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HAC-138 < SYMPTOM DIAGNOSIS > [AUTOMATIC AIR CONDITIONING] INSUFFICIENT COOLING INSUFFICIENT COOLING FRONT AUTOMATIC AIR CONDITIONING SYSTEM FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Description INFOID:0000000009652584 Symptom • Insufficient cooling FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Diagnosis Procedure INFOID:0000000009652585 NOTE: 1. CHECK MAGNET CLUTCH OPERATION 1. Turn ignition switch ON. 2. Operate fan switch. 3. Press A/C switch. 4. Check that A/C indicator turns ON. Check visually and by sound that compressor operates. 5. Press A/C switch again. 6. Check that A/C indicator turns OFF. Check that compressor stops. Is the inspection result normal? YES >> GO TO 2. NO >> Perform diagnosis of “COMPRESSOR DOES NOT OPERATE” in “SYMPTOM DIAGNOSIS”. HAC-142, "Diagnosis Procedure" 2. CHECK DRIVE BELT Check tension of drive belt. Refer to Is the inspection result normal? YES >> GO TO 3. NO >> Adjust or replace drive belt depending on the inspection results. 3. CHECK REFRIGERANT CYCLE PRESSURE Connect recovery/recycling recharging equipment to the vehicle and perform pressure inspection with gauge. . Is the inspection result normal? YES >> GO TO 4. NO >> Repair or replace parts depending on the inspection results. 4. CHECK AIR LEAKAGE FROM EACH DUCT Check duct and nozzle, etc. of the air conditioning system for leakage. Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace parts depending on the inspection results. 5. CHECK AMBIENT TEMPERATURE DISPLAY Check that there is not much difference between actual ambient temperature and indicated temperature on Is the inspection result normal? YES >> GO TO 6. NO >> Perform diagnosis for the A/C auto amp. connection recognition signal circuit. Refer to 6. CHECK SETTING OF TEMPERATURE SETTING TRIMMER (FRONT) |