

72 T TR < T ISIS > [UTTI IR ITIR] T heater onnector Terminal ontinuity round ontinuity should exist. YS >> T 3. >> Repair harness or connector. 3. T TR-2 RTI 1. Start engine. 2. Select T TR of active test item. 3. With operating the item, check voltage between T heater harness connector 117 terminal 4 and ground. onnector (+) ( ) Test item T heater Terminal round T TR YS >> T 4. >> T RU IRUIT R T TR-2 1. Turn ignition switch. 2. heck continuity between T heater harness connector 116 terminal 2 and ground. Voltage pprox. 0 T 1 pprox. 0 T 2 attery voltage T heater onnector Terminal ontinuity round ontinuity should exist YS >> Replace T heater. >> Repair harness or connector. 5. VT R T RY-1 1. Turn ignition switch. 2. isconnect T relay Turn ignition switch. 4. heck voltage between T relay-1 harness connector 53 terminal 3 and ground. (+) ( ) T relay-1 Voltage onnector Terminal 53 3 round attery voltage YS >> T 7. >> T US heck 30 fuse (o. 37, located in the fuse, fusible link and relay box). Refer to -114, "use and usible ink rrangement". -72

73 T TR < T ISIS > [UTTI IR ITIR] YS >> Repair harness or connector. >> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 7. T RY-1 heck T relay-1. Refer to -76, "omponent Inspection". YS >> T 8. >> Replace T relay IRUIT TIUITY TW T RY-1 T TR heck continuity between T relay-1 harness connector 53 terminal 5 and T heater harness connector 117 terminal 3. T relay-1 T heater ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 9. >> Repair harness or connector. 9. WR SUY R T RY-1 1. Turn ignition switch. 2. heck voltage between T relay-1 harness connector 53 terminal 1 and ground. (+) ( ) T relay-1 Voltage onnector Terminal 53 1 round attery voltage YS >> T 11. >> T US heck 10 fuse [o. 17, located in the fuse block (/)]. Refer to -113, "use, onnector and Terminal rrangement". YS >> Repair harness or connector. >> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 11. IRUIT TIUIT TW T RY-1 I /R heck continuity between T relay-1 harness connector 53 terminal 2 and I /R harness connector 11 terminal 11. T relay-1 I /R ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 18. >> Repair harness or connector. 12. VT R T RY-2 1. Turn ignition switch. 2. isconnect T relay

74 T TR < T ISIS > [UTTI IR ITIR] 3. Turn ignition switch. 4. heck voltage between T relay-2 harness connector 54 terminal 3 and ground. (+) ( ) T relay-2 Voltage onnector Terminal 54 3 round attery voltage YS >> T 14. >> T US heck 30 fuse (o. 35, located in the fuse, fusible link and relay box). Refer to -114, "use and usible ink rrangement". YS >> Repair harness or connector. >> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 14. T RY-2 heck T relay-2. Refer to -76, "omponent Inspection". YS >> T 15. >> Replace T relay IRUIT TIUIT TW T RY-2 T TR heck continuity between T relay-2 harness connector 54 terminal 5 and T heater harness connector 117 terminal 4. T relay-2 T heater ontinuity onnector Terminal onnector Terminal ontinuity should exist. YS >> T 16. >> Repair harness or connector. 16. WR SUY R T RY-2 1. Turn ignition switch. 2. heck voltage between T relay-2 harness connector 54 terminal 1 and ground. (+) ( ) T relay-2 Voltage onnector Terminal 54 1 round attery voltage YS >> T 17. >> T IRUIT TIUIT TW T RY-2 I /R heck continuity between T relay-2 harness connector 54 terminal 2 and I /R harness connector 11 terminal

75 T TR < T ISIS > [UTTI IR ITIR] T relay-1 I /R ontinuity onnector Terminal onnector Terminal ontinuity should exist. YS >> T 18. >> Repair harness or connector. 18. IUT ( ) SI heck / signal in T ITR. Refer to -31, "SUT-III unction". TR I TR I : SI : SI YS >> T 21. >> T SI 1. Turn ignition switch. 2. heck voltage between auto amp. harness connector 53 terminal 24 and ground. (+) ( ) uto amp. ondition Voltage onnector Terminal round an control dial: pprox Turn fan control dial clockwise. 4. heck voltage between auto amp. harness connector 53 terminal 24 and ground. onnector (+) ( ) uto amp. Terminal round ondition YS >> T 20. >> Replace auto amp. 20. IRUIT TIUITY TW UT. 1. Turn ignition switch. 2. isconnect harness connector. 3. heck continuity between harness connector 65 terminal 15 and auto amp. harness connector 53 terminal 24. YS >> T 21. >> Repair harness or connector. 21. UITI heck communication. Refer to -28, " ommunication Signal hart". an control dial: (lower motor operates.) uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist Voltage pprox. 0-75

76 T TR < T ISIS > [UTTI IR ITIR] I /R YS >> Replace I /R. >> Repair or replace malfunctioning part(s). omponent Inspection T TR The T heater (1) is attached to the / unit assembly. It generates heat electrically. II: T RY heck continuity between terminal 3 and 5. II0033ZZ Terminal ondition ontinuity 12V direct current supply between terminal 1 and 2 xist 3 and 5 o current supply ot exist I

77 T SSR < T ISIS > [UTTI IR ITIR] T SSR escription T SRITI T (utside ir Temperature) Sensor The T sensor (1) is attached on the radiator core support. It detects ambient temperature and converts it into a resistance value which is then input into the auto amp. II: T Sensor ircuit II0091ZZ II0125 IT TRTUR IUT RSS The auto amp. includes a processing circuit for the T sensor input. owever, when the temperature detected by the T sensor increases quickly, the processing circuit retards the auto amp. function. It only allows the auto amp. to recognize an ambient temperature increase of 0.33 (0.6 ) per 100 seconds. s an example, consider stopping for a few minutes after high speed driving. lthough the actual ambient temperature has not changed, the temperature detected by the T sensor will increase. This is because the heat from the engine compartment can radiate to the front bumper area, location of the T sensor. omponent unction heck II: RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to or 21 is displayed. YS >> o to iagnosis rocedure. Refer to -77, "iagnosis rocedure". >>. iagnosis rocedure 1. VT TW T SSR RU 1. isconnect T sensor connector. 2. Turn ignition switch. 3. heck voltage between T sensor harness connector 52 terminal 4 and ground. II:

78 T SSR < T ISIS > [UTTI IR ITIR] (+) ( ) T sensor Voltage onnector Terminal 52 4 round pprox. 5 YS >> T 2. >> T IRUIT TIUITY TW T SSR UT. 1. Turn ignition switch. 2. isconnect auto amp. connector. 3. heck continuity between T sensor harness connector 52 terminal 3 and auto amp. harness connector 53 terminal 26. T sensor uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 3. >> Repair harness or connector. 3. T SSR Refer to -79, "omponent Inspection". YS >> Replace auto amp. >> Replace T sensor. 4. IRUIT TIUITY TW T SSR UT. 1. Turn ignition switch. 2. isconnect auto amp. connector. 3. heck continuity between T sensor harness connector 52 terminal 4 and auto amp. harness connector 53 terminal 28. T sensor uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist 4. heck continuity between T sensor harness connector 52 terminal 4 and ground. T sensor onnector Terminal ontinuity 52 4 round ontinuity should not exist YS >> Replace auto amp. >> Repair harness or connector. -78

79 T SSR < T ISIS > [UTTI IR ITIR] omponent Inspection fter disconnecting T sensor (1) connector 52, measure resistance between terminals 3 and 4 at sensor side. Refer to table below. Temperature ( ) Resistance kω 30 ( 22) ( 4) (14) (32) (41) (50) (68) (86) (104) 0.36 If, replace T sensor. II: II0092ZZ -79

80 I-VI SSR < T ISIS > [UTTI IR ITIR] I-VI SSR escription In-vehicle Sensor The in-vehicle sensor (1) is located on lower instrument panel, driver side. It converts variations in temperature of compartment air drawn from the aspirator into a resistance value. It is then input into the auto amp. II: II0093ZZ In-vehicle Sensor ircuit II0095 spirator The aspirator (1) is located on driver s side of / unit assembly. It produces vacuum pressure due to air discharged from the / unit assembly, continuously taking compartment air in the aspirator. : Vehicle front II0029ZZ omponent unction heck II0094 II: RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to

81 I-VI SSR < T ISIS > [UTTI IR ITIR] 22 or 22 is displayed. YS >> o to iagnosis rocedure. Refer to -81, "iagnosis rocedure". >>. iagnosis rocedure 1. VT TW I-VI SSR RU 1. isconnect in-vehicle sensor connector. 2. Turn ignition switch. 3. heck voltage between in-vehicle sensor harness connector 41 terminal 1 and ground. (+) ( ) In-vehicle sensor Voltage onnector Terminal 41 1 round pprox. 5 II: YS >> T 2. >> T IRUIT TIUITY TW I-VI SSR UT. 1. Turn ignition switch. 2. isconnect auto amp. connector. 3. heck continuity between in-vehicle sensor harness connector 41 terminal 2 and auto amp. harness connector 53 terminal 26. In-vehicle sensor uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 3. >> Repair harness or connector. 3. I-VI SSR Refer to -82, "omponent Inspection". YS >> Replace auto amp. >> Replace in-vehicle sensor. 4. IRUIT TIUITY TW I-VI SSR UT. 1. Turn ignition switch. 2. isconnect auto amp. connector. 3. heck continuity between in-vehicle sensor harness connector 41 terminal 1 and auto amp. harness connector 53 terminal 27. In-vehicle sensor uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist 4. heck continuity between in-vehicle sensor harness connector 41 terminal 1 and ground. In-vehicle sensor onnector Terminal ontinuity 41 1 round ontinuity should not exist -81

82 I-VI SSR < T ISIS > [UTTI IR ITIR] YS >> Replace auto amp. >> Repair harness or connector. omponent Inspection fter disconnecting in-vehicle sensor (1) connector 41, measure resistance between terminals 1 and 2 at sensor side. Refer to table below. II: Temperature ( ) Resistance kω 15 (5) (14) (23) (32) (41) (50) (59) (68) (77) (86) (95) (104) (113) 1.07 If, replace in-vehicle sensor. II0096ZZ -82

83 SU SSR < T ISIS > [UTTI IR ITIR] SU SSR escription T SRITI Sunload Sensor The sunload sensor (1) is located on the tweeter grille (R). It detects sunload entering through windshield by means of a photo diode. The sensor converts the sunload into a current value which is then input into the auto amp. II: Sunload Sensor ircuit II0097ZZ II0098 SU IUT RSS The auto amp. also includes a processing circuit which averages the variations in detected sunload over a period of time. This prevents drastic swings in the system operation due to small or quick variations in detected sunload. or example, consider driving along a road bordered by an occasional group of large trees. The sunload detected by the sunload sensor will vary whenever the trees obstruct the sunlight. The processing circuit averages the detected sunload over a period of time, so that the (insignificant) effect of the trees momentarily obstructing the sunlight does not cause any change in the system operation. n the other hand, shortly after entering a long tunnel, the system will recognize the change in sunload, and the system will react accordingly. omponent unction heck II: RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to or 25 is displayed. YS >> o to iagnosis rocedure. Refer to -83, "iagnosis rocedure". >>. iagnosis rocedure 1. VT TW SU SSR RU 1. isconnect sunload sensor connector. 2. Turn ignition switch. 3. heck voltage between sunload sensor harness connector 74 terminal 1 and ground. II:

84 SU SSR < T ISIS > [UTTI IR ITIR] (+) ( ) Sunload sensor Voltage onnector Terminal 74 1 round pprox. 5 YS >> T 2. >> T IRUIT TIUITY TW SU SSR UT. 1. Turn ignition switch. 2. isconnect auto amp. connector. 3. heck continuity between sunload sensor harness connector 74 terminal 2 and auto amp. harness connector 53 terminal 26. Sunload sensor uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 3. >> Repair harness or connector. 3. SU SSR 1. Reconnect sunload sensor connector and auto amp. connector. 2. Refer to -85, "omponent Inspection". YS >> Replace auto amp. >> Replace sunload sensor. 4. IRUIT TIUITY TW SU SSR UT. 1. Turn ignition switch. 2. isconnect auto amp. connector. 3. heck continuity between sunload sensor harness connector 74 terminal 1 and auto amp. harness connector 53 terminal 7. Sunload sensor uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist 4. heck continuity between sunload sensor harness connector 74 terminal 1 and ground. Sunload sensor onnector Terminal ontinuity 74 1 round ontinuity should not exist YS >> Replace auto amp. >> Repair harness or connector. -84

85 SU SSR < T ISIS > [UTTI IR ITIR] omponent Inspection easure voltage between auto amp. harness connector (2) 53 terminal 7 and ground. 1. Sunload sensor II: II0099ZZ When checking sunload sensor, select a place where sunshine directly on it. If, replace sunload sensor. S930-85

86 IT SSR < T ISIS > [UTTI IR ITIR] IT SSR escription Intake Sensor The intake sensor (1) is located on the / unit assembly. It converts temperature of air after it passes through the evaporator (2) into a resistance value which is then input to the auto amp. II: II0030ZZ Intake Sensor ircuit omponent unction heck 1.RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to or 24 is displayed. YS >> o to iagnosis rocedure. Refer to -86, "iagnosis rocedure". >>. iagnosis rocedure II0051 II: II: VT TW IT SSR RU 1. isconnect intake sensor connector. 2. Turn ignition switch. 3. heck voltage between intake sensor harness connector 42 terminal 1 and ground. (+) ( ) Intake sensor Voltage onnector Terminal 42 1 round pprox. 5 YS >> T 2. >> T IRUIT TIUITY TW IT SSR UT. 1. Turn ignition switch. 2. isconnect auto amp. connector. -86

87 IT SSR < T ISIS > [UTTI IR ITIR] 3. heck continuity between intake sensor harness connector 42 terminal 2 and auto amp. harness connector 53 terminal 26. Intake sensor uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 3. >> Repair harness or connector. 3. IT SSR Refer to -88, "omponent Inspection". YS >> Replace auto amp. >> Replace intake sensor. 4. IRUIT TIUITY TW IT SSR UT. 1. Turn ignition switch. 2. isconnect auto amp. connector. 3. heck continuity between intake sensor harness connector 42 terminal 1 and auto amp. harness connector 53 terminal 25. Intake sensor uto amp. ontinuity onnector Terminal onnector Terminal ontinuity should exist 4. heck continuity between intake sensor harness connector 42 terminal 1 and ground. Intake sensor onnector Terminal ontinuity 42 1 round ontinuity should not exist YS >> Replace auto amp. >> Repair harness or connector. -87

88 IT SSR < T ISIS > [UTTI IR ITIR] omponent Inspection II: fter disconnecting intake sensor (1) connector 42, measure resistance between terminals 1 and 2 at sensor side. Refer to table below. Temperature ( ) Resistance kω 15 (5) (14) (23) (32) (41) (50) (59) (68) (77) (86) (95) (104) (113) 1.04 If, replace intake sensor. II0101ZZ -88

89 WR SUY RU IRUIT R UT. < T ISIS > [UTTI IR ITIR] WR SUY RU IRUIT R UT. escription T SRITI uto mp. (utomatic mplifier) The auto amp. (1) has a built-in microcomputer which processes information sent from various sensors needed for air conditioner operation. The air mix door motors, mode door motor, intake door motor, blower motor and compressor are then controlled. The auto amp. is unitized with control mechanisms. Signal from various switches and potentio temperature control (T) are directly entered into auto amp. Self-diagnosis functions are also built into auto amp. to provide quick check of malfunctions in the auto air conditioner system. II: ower Supply and round ircuit for uto mp. II0031ZZ II0123 otentio Temperature ontrol (T) The T (1) is built into the auto amp. It can be set at an interval of 0.5 in the 16.0 to 30.0 temperature range by turning temperature control dial. The set temperature is displayed. omponent unction heck II: IR SYT Y RRI T WI RTI 1. ress UT switch and / switch. 2. UT switch indicator will turn. onfirm that the magnet clutch engages (sound or visual inspection). (ischarge air and blower speed will depend on ambient, in-vehicle and set temperatures.) oes magnet clutch engaged? YS >>. >> o to iagnosis rocedure. Refer to -89, "iagnosis rocedure". iagnosis rocedure II0113ZZ II: WR SUY IRUIT R UT. 1. isconnect auto amp. connector. -89

90 WR SUY RU IRUIT R UT. < T ISIS > [UTTI IR ITIR] 2. heck voltage between auto amp. harness connector 53 terminals 18, 39 and 40 and ground. (+) (-) Ignition switch position uto amp. onnector Terminal pprox. 0 V pprox. 0 V attery voltage 39 round attery voltage attery voltage attery voltage 40 pprox. 0 V pprox. 0 V attery voltage YS >> T 3. >> T US heck 10 fuses [os. 4, 8 and 17, located in the fuse block (/)]. Refer to -113, "use, onnector and Terminal rrangement". YS >> heck harness for open circuit. Repair or replace if necessary. >> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 3. RU IRUIT R UT. 1. Turn ignition switch. 2. heck continuity between auto amp. harness connector 53 terminal 17 and ground. uto amp. onnector Terminal ontinuity round ontinuity should exist YS >> Replace auto amp. >> Repair harness or connector. -90

91 < U ISIS > [UTTI IR ITIR] U ISIS R16 R16 : Reference Value II: VUS T ISIS T Remarks: Specification data are reference values. Specification data are output/input values which are detected or supplied by the at the connector. *Specification data may not be directly related to their components signals/values/operations. I.e. djust ignition timing with a timing light before monitoring I TII, because the monitor may show the specification data in spite of the ignition timing not being adjusted to the specification data. this I TII monitors the data calculated by the according to the signals input from the camshaft position sensor and other ignition timing related sensors. onitor Item ondition Values/Status RSS S TRI YUT ngine: Idle oth / switch and blower fan switch: (ompressor operates) V YSI VUS T: is located in the engine room left side near battery. Specification data are reference values and are measured between each terminal and ground. ulse signal is measured by SUT-III. UTI: o not use ground terminals when measuring input/output voltage. oing so may result in damage to the s transistor. Use a ground other than terminals, such as the ground. Terminal o. escription Wire + - color Signal name R20 Input/ utput 41 round / Refrigerant pressure sensor Input 48 round R/ 74 round Y/W Sensor ground (Refrigerant pressure sensor) Sensor power supply (Refrigerant pressure sensor) ondition [ngine is running] Warm-up condition oth / switch and blower fan motor switch: (ompressor operates) [ngine is running] Warm-up condition Idle speed V 0 V [Ignition switch: ] 5 V I9221 Value (pprox.) -91

92 < U ISIS > [UTTI IR ITIR] R20 : Reference Value II: VUS T ISIS T Remarks: l Specification data are reference values. l Specification data are output/input values which are detected or supplied by the at the connector. * Specification data may not be directly related to their components signals/values/operations. I.e. djust ignition timing with a timing light before monitoring I TII, because the monitor may show the specification data in spite of the ignition timing not being adjusted to the specification data. this I TII monitors the data calculated by the according to the signals input from the camshaft position sensor and other ignition timing related sensors. onitor Item ondition Values/Status RSS S TRI YUT ngine: Idle oth / switch and blower fan switch: (ompressor operates) V YSI VUS I9221 T: is located behind the passenger side instrument lower panel. or this inspection, remove passenger side instrument lower panel. Specification data are reference values and are measured between each terminal and ground. ulse signal is measured by SUT-III. UTI: o not use ground terminals when measuring input/output voltage. oing so may result in damage to the s transistor. Use a ground other than terminals, such as the ground. Terminal o. escription Wire + - color Signal name 9 9 : Reference Value VU T ISIS T Input/ utput 41 round Refrigerant pressure sensor Input 48 round R/ 74 round Sensor ground (Refrigerant pressure sensor) Sensor power supply (Refrigerant pressure sensor) ondition [ngine is running] Warm-up condition oth / switch and blower fan motor switch: (ompressor operates) Remarks: l Specification data are reference values. l Specification data are output/input values which are detected or supplied by the at the connector. [ngine is running] Warm-up condition Idle speed V 0 V Input [Ignition switch: ] 5 V Value (pprox.) II:

93 < U ISIS > [UTTI IR ITIR] * Specification data may not be directly related to their components signals/values/operations. ITR IT ITI SIITI RRRT RSS TRI YUT ngine: fter warming up ir conditioner switch: Shift lever: eutral position o load Idle pproximately 5.7 bar YSI VUS I0417ZZ T: is located behind the passenger side instrument lower panel. or this inspection, remove passenger side instrument lower panel. Specification data are reference values and are measured between each terminal and ground. ulse signal is measured by SUT-III. UTI: o not use ground terminals when measuring input/output voltage. oing so may result in damage to the s transistor. Use a ground other than terminals, such as the ground. Terminal o. escription Wire + - color Signal name 74 round R/ 78 round R/ 9R 9R : Reference Value Sensor power supply (Refrigerant pressure sensor) Sensor ground (Refrigerant pressure sensor) VU T ISIS T Input/ utput 89 round Y/W Refrigerant pressure sensor Input ondition Remarks: l Specification data are reference values. l Specification data are output/input values which are detected or supplied by the at the connector. * Specification data may not be directly related to their components signals/values/operations. Value (pprox.) [Ignition switch: ] pproximately 5.0 V / [ngine is running] Warm-up condition Idle speed [ngine is running] Warm-up condition oth / switch and blower fan switch: (ompressor operates) pproximately 0.3 V pproximately2.3 V ITR IT ITI SIITI RRRT RSS ngine: fter warming up ir conditioner switch: Shift lever: eutral position o load Idle pproximately 5.7 bar II:

94 < U ISIS > [UTTI IR ITIR] TRI YUT YSI VUS I0417ZZ T: is located behind the passenger side instrument lower panel. or this inspection, remove passenger side instrument lower panel. Specification data are reference values and are measured between each terminal and ground. ulse signal is measured by SUT-III. UTI: o not use ground terminals when measuring input/output voltage. oing so may result in damage to the s transistor. Use a ground other than terminals, such as the ground. Terminal o. escription Wire + - color Signal name 35 round R/ 31 round R/ Sensor power supply (Refrigerant pressure sensor) Sensor ground (Refrigerant pressure sensor) Input/ utput 41 round Y/W Refrigerant pressure sensor Input ondition Value (pprox.) [Ignition switch: ] pproximately 5.0 V / [ngine is running] Warm-up condition Idle speed [ngine is running] Warm-up condition oth / switch and blower fan switch: (ompressor operates) pproximately 0.3 V pproximately2.3 V -94

95 (Y TR U) < U ISIS > [UTTI IR ITIR] (Y TR U) Reference Value VUS T ISIS T onitor Item ondition Value/Status SW IR SW UT IT SYS UT IT SW UT R R SW TTRY VT T: iesel engine models only R SW SW U SW R SW-S R SW-R R SW-R R SW-RR WR UT T: iesel engine models only Ignition switch Ignition switch or / switch / switch utside of the room is bright utside of the room is dark ighting switch ighting switch UT uto lock function does not operate uto lock function is operating ack door closed ack door opened Ignition switch rake pedal is not depressed rake pedal is depressed oor lock/unlock switch does not operate ress door lock/unlock switch to the side oor lock/unlock switch does not operate ress door lock/unlock switch to the U side assenger door closed assenger door opened river door closed river door opened Rear door closed Rear door opened Rear R door closed Rear R door opened ngine running an switch (when engine coolant is cool) T: epending on the ambient temperature, battery voltage, etc. The current status maintained with the signal from received. an switch an switch after engine warming U T: epending on the engine coolant temperature, ambient temperature, battery voltage, etc. n n n n n n II: pproximately the same as power supply voltage n n n n n n n RZ IT -95

96 (Y TR U) < U ISIS > [UTTI IR ITIR] T T T: iesel engine models only I R T: iesel engine models only I RU I STTUS T: iesel engine models only SI R SW R WSR SW R WIR W R WIR I R WIR IT R WIR ST S R S ZR SW ngine running ngine running ngine stopped ngine running ngine stopped While the engine stalls ngine running t engine cranking an switch an switch ront fog lamp switch ront fog lamp switch ront washer switch ront washer switch ront wiper switch ront wiper switch ront wiper switch ront wiper switch I ront wiper switch ront wiper switch IT ny position other than front wiper stop position ront wiper stop position The vehicle without glass break sensor The vehicle with glass break sensor When hazard switch is not pressed When hazard switch is pressed IT TI SW 1 SW 2 I SW SW onitor Item ondition Value/Status / WS SW ighting switch ighting switch 2 ighting switch ighting switch 2 ighting switch ighting switch I lose the hood T: Vehicles without theft warning system are -fixed pen the hood T: The item is indicated, but not monitored pproximately the same as water temperature gauge reading pproximately the same as tachometer reading n ST ST RU R n n n n n n n n n isplays a setting time of the follow me home function set by the work support n n n n -96

97 (Y TR U) < U ISIS > [UTTI IR ITIR] I SW Ignition switch or Ignition switch Ignition switch or I SW Ignition switch n IT VU Wiper intermittent dial is in a dial position I-Y I-Y U Y SW YSS Y SS I YSS U IT-S I RY 1 RY 2 RY 3 RY 4 RY 5 I RSS SW UT SI T T: iesel engine models SSI SW RVRS SW US SW onitor Item ondition Value/Status RR SW RR SW button of Intelligent ey is not pressed button of Intelligent ey is pressed U button of Intelligent ey is not pressed U button of Intelligent ey is pressed echanical key is removed from key cylinder echanical key is inserted to key cylinder button of key fob is not pressed button of key fob is pressed T: The item is indicated, but not monitored U button of key fob is not pressed U button of key fob is pressed ight & rain sensor is in normal condition ight & rain sensor is with internal error ey fob I code is not registered in emory 1 ey fob I code is registered in emory 1 ey fob I code is not registered in emory 2 ey fob I code is registered in emory 2 ey fob I code is not registered in emory 3 ey fob I code is registered in emory 3 ey fob I code is not registered in emory 4 ey fob I code is registered in emory 4 ey fob I code is not registered in emory 5 ey fob I code is registered in emory 5 Ignition switch or ngine running Ignition switch Ignition switch ther than lighting switch SS ighting switch SS xcept selector lever R position Selector lever R position Return to ignition switch to position ress ignition switch Rear window defogger switch Rear window defogger switch Rear fog lamp switch Rear fog lamp switch n n n n n n T n n n n n n pproximately the same as outside air temperature n n n n n -97

98 (Y TR U) < U ISIS > [UTTI IR ITIR] onitor Item ondition Value/Status RR WSR SW RR WIR IT RR WIR RR WIR ST S SSR TI SW TR R SW TUR SI TUR SI R Rear washer switch Rear washer switch Rear wiper switch Rear wiper switch IT Rear wiper switch Rear wiper switch Rear wiper stop position ther than rear wiper stop position Ignition switch fter the reception of air bag deployment signal from air bag diagnosis sensor unit uring the reception of air bag deployment signal from air bag diagnosis sensor unit ighting switch ighting switch 1ST When back door opener switch is not pressed When back door opener switch is pressed Turn signal switch Turn signal switch Turn signal switch Turn signal switch R n n n n ther than the following U S uring the unlock operation interlocked with air bag n VI S While driving quivalent to speedometer reading n n n n n -98

99 (Y TR U) < U ISIS > [UTTI IR ITIR] TRI YUT I0145 YSI VUS UTI: heck combination switch system terminal waveform under the loaded condition with lighting switch, turn signal switch and wiper switch is not to be fluctuated by being overloaded. Turn wiper intermittent dial position to 4 except when checking waveform or voltage of wiper intermittent dial position. Wiper intermittent dial position can be confirmed on SUT-III. Refer to S-27, " SW : SUT-III unction ( - SW)". reads the status of the combination switch at 10 ms internal normally. Refer to S-10, "System escription". -99

100 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch (Wiper intermittent dial 4) 0 V ront wiper switch I (Wiper intermittent dial 4) 1 () round ombination switch UTUT 1 utput ombination switch Rear wiper switch IT (Wiper intermittent dial 4) ny of the condition below with all switch Wiper intermittent dial 1 Wiper intermittent dial 2 Wiper intermittent dial 3 Wiper intermittent dial 6 Wiper intermittent dial V I0160 ll switch 0 V ighting switch 2 2 (Y) round ombination switch UTUT 4 utput ombination switch (Wiper intermittent dial 4) ighting switch SS ront fog lamp switch Turn signal switch 9.3 V I0163 ll switch 0 V ighting switch UT 3 () round ombination switch UTUT 3 utput ombination switch (Wiper intermittent dial 4) Rear fog lamp switch ront wiper switch IST ront wiper switch IT ront wiper switch 9.3 V I0162 ll switch (Wiper intermittent dial 4) 0 V ront washer switch (Wiper intermittent dial 4) 4 (R) round ombination switch UTUT 2 utput ombination switch Rear wiper switch (Wiper intermittent dial 4) Rear washer switch (Wiper intermittent dial 4) ny of the condition below with all switch Wiper intermittent dial 1 Wiper intermittent dial 5 Wiper intermittent dial V I

101 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch ighting switch 1ST 0 V 5 (W) round ombination switch UTUT 5 utput ombination switch (Wiper intermittent dial 4) ighting switch 2 ighting switch I Turn signal switch R 9.1 V I () round oor lock/unlock switch (ock) Input oor lock/unlock switch ot pressed 1.2 V I0154 ressed to the lock side 0 V 8 () round azard switch Input azard switch ot pressed 1.3 V I0154 ressed 0 V 9 (R) round oor lock/unlock switch (Unlock) Input oor lock/unlock switch ot pressed 1.2 V I0154 ressed to the unlock side 0 V 12 () round ack door opener switch Input ack door opener switch ot pressed 1.2 V I0154 ressed 0 V -101

102 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) Ignition switch or 0 V 13 (R) round Shock detect sensor Input Ignition switch 14 (/R) 15 (/) 16 (R) 6.0 V round / switch Input / switch ot pressed attery voltage ressed 0 V round an switch Input an switch ot pressed attery voltage ressed 0 V round larm link utput Ignition switch or attery voltage I (R) round ight & rain sensor serial link Input/ utput Ignition switch 8.7 V I V 18 (S) round Security indicator utput Security indicator linking 10.3 V I0014 attery voltage 19 () - Input/ utput 20 () - Input/ utput 21 (S) round Rear window defogger switch Input Rear window defogger switch ot pressed 1.1 V I0154 While pressing 0 V -102

103 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) 24 (R) round oor lock status indicator utput oor lock status indicator attery voltage 0 V 25 (R) round Rear door switch Input Rear door switch (When rear door closed) (When rear door opened) 0 V 11.2 V I (R) round river door switch Input river door switch (When driver door closed) 11.2 V I0924 (When driver door opened) 0 V 27 (R) round assenger door switch Input assenger door switch (When passenger door closed) 11.2 V I0924 (When passenger door opened) 0 V 28 () round ack door switch Input ack door switch (When back door closed) (When back door opened) attery voltage 0 V 29 () round Rear door switch R Input Rear door switch R (When rear door R closed) 11.2 V I0924 (When rear door R opened) 0 V 30 (S) round udio link Input/ utput -103

104 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch (Wiper intermittent dial 4) 1.3 V I0165 ront fog lamp switch (Wiper intermittent dial 4) 1.3 V I (R) round ombination switch IUT 5 Input ombination switch Rear fog lamp switch (Wiper intermittent dial 4) 1.3 V I0168 Rear wiper switch (Wiper intermittent dial 4) 1.3 V I0169 ny of the condition below with all switch Wiper intermittent dial 1 Wiper intermittent dial 2 Wiper intermittent dial 6 Wiper intermittent dial V I

105 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch 1.4 V I0165 ighting switch SS 1.3 V I () round ombination switch IUT 2 Input ombination switch (Wiper intermittent dial 4) ighting switch V I0166 ront wiper switch IT 1.3 V I0168 ront wiper switch I 1.3 V I

106 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch 1.4 V I0165 Turn signal switch 1.3 V I (V) round ombination switch IUT 1 Input ombination switch (Wiper intermittent dial 4) Turn signal switch R 1.3 V I0166 ront wiper switch 1.3 V I0168 ront washer switch 1.3 V I

107 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch (Wiper intermittent dial 4) 1.4 V I0165 ighting switch UT (Wiper intermittent dial 4) 1.3 V I (R) round ombination switch IUT 4 Input ombination switch ighting switch 1ST (Wiper intermittent dial 4) 1.3 V I0166 Rear wiper IT (Wiper intermittent dial 4) 1.3 V I0167 ny of the condition below with all switch Wiper intermittent dial 1 Wiper intermittent dial V I

108 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch (Wiper intermittent dial 4) 1.4 V I0165 ighting switch I (Wiper intermittent dial 4) 1.3 V I () round ombination switch IUT 3 Input ombination switch ighting switch 2 (Wiper intermittent dial 4) 1.3 V I0167 Rear wiper switch 1.3 V I0169 ny of the condition below with all switch Wiper intermittent dial 1 Wiper intermittent dial 2 Wiper intermittent dial V I (V) round ey switch Input Insert mechanical key into ignition key cylinder Remove mechanical key from ignition key cylinder attery voltage 0 V 37 (R) round power supply Input Ignition switch Ignition switch or 0 V attery voltage 38 (W) round Ignition power supply Input Ignition switch or Ignition switch 0 V attery voltage -108

109 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + 39 () 40 () 41 (V) 42 (V) 43 () round round round round escription Signal name TS antenna amp. TS antenna amp. attery power supply Interior room lamp power supply Input/ utput Input/ utput Input/ utput Insert mechanical key into ignition key cylinder Insert mechanical key into ignition key cylinder Input Ignition switch attery voltage utput round Rear wiper motor utput ondition fter passing the interior room lamp battery saver operation time ny other time after passing the interior room lamp battery saver operation time Rear wiper switch Rear wiper switch Rear wiper stop position ust after Insert mechanical key into ignition key cylinder. ointer of tester should move ust after Insert mechanical key into ignition key cylinder. ointer of tester should move 0 V attery voltage 0 V attery voltage 0 V Value (pprox.) 44 (/W) round Rear wiper auto stop Input Ignition switch ny position other than rear wiper stop position I (R) round ack door lock actuator utput ack door opener switch ressed ot pressed Turn signal switch attery voltage (300ms) 0 V 0 V 47 (/Y) round Turn signal utput Ignition switch Turn signal switch Turn signal switch 0 V 6.5 V I (/) round Turn signal R utput Ignition switch Turn signal switch R 49 (Y) round Rear fog lamp utput ighting switch 1ST and front fog lamp switch Rear fog lamp switch Rear fog lamp switch 6.5 V 0 V attery voltage I (R/W) *1 (R)*2 round Stop lamp switch Input epress the brake pedal Release the brake pedal attery voltage 0 V -109

110 (Y TR U) < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) + 52 (R) 53 () 54 () round round Room lamp timer control ower window power supply *1: With Intelligent ey system *2: Without Intelligent ey system utput utput round oor unlock (ll) utput 55 () 56 (Y) *1 round oor lock (ll) utput (S) *2 57 (Y) 58 () 59 (R) 60 (R) Interior room lamp Ignition switch oor lock/unlock switch or ressed to the unlock side ressed to the lock side round round Ignition switch 0 V round round escription Signal name attery power supply ower window power supply Input/ utput round Super lock utput round river door unlock utput oor lock/unlock switch ressed to the unlock side ressed to the lock side attery voltage 0 V 0 V attery voltage attery voltage 0 V 0 V attery voltage Input Ignition switch attery voltage utput Ignition switch attery voltage When lock button of key fob or Intelligent ey is not pressed When lock button of key fob or Intelligent ey is pressed oor lock/unlock switch ondition ressed to the unlock side ressed to the lock side 0 V attery voltage attery voltage 0 V Value (pprox.) -110

111 UT. < U ISIS > [UTTI IR ITIR] UT. Reference Value TRI YUT II: II0179ZZ YSI VUS Terminal o. (Wire color) escription + Signal name Input/ utput ondition Value (pprox.) 1 () round lower motor control signal utput Ignition switch lower speed: 1st- 6th speed (manual) Ignition switch lower speed: 7th speed (manual) 2.5 V 9.0 V 3 (V) round / signal Input/ utput Ignition switch SI () 7 () ot pressed 12 V round / switch signal utput / switch ressed 0 V round Sunload sensor Input 9 () round ngine coolant temperature signal Input t idle [after warming up, approx. 80 (176 )] T: The wave forms vary depending on coolant temperature. SI

112 UT. < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) escription + Signal name Input/ utput ondition Value (pprox.) T: aximum voltage may be 5 V due to specifications (connected units) 14 (Y) round Speed sensor (8-pulse) Input Speed meter operated (When vehicle speed is approx. 40 km/h) SI (R) 17 () 18 (Y) 20 (W) 21 (R) 22 (R) round Illumination signal Input Ignition switch 12 V Ignition switch 0 V round round Ignition switch 0 V round ower supply from I 2 Ignition switch attery voltage round ower supply for each door motor Input Ignition switch attery voltage round / cut Input Ignition switch 0 V round Rear window defogger feedback signal Input Rear window defogger: Rear window defogger: 0 V 12 V When rear window defogger switch is depressed. 23 (S) round Rear window defogger signal Input ZI1036 When rear window defogger switch is released. II () 25 () 26 (R) 27 (R) 28 () 34 () round lower motor signal Input UT SW: (lower motor operate.) UT SW: round Intake sensor Input round Sensor round Ignition switch 0 V round In-vehicle sensor Input round T sensor Input round igh-level VT SW signal Input igh-level VT SW: igh-level VT SW: 0 V 12 V 12 V 0 V -112

113 UT. < U ISIS > [UTTI IR ITIR] Terminal o. (Wire color) 36 () 38 (R) 39 (Y) 40 (R) escription + Signal name Input/ utput ondition round Illumination ground Ignition switch 0 V round lower motor feedback signal Input lower speed: 1st 10 V round ower supply from TT Ignition switch attery voltage round ower supply from I Ignition switch attery voltage Value (pprox.) -113

114 UT. < U ISIS > [UTTI IR ITIR] Wiring iagram IR ITIR TR SYST II: IW

115 UT. < U ISIS > [UTTI IR ITIR] IW

116 UT. < U ISIS > [UTTI IR ITIR] IW

117 UT. < U ISIS > [UTTI IR ITIR] IW

118 UT. < U ISIS > [UTTI IR ITIR] IW

119 UT. < U ISIS > [UTTI IR ITIR] IW

120 UT. < U ISIS > [UTTI IR ITIR] IW

121 UT. < U ISIS > [UTTI IR ITIR] IW

122 IR ITIR TR < SYT ISIS > [UTTI IR ITIR] SYT ISIS IR ITIR TR iagnosis hart y Symptom II: Symptom / system does not come on. ir outlet does not change. ode door motor does not operate normally. igh-level ventilator door motor does not operate normally. igh-level ventilator door does not change. ischarge air temperature does not change. ir mix door motor does not operate normally. Intake door does not change. Intake door motor does not operate normally. lower motor operation is malfunctioning. agnet clutch does not engage. Insufficient cooling Insufficient heating oise Self-diagnosis cannot be performed. emory function does not operate. Reference o to Trouble iagnosis rocedure for / System. o to Trouble iagnosis rocedure for ode oor otor. () o to Trouble iagnosis rocedure for igh-level Ventilator oor otor. () o to Trouble iagnosis rocedure for ir ix oor otor. () o to Trouble iagnosis rocedure for Intake oor otor. () o to Trouble iagnosis rocedure for lower otor. o to Trouble iagnosis rocedure for agnet lutch. o to Trouble iagnosis rocedure for Insufficient ooling. o to Trouble iagnosis rocedure for Insufficient eating. o to Trouble iagnosis rocedure for oise. o to Trouble iagnosis rocedure for Self-diagnosis. o to Trouble iagnosis rocedure for emory unction. -89, "iagnosis rocedure" -47, "iagnosis rocedure" -50, "iagnosis rocedure" -54, "iagnosis rocedure" -59, "iagnosis rocedure" -62, "iagnosis rocedure" -66, "iagnosis rocedure" -123, "Inspection procedure" -125, "Inspection procedure" -127, "Inspection procedure" -129, "Inspection procedure" -130, "Inspection procedure" -122

123 ISUIIT I < SYT ISIS > [UTTI IR ITIR] ISUIIT I escription II: Symptom Insufficient cooling o cold air comes out. (ir flow volume is normal.) Inspection procedure II: WIT U R4 onnect the R4 to the vehicle and perform the pressure inspection with the gauge. Is there refrigerant? YS >> T >> heck for refrigerant leakages with the refrigerant leakage detecting fluorescent leak detector. Refer to -35, "Inspection"(R16/R20), -87, "Inspection" (9) or -139, "Inspection" (9R). -2 >> T 2 after repairing or replacing the parts according to the inspection results. 2. R RRIRT UT 1. onnect R4 to the vehicle and discharge the refrigerant. 2. Recharge with the proper amount of refrigerant and perform the inspection with the refrigerant leakage detecting fluorescent leak detector. Refer to -35, "Inspection" (R16/R20), -87, "Inspection" (9) or -139, "Inspection" (9R). YS >> T 3. >> Refill the refrigerant and repair or replace the parts according to the inspection results. 3. RRIRT Y RSSUR onnect R4 to the vehicle and perform the performance test. Refer to -32, "erformance hart" (R16/R20), -84, "erformance hart" (9) or -136, "erformance hart" (9R). YS >> T 4. >> erform the diagnosis with the gauge pressure. Refer to -14, "SYT ISIS R- UR : Trouble iagnosis or Unusual ressure" (R16/R20), -66, "SYT ISIS RUR : Trouble iagnosis or Unusual ressure" (9) or -118, "SY- T ISIS RUR : Trouble iagnosis or Unusual ressure" (9R). 4. STTI TRTUR STTI TRIR heck the setting of temperature setting trimmer. Refer to -6, "escription & Inspection". 1. heck that the temperature setting trimmer is set to + direction. T: The control temperature can be set with the setting of temperature setting trimmer. 2. Set temperature control dial to 0. re the symptoms solved? YS >> erform the setting separately if necessary.. >> T 5. 5.RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to 2. oes code o. 20 appear on the display? YS >> T 6. >> o to appropriate malfunctioning sensor circuit. Refer to -27, "iagnosis escription", see o RR S-ISIS ST-4 erform self-diagnosis ST-4. Refer to -27, "iagnosis escription", see o.1 to

124 ISUIIT I < SYT ISIS > [UTTI IR ITIR] Is it operated normally? YS >> T 7. >> erform the diagnosis applicable to each output device. 7.RR S-ISIS ST-5 erform self-diagnosis ST-5. Refer to -27, "iagnosis escription", see o.1 to 10. YS >> T 8. >> o to appropriate malfunctioning sensor circuit. Refer to -27, "iagnosis escription". 8. / RSSR T heck the / compressor belt. Refer to -16, "hecking" (R16), -135, "hecking" (R20), - 260, "Inspection and djustment" (9) or -352, "hecking" (9R). YS >> T 9. >> djust or replace the / compressor belt. 9. IR R UT heck duct and nozzle, etc. of / system for air leakage. YS >> erform the setting separately if necessary. T 4. >> Repair or replace parts according to the inspection results. -124

125 ISUIIT TI < SYT ISIS > [UTTI IR ITIR] ISUIIT TI escription II: Symptom Insufficient heating o warm air comes out. (ir flow volume is normal.) Inspection procedure II: I SYST 1. heck engine coolant level and check for leakage. Refer to -9, "Inspection" (R16), -30, "Inspection" (R20), -53, "Inspection" (9) or -76, "Inspection" (9R). 2. heck radiator cap. Refer to -12, "RSRVIR T : Inspection" (R16), -33, "RSR- VIR T : Inspection" (R20), -56, "RITR : Inspection" (9) or -79, "RS- RVIR T : Inspection" (9R). 3. heck water flow sounds of engine coolant. Refer to -9, "Refilling" (R16), -30, "Refilling" (R20), -53, "Refilling" (9) or -76, "Refilling" (9R). YS >> T 2. >> Refill the engine coolant and repair or replace the parts according to the inspection results. 2. STTI TRTUR STTI TRIR 1. heck the setting of temperature setting trimmer. Refer to -6, "escription & Inspection". 2. heck that the temperature setting trimmer is set to direction. T: The control temperature can be set with the setting of temperature setting trimmer. 3. Set temperature control dial to 0. re the symptoms solved? YS >> erform the setting separately if necessary.. >> WIT IS I: T 3. WIT SI I: T T TR RTI heck T heater. Refer to -71, "omponent unction heck". YS >> T 4. >> Repair or replace malfunctioning part(s). 4. RTI 1. Turn temperature control dial (driver side) and raise temperature setting to 30.0 after warming up the engine. 2. heck that warm air blows from outlets. YS >>. >> T 5. 5.RR S-ISIS ST-2 erform self-diagnosis ST-2. Refer to -27, "iagnosis escription", see o. 1 to 2. oes code o. 20 appear on the display? YS >> T 6. >> o to appropriate malfunctioning sensor circuit. Refer to -27, "iagnosis escription", see o RR S-ISIS ST-4 erform self-diagnosis ST-4. Refer to -27, "iagnosis escription", see o. 1 to 5. Is it installed normally? -125

126 ISUIIT TI < SYT ISIS > [UTTI IR ITIR] YS >> T 7. >> erform the diagnosis applicable to each output device. 7.RR S-ISIS ST-5 erform self-diagnosis ST-5. Refer to -27, "iagnosis escription". YS >> T 8. >> o to appropriate malfunctioning sensor circuit. Refer to -27, "iagnosis escription". 8. IR R UT heck duct and nozzle, etc. of / system for air leakage. YS >> T 9. >> Repair or replace parts according to the inspection results. 9. TR S ISTTI ITI heck the heater hose installation condition visually (for twist, crush, etc.). YS >> T 10. >> Repair or replace parts according to the inspection results. 10. TRTUR TR S 1. heck the temperature of inlet hose and outlet hose of heater core. 2. heck that the inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the inlet side. UTI: The temperature inspection should be performed in a short time because the engine coolant temperature is too hot. YS >> T 11. >> Replace the heater core after performing the procedures after the cooling system inspection again. T R TR R Replace the heater core. Refer to VT-42, "xploded View". re the symptoms solved? YS >>. >> erform the procedures after the cooling system inspection again. T

127 IS < SYT ISIS > [UTTI IR ITIR] IS escription II: Symptom oise oise is heard when the / system operates. Inspection procedure II: RTI 1. perate the / system and check the operation. Refer to -6, "escription & Inspection". 2. heck the parts where noise is occurring. an the parts where noise is occurring be checked? YS-1 >> oise from blower fan motor: T 2. YS-2 >> oise from compressor: T 3. YS-3 >> oise from expansion valve: T 4. YS-4 >> oise from / piping (pipe, flexible hose): T 6. YS-5 >> oise from / compressor belt: T 7. >> 2. WR TR 1. Remove blower fan motor. 2. Remove foreign materials that are in the blower unit. 3. heck the noise from blower fan motor again. YS >>. >> Replace blower fan motor. 3.R RSSR 1. orrect the refrigerant with R4. 2. Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant. 3. heck for the noise from compressor again. YS >>. >> Replace compressor. 4. WIT U RSSUR erform the diagnosis with the gauge pressure. Refer to -14, "SYT ISIS RUR : Trouble iagnosis or Unusual ressure" (R16/R20), -66, "SYT ISIS R- UR : Trouble iagnosis or Unusual ressure" (9) or -118, "SYT ISIS RUR : Trouble iagnosis or Unusual ressure" (9R). YS >> T 5. >> Repair or replace malfunctioning part(s). 5.R XSI VV 1. orrect the refrigerant with R4. 2. Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant. 3. heck for the noise from expansion valve again. re the symptoms solved? YS >>. >> Replace expansion valve. 6. / II (I, XI S) 1. heck / piping [pipe, flexible hose (for deformation and damage, etc.)]. 2. heck the installation condition of clips and brackets, etc. of / piping (pipe, flexible hose). -127

128 IS < SYT ISIS > [UTTI IR ITIR] YS >> ix the line with rubber or come vibration absorbing material. >> Repair or replace parts according to the inspection results. 7. / RSSR T heck tension of the / compressor belt. Refer to -16, "hecking" (R16), -135, "hecking" (R20), -260, "Inspection and djustment" (9) or -352, "hecking" (9R). YS >> heck the noise from compressor: T 3. >> djust or replace the / compressor belt according to the inspection results. -128

129 S-ISIS T RR < SYT ISIS > [UTTI IR ITIR] S-ISIS T RR escription II: Symptom: Self-diagnosis function does not operate normally. Inspection procedure II: S-ISIS UTI 1. Turn ignition switch. 2. Set in self-diagnosis mode as follows. Within 10 seconds after starting engine (ignition switch is turned.), press / switch for at least 5 seconds. T: If battery voltage drops below 12 V during diagnosis ST-3, door motor speed becomes slower and as a result, the system may generate an error even when operation is normal. To avoid this, start engine before performing this diagnosis. oes self-diagnosis function operate? YS >>. >> T WR SUY RU IRUIT UT heck power supply and ground circuit of auto amp. Refer to -89, "omponent unction heck". YS >> Replace auto amp. >> Repair or replace malfunctioning part(s). -129

130 RY UTI S T RT < SYT ISIS > [UTTI IR ITIR] RY UTI S T RT escription II: Symptom emory function does not operate normally. The setting is not maintained. (It returns to the initial condition.) Inspection procedure II: RTI 1. Set temperature control dial to ress / switch. 3. Turn ignition switch. 4. Turn ignition switch. 5. ress UT switch or / switch. 6. heck that the set temperature is maintained. YS >>. >> T WR SUY RU IRUIT UT heck power supply and ground circuit of auto amp. Refer to -89, "omponent unction heck". YS >> Replace auto amp. >> Repair or replace malfunctioning part(s). -130

131 RUTIS < RUTI > [UTTI IR ITIR] RUTI RUTIS recaution for Supplemental Restraint System (SRS) "IR " and "ST T R-TSIR" II: The Supplemental Restraint System such as IR and ST T R-TSIR, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the SRS IR and ST T of this Service anual. WRI: To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized ISS/IIITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. or removal of Spiral able and ir ag odule, see the SRS IR. o not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service anual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. recaution ecessary for Steering Wheel Rotation fter attery isconnect II: T: This rocedure is applied only to models with Intelligent ey system and TS (ISS TI-TT SYS- T). Remove and install all control units after disconnecting both battery cables with the ignition knob in the position. lways use SUT-III to perform self-diagnosis as a part of each function inspection after finishing work. If T is detected, perform trouble diagnosis according to self-diagnostic results. or models equipped with the Intelligent ey system and TS, an electrically controlled steering lock mechanism is adopted on the key cylinder. or this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and steering wheel rotation will become impossible. If steering wheel rotation is required when battery power is interrupted, follow the procedure below before starting the repair operation. RTI RUR 1. onnect both battery cables. T: Supply power using jumper cables if battery is discharged. 2. Use the Intelligent ey or mechanical key to turn the ignition switch to the position. t this time, the steering lock will be released. 3. isconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated. 4. erform the necessary repair operation. 5. When the repair work is completed, return the ignition switch to the position before connecting the battery cables. (t this time, the steering lock mechanism will engage.) 6. erform a self-diagnosis check of all control units using SUT-III. -131

132 RUTIS < RUTI > [UTTI IR ITIR] recaution for rocedure without owl Top over II: When performing the procedure after removing cowl top cover, cover the lower end of windshield with urethane, etc. Working with -134a (R-134a) II3706 II: UTI: -12 (R-12) refrigerant and -134a (R-134a) refrigerant are not compatible. These refrigerants must never be mixed, even in the smallest amounts. If the refrigerants are mixed and compressor malfunction is likely occur. Use only specified lubricant for the -134a (R-134a) / system and -134a (R-134a) components. If lubricant other than that specified is used, compressor malfunction is likely to occur. The specified -134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The following handling precautions must be observed: - When removing refrigerant components from a vehicle, immediately cap (seal) the component to minimize the entry of moisture from the atmosphere. - When installing refrigerant components to a vehicle, never remove the caps (unseal) until just before connecting the components. onnect all refrigerant loop components as quickly as possible to minimize the entry of moisture into system. - nly use the specified lubricant from a sealed container. Immediately reseal containers of lubricant. Without proper sealing, lubricant will become moisture saturated and should not be used. - ever allow lubricant (issan / System il Type S) to come in contact with styrene foam parts. amage may result. eneral Refrigerant recaution -132 II: WRI: void breathing / refrigerant and lubricant vapor or mist. xposure may irritate eyes, nose and throat. Use only approved recovery/recycling equipment to discharge -134a (R-134a) refrigerant. If accidental system discharge occurs, ventilate work area before resuming service. dditional health and safety information may be obtained from refrigerant and lubricant manufacturers. ever release refrigerant into the air. Use approved recovery/recycling equipment to capture the refrigerant every time an air conditioning system is discharged. lways wear eye and hand protection (goggles and gloves) when working with any refrigerant or air conditioning system. ever store or heat refrigerant containers above 52 (126 ). ever heat a refrigerant container with an open flame; if container warming is required, place the bottom of the container in a warm pail of water. ever intentionally drop, puncture, or incinerate refrigerant containers. eep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns. Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent suffocation. ever pressure test or leak test -134a (R-134a) service equipment and/or vehicle air conditioning systems with compressed air during repair. Some mixtures of air and -134a (R-134a) have been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause injury or property damage. dditional health and safety information may be obtained from refrigerant manufacturers. Refrigerant onnection II: new type refrigerant connection has been introduced to all refrigerant lines except the following location.

133 RUTIS < RUTI > [UTTI IR ITIR] xpansion valve to evaporator Refrigerant pressure sensor to liquid tank -RI RRIRT TI 1. eater sealing 2. xpansion valve 3. -ring 4. vaporator 5. ow pressure pipe 1 and high pressure 6. onnector pipe fixing bolt pipe 2 assembly 7. igh pressure pipe 1 8. ondenser assembly 9. ixing bolt 10. ompressor 11. eater & cooling unit assembly 12. eater & blower unit assembly 13. Refrigerant pressure sensor 14. iquid tank 15. ipe fixing bolt 16. ow pressure flexible hose 17. ow & high pipe bracket support 18. ow pressure flexible hose and pipe ipes fixing clip 20. ow pressure pipe 2 fixing clamp assembly 21. iquid tank fixing screw 22. iquid tank fixing bracket 23. igh pressure flexible hose UTI: The new and former refrigerant connections use different -ring configurations. ever confuse - rings since they are not interchangeable. If a wrong -ring is installed, refrigerant may leak at the connection. -Ring art umbers and Specifications 1I

134 RUTIS < RUTI > [UTTI IR ITIR] onnection type iping connection point art number QTY -ring size ew ow pressure pipe 2 to expansion valve igh pressure flexible pipe 1 to condenser igh pressure pipe 1 to expansion valve ow pressure pipe 1 and high pressure Inlet pipe 2 assembly to expansion valve utlet ow pressure pipe 1 and high pressure Inlet pipe 2 assembly to evaporator utlet igh pressure pipe 1 to liquid tank ompressor to low pressure flexible hose ompressor to high pressure flexible hose iquid tank to condenser WRI: ake sure all refrigerant is discharged into the recycling equipment and the pressure in the system is less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it. UTI: When replacing or cleaning refrigerant cycle components, observe the following. When the compressor is removed, store it in the same way at it is when mounted on the car. ailure to do so will cause lubricant to enter the low-pressure chamber. When connecting tubes, always use a torque wrench and a back-up wrench. fter disconnecting tubes, immediately plug all openings to prevent entry of dust and moisture. When installing an air conditioner in the vehicle, connect the pipes at the final stage of the operation. ever remove the seal caps of pipes and other components until just before required for connection. llow components stored in cool areas to warm to working area temperature before removing seal caps. This prevents condensation from forming inside / components. Thoroughly remove moisture from the refrigeration system before charging the refrigerant. lways replace used -rings. When connecting tube, apply lubricant to circle of the -rings shown in illustration. e careful not to apply lubricant to threaded portion. ame : issan / System il Type S -ring must be closely attached to the groove portion of tube. When replacing the -ring, be careful not to damage -ring and tube. onnect tube until a click can be heard, then tighten the nut or bolt by hand. ake sure that the - ring is installed to tube correctly. -134

135 RUTIS < RUTI > [UTTI IR ITIR] fter connecting line, perform leak test and make sure that there is no leakage from connections. When the refrigerant leaking point is found, disconnect that line and replace the -ring. Then tighten connections of seal seat to the specified torque. Service quipment R861 II: RVRY/RYI QUIT e certain to follow the manufacturer s instructions for machine operation and machine maintenance. ever introduce any refrigerant other than that specified into the machine. TRI TTR e certain to follow the manufacturer s instructions for tester operation and tester maintenance. VUU U The lubricant contained inside the vacuum pump is not compatible with the specified lubricant for -134a (R-134a) / systems. The vent side of the vacuum pump is exposed to atmospheric pressure. So the vacuum pump lubricant may migrate out of the pump into the service hose. This is possible when the pump is switched off after evacuation (vacuuming) and hose is connected to it. To prevent this migration, use a manual valve placed near the hoseto-pump connection, as follows. Usually vacuum pumps have a manual isolator valve as part of the pump. lose this valve to isolate the service hose from the pump. or pumps without an isolator, use a hose equipped with a manual shut-off valve near the pump end. lose the valve to isolate the hose from the pump. If the hose has an automatic shut-off valve, disconnect the hose from the pump. s long as the hose is connected, the valve is open and lubricating oil may migrate. Some one-way valves open when vacuum is applied and close under no vacuum condition. Such valves may restrict the pump s ability to pull a deep vacuum and are not recommended. I U ST R

136 RUTIS < RUTI > [UTTI IR ITIR] e certain that the gauge face indicates -134a or R-134a. e sure the gauge set has 1/2-16 threaded connections for service hoses. onfirm the set has been used only with refrigerant -134a (R-134a) and specified lubricants. SRVI SS e certain that the service hoses display the markings described (colored hose with black stripe). ll hoses must include positive shutoff devices (either manual or automatic) near the end of the hoses opposite to the manifold gauge. S533 SRVI URS ever attempt to connect -134a (R-134a) service couplers to a -12 (R-12) / system. The -134a (R-134a) couplers will not properly connect to the -12 (R-12) system. owever, if an improper connection is attempted, discharging and contamination may occur. R272 Shut-off valve rotation lockwise ounterclockwise / service valve pen lose R273 RRIRT WIT S Verify that no refrigerant other than -134a (R-134a) and specified lubricants have been used with the scale. If the scale controls refrigerant flow electronically, the hose fitting must be 1/2-16. RI YIR Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder s top valve when filling the cylinder with refrigerant. lso, the accuracy of the cylinder is generally less than that of an electronic scale or of quality recycle/recharge equipment. R

137 RSSR < RUTI > [UTTI IR ITIR] RSSR eneral recautions II: UTI: lug all openings to prevent moisture and foreign matter from entering. When the compressor is removed, store it in the same way at it is when mounted on the car. When replacing or repairing compressor, follow aintenance of ubricant Quantity in ompressor exactly. Refer to -29, "djustment" (R16/R20) or -81, "djustment" (9). eep friction surfaces between clutch and pulley clean. If the surface is contaminated with lubricant, wipe it off by using a clean waste cloth moistened with thinner. fter compressor service operation, turn the compressor shaft by hand more than five turns in both directions. This will equally distribute lubricant inside the compressor. fter the compressor is installed, let the engine idle and operate the compressor for one hour. fter replacing the compressor magnet clutch, apply voltage to the new one and check for normal operation. -137

138 URST TTR < RUTI > [UTTI IR ITIR] URST TTR eneral recautions UTI: II: The / system contains a fluorescent leak detection dye used for locating refrigerant leaks. n ultraviolet (UV) lamp is required to illuminate the dye when inspecting for leaks. lways wear fluorescence enhancing UV safety goggles to protect your eyes and enhance the visibility of the fluorescent dye. The fluorescent dye leak detector is not a replacement for an electrical leak detector (SST: ). The fluorescent dye leak detector should be used in conjunction with an electrical leak detector (SST: ) to pin-point refrigerant leaks. or the purpose of safety and customer s satisfaction, read and follow all manufacture s operating instructions and precautions prior to performing the work. compressor shaft seal should not necessarily be repaired because of dye seepage. The compressor shaft seal should only be repaired after confirming the leak with an electrical leak detector (SST: ). lways remove any remaining dye from the leak area after repairs are completed to avoid a misdiagnosis during a future service. ever allow dye to come into contact with painted body panels or interior components. If dye is spilled, clean immediately with the approved dye cleaner. luorescent dye left on a surface for an extended period of time cannot be removed. ever spray the fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.). ever use more than one refrigerant dye bottle (1/4 ounce /7.4 cc) per / system. eak detection dyes for -134a (R-134a) and -12 (R-12) / systems are different. ever use -134a (R-134a) leak detection dye in -12 (R-12) / system, or -12 (R-12) leak detection dye in -134a (R-134a) / system, or / system damage may result. The fluorescent properties of the dye will remain for three years or a little over unless a compressor malfunction occurs. ITIITI T: Vehicles with factory installed fluorescent dye have a green label. Vehicles without factory installed fluorescent dye have a blue label. ITIITI R VI Vehicles with factory installed fluorescent dye have the identification label on the front side of hood. -138

139 ISIS RIR WRW < SI ISTI > [U IR ITIR] SI ISTI ISIS RIR WRW Work low TI W II: IST T USTR IT isten to customer complaint. (et detailed information about the conditions and environment when the symptom occurs.) >> T 2. 2.VRIY T SYT WIT RTI Verify the symptom with operational check. Refer to -140, "escription & Inspection". >> T T RRIT TRU ISIS o to appropriate trouble diagnosis (Refer to -212, "iagnosis hart y Symptom" below). >> T 4. 4.RIR R R Repair or replace the specific parts >> T 5. 5.I inal check. YS >> UT >> T

140 ISTI USTT < SI ISTI > [U IR ITIR] ISTI USTT escription & Inspection II: SRITI The purpose of the operational check is to check if the individual system operates properly. onditions : ngine running at normal operating temperature ISTI RUR lower 1. Turn fan control dial to 1-speed. lower should operate on low speed. 2. Then fan control dial to 2-speed, and continue checking blower speed until all speeds are checked. 3. eave blower on max. speed. If, go to trouble diagnosis procedure for -164, "iagnosis rocedure". If, continue the check. ischarge ir (ode control dial) 1. Turn mode control dial to each position. 2. onfirm that discharge air comes out according to the air distribution table. Refer to -147, "System escription". If, go to mode door cable adjustment. Refer to VT-75, "djustment". If, continue the check. ischarge ir (igh-level ventilator switch) 1. ress high-level ventilator switch. igh-level ventilator switch indicator should illuminate. 2. ress high-level ventilator switch again. igh-level ventilator indicator should not illuminate. 3. onfirm that discharge air comes out. If, go to trouble diagnosis procedure for -158, "iagnosis rocedure". If, continue the check. Intake ir 1. ress R switch. Recirculation indicator should illuminate. 2. ress R switch again. Recirculation indicator should not illuminate. 3. isten for intake door position change. (Slight change of blower sound can be heard.) If, go to trouble diagnosis procedure for -161, "iagnosis rocedure". If, continue the check. Temperature ecrease 1. Turn temperature control dial counterclockwise until full cold position. 2. heck for cold air at discharge air outlets SII0311

141 ISTI USTT < SI ISTI > [U IR ITIR] If, go to trouble diagnosis procedure for -213, "Inspection procedure". If, continue the check. Temperature Increase 1. Turn temperature control dial clockwise until full hot position. 2. heck for hot air at discharge air outlets. If, go to trouble diagnosis procedure for -214, "Inspection procedure". If, continue the check. / Switch 1. Turn fan control dial to the desired (1 to 4 speed) position. 2. ress / switch. 3. / switch indicator will turn. onfirm that the compressor clutch engages (sound or visual inspection). -141

142 RSSR TR UTI < UTI ISIS > [U IR ITIR] UTI ISIS RSSR TR UTI escription RII RTI ompressor is not activated. unctional circuit diagram II: II0178 unctional initial inspection chart (1) : SI (1) : IR SI (2) : IR SW (2) : RQ ocation T ITR Yes SUT-III T ITR Yes Yes I /R T ITR Yes UT TIV TST Yes omponent art ocation II: I RTT -142

143 RSSR TR UTI < UTI ISIS > [U IR ITIR] 1. Refrigerant pressure sensor 2. ompressor SSR RTT odels II0169ZZ -143

144 RSSR TR UTI < UTI ISIS > [U IR ITIR] II0171ZZ 1. Intake door motor 2. igh-level ventilator door motor 3. lower motor 4. lower fan resistor 5. T heater 6. eater control panel 7. igh-level ventilator switch R odels -144

145 RSSR TR UTI < UTI ISIS > [U IR ITIR] 1. Intake door motor 2. igh-level ventilator door motor 3. lower motor 4. lower fan resistor 5. T heater 6. eater control panel 7. igh-level ventilator switch omponent s role II0172ZZ II:

146 RSSR TR UTI < UTI ISIS > [U IR ITIR] omponent lower fan resistor lower motor ompressor eater control panel igh-level ventilator door motor igh-level ventilator switch intake door motor T heater Refrigerant pressure sensor Reference -166, "omponent Inspection" -164, "escription" -168, "escription" -180, "escription" -158, "escription" -52, "omponent Inspection" -161, "escription" -178, "omponent Inspection" -172, "omponent Inspection" -146

147 U IR ITIR SYST < UTI ISIS > [U IR ITIR] U IR ITIR SYST System escription TR RTI ontroller II: an control dial This dial turns the fan and, and controls fan speed. Temperature control dial This dial is to adjust the temperature of the discharge air. ode control dial This dial controls the outlet air flow. / switch ompressor is or with this switch. (ressing the / switch when the / switch is will turn the / switch and compressor.) Rear window defogger switch When illumination is, rear window is defogged. II0170 Recirculation (R) switch Recirculation (R) position: Interior air is recirculated inside the vehicle. (The indicator lamp will light.) resh (R) position: utlet air is drawn into the passenger compartment. (The indicator lamp will not light.) igh-level ventilator switch When high-level ventilator switch is, high-level ventilator switch indicator turn, and high-level ventilator door is opened. -147

148 U IR ITIR SYST < UTI ISIS > [U IR ITIR] ISR IR W SII

149 U IR ITIR SYST < UTI ISIS > [U IR ITIR] SWITS TIR TR UTI II0177 omponent art ocation I RTT II0174 II:

150 U IR ITIR SYST < UTI ISIS > [U IR ITIR] II0169ZZ 1. Refrigerant pressure sensor 2. ompressor SSR RTT odels -150

151 U IR ITIR SYST < UTI ISIS > [U IR ITIR] 1. Intake door motor 2. igh-level ventilator door motor 3. lower motor 4. lower fan resistor 5. T heater 6. eater control panel 7. igh-level ventilator switch R odels II0171ZZ -151

152 U IR ITIR SYST < UTI ISIS > [U IR ITIR] II0172ZZ 1. Intake door motor 2. igh-level ventilator door motor 3. lower motor 4. lower fan resistor 5. T heater 6. eater control panel 7. igh-level ventilator switch omponent escription II:

153 U IR ITIR SYST < UTI ISIS > [U IR ITIR] omponent lower fan resistor lower motor ompressor eater control panel igh-level ventilator door motor igh-level ventilator switch intake door motor T heater Refrigerant pressure sensor Reference -166, "omponent Inspection" -164, "escription" -168, "escription" -180, "escription" -158, "escription" -160, "omponent Inspection" -161, "escription" -178, "omponent Inspection" -172, "omponent Inspection" -153

154 ISIS SYST () < UTI ISIS > [U IR ITIR] ISIS SYST () IT IT : SUT-III unction ( - IT) II: ITI IT SUT-III performs the following functions via communication with. iagnosis mode WR SURT S-I RSUTS I SURT TR T ITR TIV TST U ITIITI IURTI unction escription hanges the setting for each system function. isplays the diagnosis results judged by. Refer to S-62, "T Index". onitors the reception status of communication viewed from. The input/output signals are displayed. The signals used to activate each device are forcibly supplied from. The part number is displayed. nables to read and save the vehicle specification. nables to write the vehicle specification when replacing. SYST ITI can perform the following functions for each system. T: It can perform the diagnosis modes except the following for all sub system selection items. System Sub system selection item iagnosis mode WR SURT T ITR TIV TST oor lock R Rear window defogger RR R Warning chime UZZR Interior room lamp timer IT Remote keyless entry system UTI RT T xterior lamp Wiper and washer WIR Turn signal and hazard warning lamps SR ir conditioner IR ITR Intelligent ey system ITIT Y ombination switch SW Immobilizer IU Interior room lamp battery saver TTRY SVR Trunk open TRU Vehicle security system TT Signal buffer system SI UR T heater system T TR IR ITIR IR ITIR : SUT-III unction ( - U IR ITIR) T ITR II:

155 ISIS SYST () < UTI ISIS > [U IR ITIR] isplay item list T TR T TR : SUT-III unction ( - T TR) T ITR isplay Item ist TIV TST Test item onitor item [unit] ontents I SW n/ isplays [I position (n)/, position ()] status as judged from ignition switch signal. SI n/ isplays [ (n)/ ()] status as judged from blower fan motor switch signal. IR SW n/ isplays [ (n)/ ()] status as judged from / switch signal. onitor Item [Unit] WR UT [/RZ/IT] SI [n/] I STTUS [ST/ST/RU/R] T T [ ] TTRY VT [V] I R [rpm] UTSI T [ ] escription isplays [/RZ/IT] condition of the T heater states. isplays [ ()/ ()] status as judged from blower fan motor signal. isplays [ST/ST/RU/R] condition of the engine states. II: The engine coolant temperature (determined by the signal voltage of the engine coolant temperature sensor) is displayed. The power supply voltage of is displayed. Indicates the engine speed computed from the signal of the crankshaft position sensor. The outside air temperature (determined by the signal voltage of the T sensor) is displayed. Test Item peration escription T TR T 1 T 2 T 3 This test is able to check T heater operation. -155

156 T UT TR SYST < UTI ISIS > [U IR ITIR] T UT TR SYST escription II: SYST ISRITI When / switch of the heater control panel is turned, the compressor signal is input to. transmits the compressor signal to via communication. judges the condition of each sensor (Refrigerant pressure sensor signal, accelerator position signal, etc.), and transmits the compressor signal to I /R via communication. I /R receives the compressor signal from, turns the / relay, and activates the compressor. agnet lutch ircuit SII0288 RSSR RTTI TR When the high-pressure side detected by the refrigerant pressure sensor is either approx. 2.7 a (approx kg/cm 2 ) or more, or approx a (approx. 1.4 kg/cm 2 ) or less, turns the / relay and stops the compressor. -156

157 T TR TR SYST < UTI ISIS > [U IR ITIR] T TR TR SYST escription II: SYST SRITI controls T (ositive Temperature oefficient) heater correspond to fan signal, ambient temperature, engine coolant temperature, engine speed, engine status, electrical power cut freeze signal and battery voltage. sends T signal to I /R, via communication. judges whether T can be turned, based on each sensor status (ambient temperature, engine speed, engine coolant temperature, etc.). If it judges T can be turned, it send T heater relay signal to I /R via communication. System peration SII

158 I-V VTITR R TR < T ISIS > [U IR ITIR] T ISIS I-V VTITR R TR escription T SRITI II: igh-level Ventilator oor otor The high-level ventilator door motor (1) are attached to the / unit assembly. It rotates so that air is discharged from the outlet set by the high-level ventilator switch. otor rotation is conveyed to a link which activates the high-level ventilator door. models : Vehicle front II0024ZZ R models : Vehicle front omponent unction heck II0025ZZ II: IR SYT Y RRI T WI RTI 1. ress high-level ventilator switch. igh-level ventilator switch indicator should illuminate. 2. ress high-level ventilator switch again. igh-level ventilator indicator should not illuminate. 3. onfirm that discharge air comes out. YS >>. >> o to diagnosis procedure. Refer to -158, "iagnosis rocedure". iagnosis rocedure 1. I-V VTITR R TR I heck high-level ventilator door control linkage. Is it installed normally? YS >> T 2. >> Repair or adjust control linkage. 2. WR SUY R TR TR 1. isconnect heater control panel connector II:

159 I-V VTITR R TR < T ISIS > [U IR ITIR] 2. Turn ignition switch. 3. heck voltage between heater control panel harness connector 54 terminal 1 and ground. (+) ( ) eater control panel Voltage onnector Terminal 54 1 round attery voltage YS >> T 3. >> T RU IRUIT R TR TR 1. Turn ignition switch. 2. heck continuity between heater control panel harness connector 54 terminal 20 and ground. eater control panel onnector Terminal ontinuity round ontinuity should exist YS >> T 4. >> Repair harness or connector. 4. WR SUY R I-V VTITR R TR 1. Reconnect heater control panel connector. 2. Turn ignition switch. 3. heck voltage between high-level ventilator door motor harness connector 43 terminal 1 and 2. (+) ( ) igh-level ventilator door motor onnector Terminal onnector Terminal YS >> Replace high-level ventilator door motor. >> T IRUIT TIUITY TW TR TR I-V VTITR R TR 1. Turn ignition switch. 2. isconnect heater control panel connector and high-level ventilator door motor connector. 3. heck continuity between heater control panel harness connector 54 terminal 13 and high-level ventilator door motor harness connector 43 terminal heck continuity between heater control panel harness connector 54 terminal 14 and high-level ventilator door motor harness connector 43 terminal 2. eater control panel YS >> Replace heater control panel. igh-level ventilator door motor onnector Terminal onnector Terminal ondition igh-level ventilator SW: igh-level ventilator SW: ontinuity ontinuity should exist Voltage pprox. 12

160 I-V VTITR R TR < T ISIS > [U IR ITIR] >> Repair harness or connector. 6. US heck 10 fuse [o.4 located in the fuse block (/)]. Refer to -113, "use, onnector and Terminal rrangement". YS >> Repair harness or connector. >> Replace fuse. omponent Inspection I-V VTITR SWIT heck continuity between high-level ventilator switch (1) 52 terminal 2and 3. II: SII0304ZZ igh-level ventilator switch onnector Terminal onnector Terminal ondition igh-level VT SW: igh-level VT SW: ontinuity ontinuity should not exist ontinuity should exist -160

161 IT R TR < T ISIS > [U IR ITIR] IT R TR escription T SRITI Intake oor otor The intake door motor (1) is attached to the / unit assembly. It rotates so that air is drawn from inlets set by the heater control panel. otor rotation is conveyed to a lever which activates the intake door. II: omponent unction heck 1.IR SYT Y RRI T WI RTI 1. ress R switch. 2. R indicator should illuminate. 3. isten for intake door position change. (Slight change of blower sound can be heard.) 4. ress R switch again. 5. R indicator should not illuminate. YS >>. >> o to diagnosis procedure. Refer to -161, "iagnosis rocedure". iagnosis rocedure II0027ZZ II: II: IT R TR I heck intake door control linkage. Is it installed normally? YS >> T 2. >> Repair or adjust control linkage. 2. WR SUY R TR TR 1. isconnect heater control panel connector. 2. Turn ignition switch. 3. heck voltage between heater control panel harness connector 54 terminal 1 and ground. (+) ( ) eater control panel Voltage onnector Terminal 54 1 round attery voltage YS >> T 3. >> T RU IRUIT R TR TR 1. Turn ignition switch. 2. heck continuity between heater control panel harness connector 54 terminal 20 and ground. -161

162 IT R TR < T ISIS > [U IR ITIR] eater control panel onnector Terminal ontinuity round ontinuity should exist YS >> T 4. >> Repair harness or connector. 4. WR SUY R IT R TR 1. Reconnect heater control panel connector. 2. Turn ignition switch. 3. heck voltage between intake door motor harness connector 68 ( models) or 303 (R models) terminal 1 and 2. models R models YS >> Replace intake door motor. >> T IRUIT TIUITY TW TR TR IT R TR 1. Turn ignition switch. 2. isconnect heater control panel connector and intake door motor connector. 3. heck continuity between heater control panel harness connector 54 terminal 10 and intake door motor harness connector 68 terminal 1 ( models) or 303 terminal 1 (R models). 4. heck continuity between heater control panel harness connector 54 terminal 11 and intake door motor harness connector 68 terminal 2 ( models) or 303 terminal 2 (R models). models R models (+) ( ) Intake door motor onnector Terminal onnector Terminal 68 ondition 2 1 R SW: R SW: (+) ( ) Intake door motor onnector Terminal onnector Terminal 303 eater control panel ondition 2 1 R SW: R SW: Intake door motor onnector Terminal onnector Terminal ontinuity ontinuity should exist Voltage pprox. 12 Voltage pprox. 12 eater control panel Intake door motor onnector Terminal onnector Terminal YS >> Replace heater control panel. >> Repair harness or connector. ontinuity ontinuity should exist -162

163 IT R TR < T ISIS > [U IR ITIR] 6. US heck 10 fuse [o.4, located in the fuse block (/)]. Refer to -113, "use, onnector and Terminal rrangement". YS >> Repair harness or connector. >> Replace fuse. -163

164 WR TR < T ISIS > [U IR ITIR] WR TR escription T SRITI The blower motor (1) utilizes a brush motor with a sirocco fan type. II: : Vehicle front omponent unction heck II0028ZZ II: IR SYT Y RRI T WI RTI 1. Turn fan control dial clockwise. lower should operate on low speed. 2. Turn fan control dial clockwise, and continue checking blower speed until all speeds checked. YS >>. >> o to diagnosis procedure. Refer to -164, "iagnosis rocedure" iagnosis rocedure 1. WR TR RTI heck blower motor operating. Is blower motor operation under starting blower speed control? YS >>. >> lower motor dose not operate: T WR SUY R WR TR 1. Turn ignition switch. 2. isconnect blower motor connector. 3. Turn ignition switch. 4. heck voltage between blower motor harness connector 312 terminal 1 and ground. II: (+) ( ) lower motor Voltage onnector Terminal round attery voltage >> T 3. >> T WR TR RU IRUIT 1. Turn ignition switch. 2. Turn fan control dial clockwise to 4th. 3. heck continuity between blower motor harness connector 312 terminal 2 and ground. -164

165 WR TR < T ISIS > [U IR ITIR] lower motor onnector Terminal ondition ontinuity round an control dial: 4th ontinuity should exist YS >> Replace blower motor. >> T WR VT WR RY 1. Turn ignition switch. 2. Remove blower relay. Refer to -113, "use, onnector and Terminal rrangement". 3. Turn ignition switch. 4. heck the voltage between blower relay fuse block terminals 1, 3 and body ground. Refer to -111, "escription" for relay terminal assignment. (+) ( ) lower relay 1 round 3 Voltage attery voltage YS >> T 5. >> T WR RY 1. Turn ignition switch. 2. Install blower relay. Refer to -113, "use, onnector and Terminal rrangement". 3. Turn ignition switch. 4. heck operation sound of the blower relay after switching ignition switch. YS >> T 6. >> Replace blower relay. 6. US heck 15 fuses [o. 15 and 16, located in the fuse block (/)]. Refer to -113, "use, onnector and Terminal rrangement". YS >> Repair harness or connector. >> Replace fuse. 7. IITI SWIT IRUIT heck ignition switch circuit. Refer to -91, "iagnosis rocedure" (WIT I-Y, WITUT SUR ), -354, "iagnosis rocedure" (WIT I-Y & SUR ), -596, "iagnosis rocedure" (WITUT I-Y, WITUT SUR ) or -757, "iagnosis rocedure" (WITUT I-Y & SUR ). YS >> Repair harness or connector. >> Replace malfunctioning parts. 8. IRUIT TIUITY TW WR RSISTR. 1. Turn ignition switch. 2. isconnect blower fan resistor connector. 3. heck continuity between blower fan resistor harness connector 305 terminal 1 and 2, 3, 4. Refer to -166, "omponent Inspection". YS >> T

166 WR TR < T ISIS > [U IR ITIR] >> Replace blower fan resistor. 9. IRUIT TIUITY TW WR TR WR RSISTR 1. isconnect blower motor connector. 2. heck continuity between blower motor harness connector 312 terminal 2 and blower fan resistor 305 terminal 1. lower motor lower fan resistor ontinuity onnector Terminal onnector Terminal ontinuity should exist >> T 10. >> Repair harness or connector. 10. IRUIT ITIUITY TW WR TR RSISTR SWIT 1. isconnect fan switch connector. 2. heck continuity between blower motor resistor harness connector 305 terminal 2, 3, 4 and fan switch 88 terminal 2, 3, 4. lower fan resistor an SW onnector Terminal onnector Terminal ontinuity ontinuity should exist >> T 11. >> Repair harness or connector. 11. SWIT heck continuity between fan switch harness connector 88 terminal 5 and 1, 2, 3, 4, 6. YS >> Repair fan switch ground harness or connector. >> Replace fan switch. omponent Inspection SW onnector Terminal onnector Terminal ondition an control dial: except 4 an control dial: 1st 3 an control dial: 2nd 2 an control dial: 3rd 1 an control dial: 4th ontinuity ontinuity should exist II: WR TR -166

167 WR TR < T ISIS > [U IR ITIR] onfirm smooth rotation of the blower motor (1). : Vehicle front WR RSISTR heck continuity between blower fan resistor connector (1) 305 terminal 1 and 2, 3, 4. : Vehicle front II0028ZZ II0034ZZ lower fan resistor Resistance (Ω) onnector Terminal onnector Terminal 2 pprox pprox pprox

168 T UT < T ISIS > [U IR ITIR] T UT escription II: agnet clutch drives a compressor, by a signal of I /R. omponent unction heck II: IR SYT Y RRI T WI RTI 1. Turn fan control dial to the desired (1 to 4 speed) position. 2. ress / switch. 3. / switch indicator will turn. onfirm that the magnet clutch engages (sound or visual inspection). oes the magnet clutch operate? YS >>. >> o to iagnosis rocedure. Refer to -168, "iagnosis rocedure". iagnosis rocedure II: RR UT TIV TST erform UT TIV TST. Refer to S-9, "iagnosis escription". oes the magnet clutch operate? YS >> WIT SUT-III: T 5. WITUT SUT-III: T 6. >> heck 10 fuse (o. 53, located in I /R), and T IRUIT TIUITY TW I /R RSSR 1. Turn ignition switch. 2. isconnect I /R connector and compressor connector. 3. heck continuity between I /R harness connector 12 terminal 23 and compressor harness connector 17 (With asoline ngine) or 18 (With iesel ngine) terminal 1. With asoline ngine I /R ompressor ontinuity onnector Terminal onnector Terminal ontinuity should exist With iesel ngine I /R ompressor ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 3. >> Repair harness or connector. 3. IRUIT TIUITY TW RSSR RU 1. Turn ignition switch. 2. heck continuity between compressor harness connector 17 (With asoline ngine) or 18 (With iesel ngine) terminal 2 and ground. With asoline ngine ompressor onnector Terminal ontinuity 17 2 round ontinuity should exist -168

169 T UT < T ISIS > [U IR ITIR] With iesel ngine ompressor onnector Terminal ontinuity 18 2 round ontinuity should exist YS >> T 4. >> Repair harness or connector. 4. T UT IRUIT heck for operation sound when applying battery voltage direct current to terminal. YS >> Replace I /R. >> Replace compressor. 5. IUT (IR SW) SI heck compressor / signal in T ITR. Refer to -154, "IR ITIR : - SUT-III unction ( - U IR ITIR)". / SW / SW : IR SW : IR SW YS >> T 8. >> T IRUIT TIUITY TW TR TR 1. Turn ignition switch. 2. isconnect heater control panel connector and harness connector. 3. heck continuity between heater control panel harness connector 54 terminal 7 and harness connector 65 terminal 14. eater control panel ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 7. >> Repair harness or connector. 7. / SWIT SI 1. Turn ignition switch. 2. isconnect heater control panel connector. 3. Turn ignition switch. 4. heck voltage between heater control panel harness connector 54 terminal 7 and ground. (+) ( ) eater control panel Voltage onnector Terminal 54 7 round attery voltage 5. Reonnect heater control panel connector. 6. ress / switch and turn fan control dial except position. 7. heck voltage between heater control panel harness connector 54 terminal 7 and ground. -169

170 T UT < T ISIS > [U IR ITIR] YS >> T 8. >> Replace heater control panel. 8. RRIRT RSSUR SSR WIT SUT-III 1. Start the engine. 2. heck voltage of refrigerant pressure sensor in T ITR. Refer to -192, "R16 : Reference Value" (R16), -193, "R20 : Reference Value" (R20), -193, "9 : Reference Value" (9) or -194, "9R : Reference Value" (9R). WITUT SUT-III 1. Start the engine. 2. heck voltage between harness connector 8 terminal 41 (With asoline ngine), 68 terminal 78 (With 9 ngine) or 131 terminal 31 (With 9R ngine) and ground. With asoline ngine With 9 ngine (+) ( ) eater control panel onnector Terminal 54 7 round onnector (+) ( ) Terminal 8 41 round ondition / SW: SW: ondition / SW: (lower motor operates.) Voltage pprox. 0 Voltage pprox (+) ( ) onnector Terminal round With 9R ngine ondition / SW: (lower motor operates.) Voltage pprox. 2.3 onnector (+) ( ) Terminal round ondition / SW: (lower motor operates.) Voltage pprox. 2.3 YS >> WIT SUT-III: T 9. WITUT SUT-III: T 10. >> Refer to -305, "iagnosis rocedure" [R16 (WIT UR-)], -585, "iagnosis rocedure" [R16 (WITUT UR-)], -308, "iagnosis rocedure" [R20 (WIT UR-)], -587, "iagnosis rocedure" [R20 (WITUT UR-)], -135, "iagnosis rocedure" (9) or R-185, "iagnosis rocedure" (9R). 9. IUT ( ) SI heck / signal in T ITR. Refer to -154, "IR ITIR : SUT-III unction ( - U IR ITIR)". SW SW : SI : SI -170

171 T UT < T ISIS > [U IR ITIR] YS >> T 14. >> T IRUIT TIUITY TW TR TR 1. Turn ignition switch. 2. isconnect heater control panel connector and harness connector. 3. heck continuity between heater control panel harness connector 54 terminal 8 and harness connector 65 terminal 15. eater control panel ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 11. >> Repair harness or connector. 11. SI 1. Reconnect heater control panel connector. 2. Turn ignition switch. 3. heck voltage between heater control panel harness connector 54 terminal 8 and ground. (+) ( ) eater control panel Voltage onnector Terminal 54 8 round attery voltage 4. Turn fan control dial clockwise 5. heck voltage between heater control panel harness connector 54 terminal 8 and ground. (+) ( ) eater control panel onnector Terminal 54 8 round ondition YS >> T 14. >> T IRUIT TIUITY TW SWIT 1. Turn ignition switch. 2. isconnect fan switch connector. 3. heck continuity between fan switch harness connector 88 terminal 6 and Turn fan control dial clockwise. 5. heck continuity between fan switch harness connector 88 terminal 6 and 5. an control dial: except Voltage pprox. 0 SW onnector Terminal onnector Terminal ondition ontinuity an control dial: ontinuity should not exist -171

172 T UT < T ISIS > [U IR ITIR] SW onnector Terminal onnector Terminal ondition an control dial: except YS >> T 13. >> Replace heater control panel. 13. RU IRUIT R SWIT heck continuity between fan switch harness connector 88 terminal 5 and ground. ontinuity ontinuity should exist SW onnector Terminal ontinuity 88 5 round ontinuity should exist YS >> T 14. >> Repair harness or connector. 14. UITI heck communication. Refer to -28, " ommunication Signal hart". I /R YS >> Replace. >> Repair or replace malfunctioning part(s). omponent Inspection II: RRIRT RSSUR SSR The refrigerant pressure sensor (1) is attached to the liquid tank. ake sure that the / refrigerant pressure and the sensor output voltage are within the specified range as shown in the / operating condition figure. Refer to -305, "escription" [R16 (WIT UR-)], -585, "escription" [R16 (WITUT UR- )], -308, "escription" [R20 (WIT UR-)], -587, "escription" [R20 (WITUT UR-)], - 135, "escription" (9) or R-185, "escription" (9R). II0090ZZ SI

173 T TR < T ISIS > [U IR ITIR] T TR escription II: I /R operate a T heater, by a signal of. omponent unction heck 1.IR SYT Y RRI T WI RTI II: SUT-III TIV TST 1. Start engine. 2. Select T TR of active test item. UTI: ngine must be cold. attery must be charged. 3. Turn fan control dial clockwise. 4. Turn temperature control dial to full hot position. 5. With operating the test item, check that T heater operation. 6. heck for warm air at discharge air outlet. T 3 T 2 T 1 oes the T heater operate? YS >>. >> o to iagnosis rocedure. Refer to -173, "iagnosis rocedure". iagnosis rocedure 1. T TR-1 RTI : T 3 is indicated, but cannot be tested. : T heater I operation : T heater operation : Stop the T heater operation II: SUT -III TIV TST 1. isconnect T heater connector. 2. Start engine. 3. Select T TR of active test item. 4. With operating the item, check voltage between T heater harness connector 117 terminal 3 and ground. onnector (+) ( ) Test item T heater Terminal round T TR In the inspection result normal? YS >> T 2. >> T RU IRUIT R T TR-1 1. Turn ignition switch. 2. heck continuity between T heater harness connector 116 terminal 1 and ground. Voltage pprox. 0 T 1 attery voltage T 2 pprox

174 T TR < T ISIS > [U IR ITIR] T heater onnector Terminal ontinuity round ontinuity should exist. YS >> T 3. >> Repair harness or connector. 3. T TR-2 RTI 1. Start engine. 2. Select T TR of active test item. 3. With operating the item, check voltage between T heater harness connector 117 terminal 4 and ground. onnector (+) ( ) Test item T heater Terminal round T TR YS >> T 4. >> T RU IRUIT R T TR-2 1. Turn ignition switch. 2. heck continuity between T heater harness connector 116 terminal 2 and ground. Voltage pprox. 0 T 1 pprox. 0 T 2 attery voltage T heater onnector Terminal ontinuity round ontinuity should exist YS >> Replace T heater. >> Repair harness or connector. 5. VT R T RY-1 1. Turn ignition switch. 2. isconnect T relay Turn ignition switch. 4. heck voltage between T relay-1 harness connector 53 terminal 3 and ground. (+) ( ) T relay-1 Voltage onnector Terminal 53 3 round attery voltage YS >> T 7. >> T US heck 30 fuse (o. 37, located in the fuse, fusible link and relay box). Refer to -114, "use and usible ink rrangement". -174

175 T TR < T ISIS > [U IR ITIR] YS >> Repair harness or connector. >> Replace fuse. 7. T RY-1 heck T relay-1. Refer to -76, "omponent Inspection". YS >> T 8. >> Replace T relay IRUIT TIUITY TW T RY-1 T TR heck continuity between T relay-1 harness connector 53 terminal 5 and T heater harness connector 117 terminal 3. T relay-1 T heater ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 9. >> Repair harness or connector. 9. WR SUY R T RY-1 1. Turn ignition switch. 2. heck voltage between T relay-1 harness connector 53 terminal 1 and ground. (+) ( ) T relay-1 Voltage onnector Terminal 53 1 round attery voltage YS >> T 11. >> T US heck 10 fuse [o. 17, located in the fuse block (/)]. Refer to -113, "use, onnector and Terminal rrangement". YS >> Repair harness or connector. >> Replace fuse. 11. IRUIT TIUIT TW T RY-1 I /R heck continuity between T relay-1 harness connector 53 terminal 2 and I /R harness connector 11 terminal 11. T relay-1 I /R ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 18. >> Repair harness or connector. 12. VT R T RY-2 1. Turn ignition switch. 2. isconnect T relay

176 T TR < T ISIS > [U IR ITIR] 3. Turn ignition switch. 4. heck voltage between T relay-2 harness connector 54 terminal 3 and ground. (+) ( ) T relay-2 Voltage onnector Terminal 54 3 round attery voltage YS >> T 14. >> T US heck 30 fuse (o. 35, located in the fuse, fusible link and relay box). Refer to -114, "use and usible ink rrangement". YS >> Repair harness or connector. >> Replace fuse. 14. T RY-2 heck T relay-2. Refer to -76, "omponent Inspection". YS >> T 15. >> Replace T relay IRUIT TIUIT TW T RY-2 T TR heck continuity between T relay-2 harness connector 54 terminal 5 and T heater harness connector 117 terminal 4. T relay-2 T heater ontinuity onnector Terminal onnector Terminal ontinuity should exist. YS >> T 16. >> Repair harness or connector. 16. WR SUY R T RY-2 1. Turn ignition switch. 2. heck voltage between T relay-2 harness connector 54 terminal 1 and ground. (+) ( ) T relay-2 Voltage onnector Terminal 54 1 round attery voltage YS >> T 17. >> T IRUIT TIUIT TW T RY-2 I /R heck continuity between T relay-2 harness connector 54 terminal 2 and I /R harness connector 11 terminal

177 T TR < T ISIS > [U IR ITIR] T relay-1 I /R ontinuity onnector Terminal onnector Terminal ontinuity should exist. YS >> T 18. >> Repair harness or connector. 18. IUT ( ) SI heck / signal in T ITR. Refer to -154, "IR ITIR : SUT-III unction ( - U IR ITIR)". SW SW : SI : SI YS >> T 21. >> T IRUIT TIUITY TW TR TR 1. Turn ignition switch. 2. isconnect heater control panel connector and harness connector. 3. heck continuity between heater control panel harness connector 54 terminal 8 and harness connector 65 terminal 15. eater control panel ontinuity onnector Terminal onnector Terminal ontinuity should exist YS >> T 20. >> Repair harness or connector. 20. SI 1. Reconnect heater control panel connector. 2. Turn ignition switch. 3. heck voltage between heater control panel harness connector 54 terminal 8 and ground. (+) ( ) eater control panel Voltage onnector Terminal 54 8 round attery voltage 4. Turn fan control dial clockwise 5. heck voltage between heater control panel harness connector 54 terminal 8 and ground. (+) ( ) eater control panel onnector Terminal ondition Voltage 54 8 round an control dial: except pprox. 0 YS >> T 21. >> Replace heater control panel. -177

178 T TR < T ISIS > [U IR ITIR] 21. IRUIT TIUITY TW SWIT 1. Turn ignition switch. 2. isconnect fan switch connector. 3. heck continuity between fan switch harness connector 88 terminal 6 and 5. SW onnector Terminal onnector Terminal ondition ontinuity an control dial: ontinuity should not exist 4. Turn fan control dial clockwise. 5. heck continuity between fan switch harness connector 88 terminal 6 and 5. SW onnector Terminal onnector Terminal ondition an control dial: except YS >> T 22. >> Replace heater control panel. 22. RU IRUIT R SWIT heck continuity between fan switch harness connector 88 terminal 5 and ground. ontinuity ontinuity should exist SW onnector Terminal ontinuity 88 5 round ontinuity should exist YS >> T 23. >> Repair harness or connector. 23. UITI heck communication. Refer to -28, " ommunication Signal hart". I /R YS >> Replace I /R. >> Repair or replace malfunctioning part(s). omponent Inspection II: T TR The T heater (1) is attached to the / unit assembly. It generates heat electrically. T RY II0033ZZ -178

179 T TR < T ISIS > [U IR ITIR] heck continuity between terminal 3 and 5. Terminal ondition ontinuity 12V direct current supply between terminal 1 and 2 xist 3 and 5 o current supply ot exist I

180 WR SUY RU IRUIT R TR TR < T ISIS > [U IR ITIR] WR SUY RU IRUIT R TR TR - escription T SRITI eater ontrol anel II: eater control panel ower Supply and round ircuit for eater ontrol anel II0032ZZ SII0305 omponent unction heck II: IR SYT Y RRI T WI RTI 1. Turn fan control dial to the desired (1 to 4 speed) position. 2. ress / switch. 3. / switch indicator will turn. onfirm that the magnet clutch engages (sound or visual inspection). oes magnet clutch engaged? YS >>. >> o to iagnosis rocedure. Refer to -180, "iagnosis rocedure". iagnosis rocedure 1. WR SUY IRUIT R TR TR 1. isconnect heater control panel connector. 2. heck voltage between heater control panel harness connector 54 terminals 1 and ground. II: (+) (-) Ignition switch position eater control panel onnector Terminal 54 1 round pprox. 0 V pprox. 0 V attery voltage YS >> T 3. >> T

181 WR SUY RU IRUIT R TR TR < T ISIS > [U IR ITIR] 2. US heck 10 fuses [os. 4, located in the fuse block (/)]. Refer to -113, "use, onnector and Terminal rrangement". YS >> heck harness for open circuit. Repair or replace if necessary. >> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 3. RU IRUIT R TR TR 1. Turn ignition switch. 2. heck continuity between heater control panel harness connector 54 terminal 20 and ground. eater control panel onnector Terminal ontinuity round ontinuity should exist YS >> Replace heater control panel. >> Repair harness or connector. -181

182 U IR ITIR SYST < T ISIS > [U IR ITIR] U IR ITIR SYST Wiring iagram IR ITIR TR SYST II: IW

183 U IR ITIR SYST < T ISIS > [U IR ITIR] IW

184 U IR ITIR SYST < T ISIS > [U IR ITIR] IW

185 U IR ITIR SYST < T ISIS > [U IR ITIR] IW

186 U IR ITIR SYST < T ISIS > [U IR ITIR] IW

187 U IR ITIR SYST < T ISIS > [U IR ITIR] IW

188 U IR ITIR SYST < T ISIS > [U IR ITIR] IW

189 U IR ITIR SYST < T ISIS > [U IR ITIR] IW

190 U IR ITIR SYST < T ISIS > [U IR ITIR] IW

191 U IR ITIR SYST < T ISIS > [U IR ITIR] IW

192 < U ISIS > [U IR ITIR] U ISIS R16 R16 : Reference Value II: VUS T ISIS T Remarks: Specification data are reference values. Specification data are output/input values which are detected or supplied by the at the connector. *Specification data may not be directly related to their components signals/values/operations. I.e. djust ignition timing with a timing light before monitoring I TII, because the monitor may show the specification data in spite of the ignition timing not being adjusted to the specification data. this I TII monitors the data calculated by the according to the signals input from the camshaft position sensor and other ignition timing related sensors. onitor Item ondition Values/Status RSS S TRI YUT ngine: Idle oth / switch and blower fan switch: (ompressor operates) V YSI VUS I9221 T: is located in the engine room left side near battery. Specification data are reference values and are measured between each terminal and ground. ulse signal is measured by SUT-III. UTI: o not use ground terminals when measuring input/output voltage. oing so may result in damage to the s transistor. Use a ground other than terminals, such as the ground. Terminal o. escription Wire + - color Signal name R20 Input/ utput 41 round / Refrigerant pressure sensor Input 48 round R/ 74 round Y/W Sensor ground (Refrigerant pressure sensor) Sensor power supply (Refrigerant pressure sensor) -192 ondition [ngine is running] Warm-up condition oth / switch and blower fan motor switch: (ompressor operates) [ngine is running] Warm-up condition Idle speed V 0 V [Ignition switch: ] 5 V Value (pprox.)

193 < U ISIS > [U IR ITIR] R20 : Reference Value VUS T ISIS T II: Remarks: l Specification data are reference values. l Specification data are output/input values which are detected or supplied by the at the connector. * Specification data may not be directly related to their components signals/values/operations. I.e. djust ignition timing with a timing light before monitoring I TII, because the monitor may show the specification data in spite of the ignition timing not being adjusted to the specification data. this I TII monitors the data calculated by the according to the signals input from the camshaft position sensor and other ignition timing related sensors. onitor Item ondition Values/Status RSS S TRI YUT ngine: Idle oth / switch and blower fan switch: (ompressor operates) V YSI VUS I9221 T: is located behind the passenger side instrument lower panel. or this inspection, remove passenger side instrument lower panel. Specification data are reference values and are measured between each terminal and ground. ulse signal is measured by SUT-III. UTI: o not use ground terminals when measuring input/output voltage. oing so may result in damage to the s transistor. Use a ground other than terminals, such as the ground. Terminal o. escription Wire + - color Signal name 9 9 : Reference Value Input/ utput 41 round Refrigerant pressure sensor Input 48 round R/ 74 round Sensor ground (Refrigerant pressure sensor) Sensor power supply (Refrigerant pressure sensor) ondition [ngine is running] Warm-up condition oth / switch and blower fan motor switch: (ompressor operates) [ngine is running] Warm-up condition Idle speed V 0 V Input [Ignition switch: ] 5 V Value (pprox.) II: VU T ISIS T Remarks: l Specification data are reference values. l Specification data are output/input values which are detected or supplied by the at the connector. -193

194 < U ISIS > [U IR ITIR] * Specification data may not be directly related to their components signals/values/operations. ITR IT ITI SIITI RRRT RSS TRI YUT ngine: fter warming up ir conditioner switch: Shift lever: eutral position o load Idle pproximately 5.7 bar YSI VUS I0417ZZ T: is located behind the passenger side instrument lower panel. or this inspection, remove passenger side instrument lower panel. Specification data are reference values and are measured between each terminal and ground. ulse signal is measured by SUT-III. UTI: o not use ground terminals when measuring input/output voltage. oing so may result in damage to the s transistor. Use a ground other than terminals, such as the ground. Terminal o. escription Wire + - color Signal name 74 round R/ 78 round R/ 9R 9R : Reference Value Sensor power supply (Refrigerant pressure sensor) Sensor ground (Refrigerant pressure sensor) VU T ISIS T Input/ utput 89 round Y/W Refrigerant pressure sensor Input ondition Remarks: l Specification data are reference values. l Specification data are output/input values which are detected or supplied by the at the connector. * Specification data may not be directly related to their components signals/values/operations. Value (pprox.) [Ignition switch: ] pproximately 5.0 V / [ngine is running] Warm-up condition Idle speed [ngine is running] Warm-up condition oth / switch and blower fan switch: (ompressor operates) pproximately 0.3 V pproximately2.3 V ITR IT ITI SIITI RRRT RSS ngine: fter warming up ir conditioner switch: Shift lever: eutral position o load Idle pproximately 5.7 bar II:

195 < U ISIS > [U IR ITIR] TRI YUT YSI VUS I0417ZZ T: is located behind the passenger side instrument lower panel. or this inspection, remove passenger side instrument lower panel. Specification data are reference values and are measured between each terminal and ground. ulse signal is measured by SUT-III. UTI: o not use ground terminals when measuring input/output voltage. oing so may result in damage to the s transistor. Use a ground other than terminals, such as the ground. Terminal o. escription Wire + - color Signal name 35 round R/ 31 round R/ Sensor power supply (Refrigerant pressure sensor) Sensor ground (Refrigerant pressure sensor) Input/ utput 41 round Y/W Refrigerant pressure sensor Input ondition Value (pprox.) [Ignition switch: ] pproximately 5.0 V / [ngine is running] Warm-up condition Idle speed [ngine is running] Warm-up condition oth / switch and blower fan switch: (ompressor operates) pproximately 0.3 V pproximately2.3 V -195

196 (Y TR U) < U ISIS > [U IR ITIR] (Y TR U) Reference Value VUS T ISIS T II: onitor Item ondition Value/Status SW IR SW UT IT SYS UT IT SW UT R R SW TTRY VT T: iesel engine models only R SW SW U SW R SW-S R SW-R R SW-R R SW-RR WR UT T: iesel engine models only Ignition switch Ignition switch or / switch / switch utside of the room is bright utside of the room is dark ighting switch ighting switch UT uto lock function does not operate uto lock function is operating ack door closed ack door opened Ignition switch rake pedal is not depressed rake pedal is depressed oor lock/unlock switch does not operate ress door lock/unlock switch to the side oor lock/unlock switch does not operate ress door lock/unlock switch to the U side assenger door closed assenger door opened river door closed river door opened Rear door closed Rear door opened Rear R door closed Rear R door opened ngine running an switch (when engine coolant is cool) T: epending on the ambient temperature, battery voltage, etc. The current status maintained with the signal from received. an switch an switch after engine warming U T: epending on the engine coolant temperature, ambient temperature, battery voltage, etc n n n n n n pproximately the same as power supply voltage n n n n n n n RZ IT

197 (Y TR U) < U ISIS > [U IR ITIR] T T T: iesel engine models only I R T: iesel engine models only I RU I STTUS T: iesel engine models only SI R SW R WSR SW R WIR W R WIR I R WIR IT R WIR ST S R S ZR SW ngine running ngine running ngine stopped ngine running ngine stopped While the engine stalls ngine running t engine cranking an switch an switch ront fog lamp switch ront fog lamp switch ront washer switch ront washer switch ront wiper switch ront wiper switch ront wiper switch ront wiper switch I ront wiper switch ront wiper switch IT ny position other than front wiper stop position ront wiper stop position The vehicle without glass break sensor The vehicle with glass break sensor When hazard switch is not pressed When hazard switch is pressed IT TI SW 1 SW 2 I SW SW onitor Item ondition Value/Status / WS SW ighting switch ighting switch 2 ighting switch ighting switch 2 ighting switch ighting switch I lose the hood T: Vehicles without theft warning system are -fixed pen the hood T: The item is indicated, but not monitored pproximately the same as water temperature gauge reading pproximately the same as tachometer reading n ST ST RU R n n n n n n n n n isplays a setting time of the follow me home function set by the work support n n n n -197

198 (Y TR U) < U ISIS > [U IR ITIR] I SW Ignition switch or Ignition switch Ignition switch or I SW Ignition switch n IT VU Wiper intermittent dial is in a dial position I-Y I-Y U Y SW YSS Y SS I YSS U IT-S I RY 1 RY 2 RY 3 RY 4 RY 5 I RSS SW UT SI T T: iesel engine models SSI SW RVRS SW US SW onitor Item ondition Value/Status RR SW RR SW button of Intelligent ey is not pressed button of Intelligent ey is pressed U button of Intelligent ey is not pressed U button of Intelligent ey is pressed echanical key is removed from key cylinder echanical key is inserted to key cylinder button of key fob is not pressed button of key fob is pressed T: The item is indicated, but not monitored U button of key fob is not pressed U button of key fob is pressed ight & rain sensor is in normal condition ight & rain sensor is with internal error ey fob I code is not registered in emory 1 ey fob I code is registered in emory 1 ey fob I code is not registered in emory 2 ey fob I code is registered in emory 2 ey fob I code is not registered in emory 3 ey fob I code is registered in emory 3 ey fob I code is not registered in emory 4 ey fob I code is registered in emory 4 ey fob I code is not registered in emory 5 ey fob I code is registered in emory 5 Ignition switch or ngine running Ignition switch Ignition switch ther than lighting switch SS ighting switch SS xcept selector lever R position Selector lever R position Return to ignition switch to position ress ignition switch Rear window defogger switch Rear window defogger switch Rear fog lamp switch Rear fog lamp switch n n n n n n T n n n n n n pproximately the same as outside air temperature n n n n n -198

199 (Y TR U) < U ISIS > [U IR ITIR] onitor Item ondition Value/Status RR WSR SW RR WIR IT RR WIR RR WIR ST S SSR TI SW TR R SW TUR SI TUR SI R Rear washer switch Rear washer switch Rear wiper switch Rear wiper switch IT Rear wiper switch Rear wiper switch Rear wiper stop position ther than rear wiper stop position Ignition switch fter the reception of air bag deployment signal from air bag diagnosis sensor unit uring the reception of air bag deployment signal from air bag diagnosis sensor unit ighting switch ighting switch 1ST When back door opener switch is not pressed When back door opener switch is pressed Turn signal switch Turn signal switch Turn signal switch Turn signal switch R n n n n ther than the following U S uring the unlock operation interlocked with air bag n VI S While driving quivalent to speedometer reading n n n n n -199

200 (Y TR U) < U ISIS > [U IR ITIR] TRI YUT I0145 YSI VUS UTI: heck combination switch system terminal waveform under the loaded condition with lighting switch, turn signal switch and wiper switch is not to be fluctuated by being overloaded. Turn wiper intermittent dial position to 4 except when checking waveform or voltage of wiper intermittent dial position. Wiper intermittent dial position can be confirmed on SUT-III. Refer to S-27, " SW : SUT-III unction ( - SW)". reads the status of the combination switch at 10 ms internal normally. Refer to S-10, "System escription". -200

201 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition ll switch (Wiper intermittent dial 4) 0 V Value (pprox.) 1 () round ombination switch UTUT 1 utput ombination switch ront wiper switch I (Wiper intermittent dial 4) Rear wiper switch IT (Wiper intermittent dial 4) ny of the condition below with all switch Wiper intermittent dial 1 Wiper intermittent dial 2 Wiper intermittent dial 3 Wiper intermittent dial 6 Wiper intermittent dial V I0160 ll switch ighting switch 2 0 V 2 (Y) round ombination switch UTUT 4 utput ombination switch (Wiper intermittent dial 4) ighting switch SS ront fog lamp switch Turn signal switch 9.3 V I0163 ll switch 0 V ighting switch UT 3 () round ombination switch UTUT 3 utput ombination switch (Wiper intermittent dial 4) Rear fog lamp switch ront wiper switch IST ront wiper switch IT ront wiper switch ll switch (Wiper intermittent dial 4) 0 V 9.3 V I (R) round ombination switch UTUT 2 utput ombination switch ront washer switch (Wiper intermittent dial 4) Rear wiper switch (Wiper intermittent dial 4) Rear washer switch (Wiper intermittent dial 4) ny of the condition below with all switch Wiper intermittent dial 1 Wiper intermittent dial 5 Wiper intermittent dial V I

202 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch 0 V ighting switch 1ST 5 (W) round ombination switch UTUT 5 utput ombination switch (Wiper intermittent dial 4) ighting switch 2 ighting switch I Turn signal switch R 9.1 V I () round oor lock/unlock switch (ock) Input oor lock/unlock switch ot pressed 1.2 V I0154 ressed to the lock side 0 V 8 () round azard switch Input azard switch ot pressed 1.3 V I0154 ressed 0 V 9 (R) round oor lock/unlock switch (Unlock) Input oor lock/unlock switch ot pressed 1.2 V I0154 ressed to the unlock side 0 V 12 () round ack door opener switch Input ack door opener switch ot pressed 1.2 V I0154 ressed 0 V -202

203 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) Ignition switch or 0 V 13 (R) round Shock detect sensor Input Ignition switch 6.0 V I (/R) round / switch Input / switch ot pressed ressed attery voltage 0 V 15 (/) round an switch Input an switch ot pressed ressed attery voltage 0 V 16 (R) round larm link utput Ignition switch or attery voltage 17 (R) round ight & rain sensor serial link Input/ utput Ignition switch 0 V 8.7 V I (S) round Security indicator utput Security indicator linking 10.3 V attery voltage I () 20 () - - Input/ utput Input/ utput 21 (S) round Rear window defogger switch Input Rear window defogger switch ot pressed 1.1 V I0154 While pressing 0 V -203

204 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) 24 (R) round oor lock status indicator utput oor lock status indicator attery voltage 0 V 25 (R) round Rear door switch Input Rear door switch (When rear door closed) 11.2 V I0924 (When rear door opened) 0 V 26 (R) round river door switch Input river door switch (When driver door closed) 11.2 V I0924 (When driver door opened) 0 V 27 (R) round assenger door switch Input assenger door switch (When passenger door closed) 11.2 V I0924 (When passenger door opened) 0 V 28 () round ack door switch Input ack door switch (When back door closed) (When back door opened) attery voltage 0 V 29 () round Rear door switch R Input Rear door switch R (When rear door R closed) 11.2 V I0924 (When rear door R opened) 0 V 30 (S) round udio link Input/ utput -204

205 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch (Wiper intermittent dial 4) 1.3 V I0165 ront fog lamp switch (Wiper intermittent dial 4) 1.3 V I (R) round ombination switch IUT 5 Input ombination switch Rear fog lamp switch (Wiper intermittent dial 4) 1.3 V I0168 Rear wiper switch (Wiper intermittent dial 4) 1.3 V I0169 ny of the condition below with all switch Wiper intermittent dial 1 Wiper intermittent dial 2 Wiper intermittent dial 6 Wiper intermittent dial V I

206 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch 1.4 V I0165 ighting switch SS 1.3 V I () round ombination switch IUT 2 Input ombination switch (Wiper intermittent dial 4) ighting switch V I0166 ront wiper switch IT 1.3 V I0168 ront wiper switch I 1.3 V I

207 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch 1.4 V I0165 Turn signal switch 1.3 V I (V) round ombination switch IUT 1 Input ombination switch (Wiper intermittent dial 4) Turn signal switch R 1.3 V I0166 ront wiper switch 1.3 V I0168 ront washer switch 1.3 V I

208 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch (Wiper intermittent dial 4) 1.4 V I0165 ighting switch UT (Wiper intermittent dial 4) 1.3 V I (R) round ombination switch IUT 4 Input ombination switch ighting switch 1ST (Wiper intermittent dial 4) 1.3 V I0166 Rear wiper IT (Wiper intermittent dial 4) 1.3 V I0167 ny of the condition below with all switch Wiper intermittent dial 1 Wiper intermittent dial V I

209 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) ll switch (Wiper intermittent dial 4) 1.4 V I0165 ighting switch I (Wiper intermittent dial 4) 1.3 V I () round ombination switch IUT 3 Input ombination switch ighting switch 2 (Wiper intermittent dial 4) 1.3 V I0167 Rear wiper switch 1.3 V I0169 ny of the condition below with all switch Wiper intermittent dial 1 Wiper intermittent dial 2 Wiper intermittent dial 3 36 (V) 37 (R) round ey switch Input round power supply Input Insert mechanical key into ignition key cylinder Remove mechanical key from ignition key cylinder Ignition switch Ignition switch or 1.3 V attery voltage 0 V 0 V attery voltage I (W) round Ignition power supply Input Ignition switch or Ignition switch 0 V attery voltage -209

210 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + escription Signal name Input/ utput ondition Value (pprox.) 39 () round TS antenna amp. Input/ utput Insert mechanical key into ignition key cylinder ust after Insert mechanical key into ignition key cylinder. ointer of tester should move 40 () round TS antenna amp. Input/ utput Insert mechanical key into ignition key cylinder ust after Insert mechanical key into ignition key cylinder. ointer of tester should move 41 (V) round attery power supply Input Ignition switch attery voltage 42 (V) round Interior room lamp power supply utput fter passing the interior room lamp battery saver operation time ny other time after passing the interior room lamp battery saver operation time 0 V attery voltage 43 () round Rear wiper motor utput Rear wiper switch Rear wiper switch 0 V attery voltage Rear wiper stop position 0 V 44 (/W) round Rear wiper auto stop Input Ignition switch ny position other than rear wiper stop position I (R) round ack door lock actuator utput ack door opener switch ressed ot pressed attery voltage (300ms) 0 V Turn signal switch 0 V 47 (/Y) round Turn signal utput Ignition switch Turn signal switch 6.5 V I0926 Turn signal switch 0 V 48 (/) round Turn signal R utput Ignition switch Turn signal switch R 6.5 V I (Y) round Rear fog lamp utput ighting switch 1ST and front fog lamp switch Rear fog lamp switch Rear fog lamp switch 0 V attery voltage 51 (R/W) *1 (R)*2 round Stop lamp switch Input epress the brake pedal Release the brake pedal attery voltage 0 V -210

211 (Y TR U) < U ISIS > [U IR ITIR] Terminal o. (Wire color) + 52 (R) 53 () 54 () round round Room lamp timer control ower window power supply *1: With Intelligent ey system *2: Without Intelligent ey system utput utput round oor unlock (ll) utput 55 () 56 (Y) *1 round oor lock (ll) utput (S) *2 57 (Y) 58 () 59 (R) 60 (R) Interior room lamp Ignition switch oor lock/unlock switch or ressed to the unlock side ressed to the lock side round round Ignition switch 0 V round round escription Signal name attery power supply ower window power supply Input/ utput round Super lock utput round river door unlock utput oor lock/unlock switch ressed to the unlock side ressed to the lock side attery voltage 0 V 0 V attery voltage attery voltage 0 V 0 V attery voltage Input Ignition switch attery voltage utput Ignition switch attery voltage When lock button of key fob or Intelligent ey is not pressed When lock button of key fob or Intelligent ey is pressed oor lock/unlock switch ondition ressed to the unlock side ressed to the lock side 0 V attery voltage attery voltage 0 V Value (pprox.) -211

212 IR ITIR TR < SYT ISIS > [U IR ITIR] SYT ISIS IR ITIR TR iagnosis hart y Symptom II: Symptom Reference ir outlet does not change. o to djustment for ode oor. VT-74, "xploded View" ischarge air temperature does not change. Intake door does not change. Intake door motor does not operate normally. igh-level ventilator door does not change. igh-level ventilator door motor does not operate normally. lower motor operation is malfunctioning. agnet clutch does not engage. Insufficient cooling Insufficient heating oise o to djustment for ir ix oor. o to Trouble iagnosis rocedure for Intake oor otor. o to Trouble iagnosis rocedure for igh-level Ventilator oor otor. o to Trouble iagnosis rocedure for lower otor. o to Trouble iagnosis rocedure for agnet lutch. o to Trouble iagnosis rocedure for Insufficient ooling. o to Trouble iagnosis rocedure for Insufficient eating. o to Trouble iagnosis rocedure for oise. VT-76, "xploded View" -161, "iagnosis rocedure" -158, "iagnosis rocedure" -164, "iagnosis rocedure" -168, "iagnosis rocedure" -213, "Inspection procedure" -214, "Inspection procedure" -216, "Inspection procedure" -212

213 ISUIIT I < SYT ISIS > [U IR ITIR] ISUIIT I escription II: Symptom Insufficient cooling o cold air comes out. (ir flow volume is normal.) Inspection procedure II: WIT U R4 onnect R4 to the vehicle and perform the pressure inspection with the gauge. Is there refrigerant? YS >> T >> heck for refrigerant leakages with the refrigerant leakage detecting fluorescent leak detector. Refer to -192, "Inspection" (R16/R20), -244, "Inspection" (9) or -296, "Inspection" (9R). -2 >> T 2 after repairing or replacing the parts according to the inspection results. 2. R RRIRT UT 1. onnect R4 to the vehicle and discharge the refrigerant. 2. Recharge with the proper amount of refrigerant and perform the inspection with the refrigerant leakage detecting fluorescent leak detector. Refer to -192, "Inspection" (R16/R20), -244, "Inspection" (9) or -296, "Inspection" (9R). YS >> T 3. >> Refill the refrigerant and repair or replace the parts according to the inspection results. 3. RRIRT Y RSSUR onnect R4 to the vehicle and perform the performance test. Refer to -189, "erformance hart" (R16/R18), -241, "erformance hart" (9) or -293, "erformance hart" (9R). YS >> T 4. >> erform the diagnosis with the gauge pressure. Refer to -171, "SYT ISIS R- UR : Trouble iagnosis or Unusual ressure" (R16/R20), -223, "SYT ISIS RUR : Trouble iagnosis or Unusual ressure" (9) or -275, "SY- T ISIS RUR : Trouble iagnosis or Unusual ressure" (9R). 4. / RSSR T heck the / compressor belt. Refer to -16, "hecking" (R16), -135, "hecking" (R20), - 260, "Inspection and djustment" (9) or -352, "hecking" (9R). YS >> T 5. >> djust or replace the / compressor belt. 5. IR IX R heck the air mix door cable. Refer to -140, "escription & Inspection". YS >> T 6. >> djust or replace the air mix door cable. 6. IR R UT heck duct and nozzle, etc. of / system for air leakage. YS >>. >> Repair or replace parts according to the inspection results. -213

214 ISUIIT TI < SYT ISIS > [U IR ITIR] ISUIIT TI escription II: Symptom Insufficient heating o warm air comes out. (ir flow volume is normal.) Inspection procedure II: I SYST 1. heck engine coolant level and check for leakage. Refer to -9, "Inspection" (R16), -30, "Inspection" (R20), -53, "Inspection" (9) or -76, "Inspection" (9R). 2. heck radiator cap. Refer to -12, "RSRVIR T : Inspection" (R16), -33, "RSR- VIR T : Inspection" (R20), -56, "RITR : Inspection" (9) or -79, "RS- RVIR T : Inspection" (9R). 3. heck water flow sounds of engine coolant. Refer to -9, "Refilling" (R16), -30, "Refilling" (R20), -53, "Refilling" (9) or -76, "Refilling" (9R). YS >> WIT IS I: T 2. WIT SI I: T 3. >> Refill the engine coolant and repair or replace the parts according to the inspection results. 2. T TR RTI heck T heater. Refer to -173, "omponent unction heck". YS >> T 3. >> Repair or replace malfunctioning part(s). 3. RTI 1. Turn temperature control dial to full hot after warming up the engine. 2. heck that warm air blows from outlets. YS >>. >> T IR IX R heck the air mix door cable. Refer to -140, "escription & Inspection". YS >> T 5. >> djust or replace the air mix door cable. 5. IR R UT heck duct and nozzle, etc. of / system for air leakage. YS >> T 6. >> Repair or replace parts according to the inspection results. 6. TR S ISTTI ITI heck the heater hose installation condition visually (for twist, crush, etc.). YS >> T 7. >> Repair or replace parts according to the inspection results. 7. TRTUR TR S 1. heck the temperature of inlet hose and outlet hose of heater core. -214

215 ISUIIT TI < SYT ISIS > [U IR ITIR] 2. heck that the inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the inlet side. UTI: The temperature inspection should be performed in a short time because the engine coolant temperature is too hot. YS >> T 8. >> Replace the heater core after performing the procedures after the cooling system inspection again. T 1. 8.R TR R Replace the heater core. Refer to VT-93, "xploded View". re the symptoms solved? YS >>. >> erform the procedures after the cooling system inspection again. T

216 IS < SYT ISIS > [U IR ITIR] IS escription II: Symptom oise oise is heard when the / system operates. Inspection procedure II: RTI 1. perate the / system and check the operation. Refer to -140, "escription & Inspection". 2. heck the parts where noise is occurring. an the parts where noise is occurring be checked? YS-1 >> oise from blower fan motor: T 2. YS-2 >> oise from compressor: T 3. YS-3 >> oise from expansion valve: T 4. YS-4 >> oise from / piping (pipe, flexible hose): T 6. YS-5 >> oise from / compressor belt: T 7. >> 2. WR TR 1. Remove blower fan motor. 2. Remove air conditioner filter. 3. Remove foreign materials that are in the blower unit. 4. heck the noise from blower fan motor again. YS >>. >> Replace blower fan motor. 3.R RSSR 1. orrect the refrigerant with R4. 2. Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant. 3. heck for the noise from compressor again. YS >>. >> Replace compressor. 4. WIT U RSSUR erform the diagnosis with the gauge pressure. Refer to -171, "SYT ISIS RUR : Trouble iagnosis or Unusual ressure" (R16/R20), -223, "SYT ISIS R- UR : Trouble iagnosis or Unusual ressure" (9) or -275, "SYT ISIS RUR : Trouble iagnosis or Unusual ressure" (9R). YS >> T 5. >> Repair or replace malfunctioning part(s). 5.R XSI VV 1. orrect the refrigerant with R4. 2. Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant. 3. heck for the noise from expansion valve again. re the symptoms solved? YS >>. >> Replace expansion valve. 6. / II (I, XI S) 1. heck / piping [pipe, flexible hose (for deformation and damage, etc.)]. -216

217 IS < SYT ISIS > [U IR ITIR] 2. heck the installation condition of clips and brackets, etc. of / piping (pipe, flexible hose). YS >> ix the line with rubber or come vibration absorbing material. >> Repair or replace parts according to the inspection results. 7. / RSSR T heck tension of the / compressor belt. Refer to -16, "hecking" (R16), -135, "hecking" (R20), -260, "Inspection and djustment" (9) or -352, "hecking" (9R). YS >> heck the noise from compressor: T 3. >> djust or replace the / compressor belt according to the inspection results. -217

218 RUTIS < RUTI > [U IR ITIR] RUTI RUTIS recaution for Supplemental Restraint System (SRS) "IR " and "ST T R-TSIR" II: The Supplemental Restraint System such as IR and ST T R-TSIR, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the SRS IR and ST T of this Service anual. WRI: To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized ISS/IIITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. or removal of Spiral able and ir ag odule, see the SRS IR. o not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service anual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. recaution ecessary for Steering Wheel Rotation fter attery isconnect II: T: This rocedure is applied only to models with Intelligent ey system and TS (ISS TI-TT SYS- T). Remove and install all control units after disconnecting both battery cables with the ignition knob in the position. lways use SUT-III to perform self-diagnosis as a part of each function inspection after finishing work. If T is detected, perform trouble diagnosis according to self-diagnostic results. or models equipped with the Intelligent ey system and TS, an electrically controlled steering lock mechanism is adopted on the key cylinder. or this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and steering wheel rotation will become impossible. If steering wheel rotation is required when battery power is interrupted, follow the procedure below before starting the repair operation. RTI RUR 1. onnect both battery cables. T: Supply power using jumper cables if battery is discharged. 2. Use the Intelligent ey or mechanical key to turn the ignition switch to the position. t this time, the steering lock will be released. 3. isconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated. 4. erform the necessary repair operation. 5. When the repair work is completed, return the ignition switch to the position before connecting the battery cables. (t this time, the steering lock mechanism will engage.) 6. erform a self-diagnosis check of all control units using SUT-III. -218

219 RUTIS < RUTI > [U IR ITIR] recaution for rocedure without owl Top over When performing the procedure after removing cowl top cover, cover the lower end of windshield with urethane, etc. II: Working with -134a (R-134a) II: UTI: -12 (R-12) refrigerant and -134a (R-134a) refrigerant are not compatible. These refrigerants must never be mixed, even in the smallest amounts. If the refrigerants are mixed and compressor malfunction is likely occur. Use only specified lubricant for the -134a (R-134a) / system and -134a (R-134a) components. If lubricant other than that specified is used, compressor malfunction is likely to occur. The specified -134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The following handling precautions must be observed: - When removing refrigerant components from a vehicle, immediately cap (seal) the component to minimize the entry of moisture from the atmosphere. - When installing refrigerant components to a vehicle, never remove the caps (unseal) until just before connecting the components. onnect all refrigerant loop components as quickly as possible to minimize the entry of moisture into system. - nly use the specified lubricant from a sealed container. Immediately reseal containers of lubricant. Without proper sealing, lubricant will become moisture saturated and should not be used. - ever allow lubricant (issan / System il Type S) to come in contact with styrene foam parts. amage may result. eneral Refrigerant recaution II: WRI: void breathing / refrigerant and lubricant vapor or mist. xposure may irritate eyes, nose and throat. Use only approved recovery/recycling equipment to discharge -134a (R-134a) refrigerant. If accidental system discharge occurs, ventilate work area before resuming service. dditional health and safety information may be obtained from refrigerant and lubricant manufacturers. ever release refrigerant into the air. Use approved recovery/recycling equipment to capture the refrigerant every time an air conditioning system is discharged. lways wear eye and hand protection (goggles and gloves) when working with any refrigerant or air conditioning system. ever store or heat refrigerant containers above 52 (126 ). ever heat a refrigerant container with an open flame; if container warming is required, place the bottom of the container in a warm pail of water. ever intentionally drop, puncture, or incinerate refrigerant containers. eep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns. Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent suffocation. ever pressure test or leak test -134a (R-134a) service equipment and/or vehicle air conditioning systems with compressed air during repair. Some mixtures of air and -134a (R-134a) have been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause injury or property damage. dditional health and safety information may be obtained from refrigerant manufacturers. Refrigerant onnection II3706 II: new type refrigerant connection has been introduced to all refrigerant lines except the following location. -219

220 RUTIS < RUTI > [U IR ITIR] xpansion valve to evaporator Refrigerant pressure sensor to liquid tank -RI RRIRT TI 1I eater sealing 2. xpansion valve 3. -ring 4. vaporator 5. ow pressure pipe 1 and high pressure 6. onnector pipe fixing bolt pipe 2 assembly 7. igh pressure pipe 1 8. ondenser assembly 9. ixing bolt 10. ompressor 11. eater & cooling unit assembly 12. eater & blower unit assembly 13. Refrigerant pressure sensor 14. iquid tank 15. ipe fixing bolt 16. ow pressure flexible hose 17. ow & high pipe bracket support 18. ow pressure flexible hose and pipe ipes fixing clip 20. ow pressure pipe 2 fixing clamp assembly 21. iquid tank fixing screw 22. iquid tank fixing bracket 23. igh pressure flexible hose UTI: The new and former refrigerant connections use different -ring configurations. ever confuse - rings since they are not interchangeable. If a wrong -ring is installed, refrigerant may leak at the connection. -Ring art umbers and Specifications -220

221 RUTIS < RUTI > [U IR ITIR] onnection type iping connection point art number QTY -ring size ew ow pressure pipe 2 to expansion valve igh pressure flexible pipe 1 to condenser igh pressure pipe 1 to expansion valve ow pressure pipe 1 and high pressure Inlet pipe 2 assembly to expansion valve utlet ow pressure pipe 1 and high pressure Inlet pipe 2 assembly to evaporator utlet igh pressure pipe 1 to liquid tank ompressor to low pressure flexible hose ompressor to high pressure flexible hose iquid tank to condenser WRI: ake sure all refrigerant is discharged into the recycling equipment and the pressure in the system is less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it. UTI: When replacing or cleaning refrigerant cycle components, observe the following. When the compressor is removed, store it in the same way at it is when mounted on the car. ailure to do so will cause lubricant to enter the low-pressure chamber. When connecting tubes, always use a torque wrench and a back-up wrench. fter disconnecting tubes, immediately plug all openings to prevent entry of dust and moisture. When installing an air conditioner in the vehicle, connect the pipes at the final stage of the operation. ever remove the seal caps of pipes and other components until just before required for connection. llow components stored in cool areas to warm to working area temperature before removing seal caps. This prevents condensation from forming inside / components. Thoroughly remove moisture from the refrigeration system before charging the refrigerant. lways replace used -rings. When connecting tube, apply lubricant to circle of the -rings shown in illustration. e careful not to apply lubricant to threaded portion. ame : issan / System il Type S -ring must be closely attached to the groove portion of tube. When replacing the -ring, be careful not to damage -ring and tube. onnect tube until a click can be heard, then tighten the nut or bolt by hand. ake sure that the - ring is installed to tube correctly. -221

222 RUTIS < RUTI > [U IR ITIR] fter connecting line, perform leak test and make sure that there is no leakage from connections. When the refrigerant leaking point is found, disconnect that line and replace the -ring. Then tighten connections of seal seat to the specified torque. R861 Service quipment II: RVRY/RYI QUIT e certain to follow the manufacturer s instructions for machine operation and machine maintenance. ever introduce any refrigerant other than that specified into the machine. TRI TTR e certain to follow the manufacturer s instructions for tester operation and tester maintenance. VUU U The lubricant contained inside the vacuum pump is not compatible with the specified lubricant for -134a (R-134a) / systems. The vent side of the vacuum pump is exposed to atmospheric pressure. So the vacuum pump lubricant may migrate out of the pump into the service hose. This is possible when the pump is switched off after evacuation (vacuuming) and hose is connected to it. To prevent this migration, use a manual valve placed near the hoseto-pump connection, as follows. Usually vacuum pumps have a manual isolator valve as part of the pump. lose this valve to isolate the service hose from the pump. or pumps without an isolator, use a hose equipped with a manual shut-off valve near the pump end. lose the valve to isolate the hose from the pump. If the hose has an automatic shut-off valve, disconnect the hose from the pump. s long as the hose is connected, the valve is open and lubricating oil may migrate. Some one-way valves open when vacuum is applied and close under no vacuum condition. Such valves may restrict the pump s ability to pull a deep vacuum and are not recommended. I U ST R

223 RUTIS < RUTI > [U IR ITIR] e certain that the gauge face indicates -134a or R-134a. e sure the gauge set has 1/2-16 threaded connections for service hoses. onfirm the set has been used only with refrigerant -134a (R-134a) and specified lubricants. SRVI SS e certain that the service hoses display the markings described (colored hose with black stripe). ll hoses must include positive shutoff devices (either manual or automatic) near the end of the hoses opposite to the manifold gauge. S533 SRVI URS ever attempt to connect -134a (R-134a) service couplers to a -12 (R-12) / system. The -134a (R-134a) couplers will not properly connect to the -12 (R-12) system. owever, if an improper connection is attempted, discharging and contamination may occur. R272 Shut-off valve rotation lockwise ounterclockwise / service valve pen lose RRIRT WIT S Verify that no refrigerant other than -134a (R-134a) and specified lubricants have been used with the scale. If the scale controls refrigerant flow electronically, the hose fitting must be 1/2-16. R273 RI YIR Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder s top valve when filling the cylinder with refrigerant. lso, the accuracy of the cylinder is generally less than that of an electronic scale or of quality recycle/recharge equipment. R

224 RSSR < RUTI > [U IR ITIR] RSSR eneral recautions II: UTI: lug all openings to prevent moisture and foreign matter from entering. When the compressor is removed, store it in the same way at it is when mounted on the car. When replacing or repairing compressor, follow aintenance of ubricant Quantity in ompressor exactly. Refer to -186, "djustment" (R16/R20) or -238, "djustment" (9). eep friction surfaces between clutch and pulley clean. If the surface is contaminated with lubricant, wipe it off by using a clean waste cloth moistened with thinner. fter compressor service operation, turn the compressor shaft by hand more than five turns in both directions. This will equally distribute lubricant inside the compressor. fter the compressor is installed, let the engine idle and operate the compressor for one hour. fter replacing the compressor magnet clutch, apply voltage to the new one and check for normal operation. -224

225 URST TTR < RUTI > [U IR ITIR] URST TTR eneral recautions UTI: II: The / system contains a fluorescent leak detection dye used for locating refrigerant leaks. n ultraviolet (UV) lamp is required to illuminate the dye when inspecting for leaks. lways wear fluorescence enhancing UV safety goggles to protect your eyes and enhance the visibility of the fluorescent dye. The fluorescent dye leak detector is not a replacement for an electrical leak detector (SST). The fluorescent dye leak detector should be used in conjunction with an electrical leak detector (SST) to pinpoint refrigerant leaks. or the purpose of safety and customer s satisfaction, read and follow all manufacture s operating instructions and precautions prior to performing the work. compressor shaft seal should not necessarily be repaired because of dye seepage. The compressor shaft seal should only be repaired after confirming the leak with an electrical leak detector (SST). lways remove any remaining dye from the leak area after repairs are completed to avoid a misdiagnosis during a future service. ever allow dye to come into contact with painted body panels or interior components. If dye is spilled, clean immediately with the approved dye cleaner. luorescent dye left on a surface for an extended period of time cannot be removed. ever spray the fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.). ever use more than one refrigerant dye bottle (1/4 ounce /7.4 cc) per / system. eak detection dyes for -134a (R-134a) and -12 (R-12) / systems are different. ever use -134a (R-134a) leak detection dye in -12 (R-12) / system, or -12 (R-12) leak detection dye in -134a (R-134a) / system, or / system damage may result. The fluorescent properties of the dye will remain for three years or a little over unless a compressor malfunction occurs. ITIITI T: Vehicles with factory installed fluorescent dye have a green label. Vehicles without factory installed fluorescent dye have a blue label. ITIITI R VI Vehicles with factory installed fluorescent dye have the identification label on the front side of hood. -225