A/C Control Signal Circuit

A/C CONTROL SIGNAL CIRCUIT


Diagnosis Procedure

1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform "SELF-DIAGNOSIS RESULTS" of HVAC.
2. Check if any DTC No. is displayed in the self-diagnosis results.

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Without 7 Inch Display or Without 7 Inch Display.
Is any DTC No. displayed?
YES - Perform the diagnosis that is applicable to the sensor and actuator. Testing and Inspection.
NO - GO TO 2.
2.CHECK TX (A/C CONTROL to A/C AUTO AMP.) CIRCUIT CONTINUITY
1. Disconnect the A/C control and the A/C auto amp. connector.
2. Check continuity between A/C control harness connector and A/C auto amp. harness connector.





3. Check continuity between A/C control harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair harness or connector.
3.CHECK RX (A/C AUTO AMP. to A/C CONTROL) CIRCUIT CONTINUITY
1. Disconnect the A/C control and the A/C auto amp. connector.
2. Check continuity between A/C control harness connector and A/C auto amp. harness connector.





3. Check continuity between A/C control harness connector and ground.





Is the inspection result normal?
YES - Perform trouble diagnosis for the A/C control. A/C Control.
NO - Repair harness or connector.