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HAC-120 < SYMPTOM DIAGNOSIS > [AUTOMATIC AIR CONDITIONER] INSUFFICIENT COOLING NO >> Go to appropriate malfunctioning sensor circuit. Refer to HAC-44, "WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description" (Without left and right ventilation temperature separately control system) or AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis (With left and right ventilation temperature separately control system), see No. 11. 6. PERFORM SELF-DIAGNOSIS STEP-4 Perform self-diagnosis STEP-4. Refer to HAC-44, "WITHOUT LEFT AND RIGHT VENTILATION TEMPERA- TURE SEPARATELY CONTROL SYSTEM : Diagnosis Description" (Without left and right ventilation tempera- ture separately control system) or HAC-50, "WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description" (With left and right ventilation temperature sepa- rately control system), see No.1 to 5. YES >> GO TO 7. NO >> Perform the diagnosis applicable to each output device. 7. PERFORM SELF-DIAGNOSIS STEP-5 Perform self-diagnosis STEP-5. Refer to HAC-44, "WITHOUT LEFT AND RIGHT VENTILATION TEMPERA- TURE SEPARATELY CONTROL SYSTEM : Diagnosis Description" (Without left and right ventilation tempera- ture separately control system) or HAC-50, "WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description" (With left and right ventilation temperature sepa- rately control system), see No.1 to 10. YES >> GO TO 8. NO >> Go to appropriate malfunctioning sensor circuit. Refer to HAC-44, "WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description" (Without left and right ventilation temperature separately control system) or AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis (With left and right ventilation temperature separately control system). 8. CHECK A/C COMPRESSOR BELT Check the A/C compressor belt. Refer to Is the inspection result normal? YES >> GO TO 9. NO >> Adjust or replace the A/C compressor belt. 9. CHECK AIR LEAKAGE FROM DUCT Check duct and nozzle, etc. of A/C system for air leakage. Is the inspection result normal? YES >> GO TO 10. NO >> Repair or replace parts according to the inspection results. 10. CHECK POWER SUPPLY FOR ECV (ELECTRIC CONTROL VALVE) 1. Disconnect compressor (ECV) connector. 2. Turn ignition switch ON. 3. Check voltage between compressor (ECV) harness connector F43 terminal 2 and ground. Is the inspection result normal? YES >> GO TO 12. NO >> GO TO 11. 11. CHECK FUSE (+) ( − ) Voltage Compressor (ECV) — Connector Terminal F43 2 Ground Battery voltage |