Rear A/C Control Communication Signal

REAR A/C CONTROL COMMUNICATION SIGNAL





Diagnosis Procedure
1.CHECK COMMUNICATION SIGNAL CIRCUIT (A/C AUTO AMP. to 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. to 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 to 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 to 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.. Service and Repair.
NO - Repair harness or connector.