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REAR A/C CONTROL COMMUNICATION SIGNAL HAC-127 < DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING] C D E F G H J K L M A B HAC N O P REAR A/C CONTROL COMMUNICATION SIGNAL Diagnosis Procedure INFOID:0000000006275975 1. CHECK COMMUNICATION SIGNAL CIRCUIT (A/C AUTO AMP. → REAR A/C CONTROL) FOR OPEN 1. Turn ignition switch OFF. 2. Disconnect rear A/C control and A/C auto amp. connector. 3. Check continuity between rear A/C control harness connector and A/C auto amp. harness connector. Is the inspection result normal? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK COMMUNICATION SIGNAL CIRCUIT (A/C AUTO AMP. → REAR A/C CONTROL) FOR SHORT Check continuity between rear A/C control harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair harness or connector. 3. CHECK COMMUNICATION SIGNAL CIRCUIT (REAR A/C CONTROL → A/C AUTO AMP.) CIRCUIT FOR OPEN Check continuity between rear A/C control harness connector and A/C auto amp. harness connector. Is the inspection result normal? YES >> GO TO 4. NO >> Repair harness or connector. 4. CHECK COMMUNICATION SIGNAL CIRCUIT (REAR A/C CONTROL → A/C AUTO AMP.) CIRCUIT FOR SHORT Check continuity between rear A/C control harness connector and ground. Is the inspection result normal? YES >> Replace A/C auto amp.. Refer to HAC-146, "Removal and Installation" NO >> Repair harness or connector. Rear A/C control A/C auto amp. Continuity Connector Terminal Connector Terminal M41 9 M50 11
Existed Rear A/C control — Continuity Connector Terminal M41 9 Ground Not existed Rear A/C control A/C auto amp. Continuity Connector Terminal Connector Terminal M41 10 M50 31
Existed Rear A/C control — Continuity Connector Terminal M41 10 Ground Not existed |