Rear A/C Control Communication Signal

REAR A/C CONTROL COMMUNICATION SIGNAL

Diagnosis Procedure

REAR A/C CONTROL) FOR OPEN

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.
REAR A/C CONTROL) FOR SHORT

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.
A/C AUTO AMP.) CIRCUIT FOR

3. CHECK COMMUNICATION SIGNAL CIRCUIT (REAR A/C CONTROL -> A/C AUTO AMP.) CIRCUIT FOR OPEN

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.
A/C AUTO AMP.) CIRCUIT FOR

4. CHECK COMMUNICATION SIGNAL CIRCUIT (REAR A/C CONTROL -> A/C AUTO AMP.) CIRCUIT FOR SHORT

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 "Removal and Installation" Service and Repair.
NO- Repair harness or connector.