A/C Control Signal Circuit

A/C CONTROL SIGNAL CIRCUIT

Diagnosis Procedure


1. SELF-DIAGNOSIS RESULT CHECK

With CONSULT
1.Perform the "SELF-DIAGNOSIS RESULTS" of HVAC.
2.Check if any DTC 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". Refer to
Without 7 Inch Display or Without 7 Inch Display.
Is any DTC 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 --> A/C AUTO AMP.) CIRCUIT CONTINUITY

1.Turn the ignition switch OFF.
2.Disconnect the A/C control and the A/C auto amp. connector.
3.Check continuity between A/C control harness connector and A/C auto amp. harness connector.





4.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. --> 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.