Control Module HVAC: Testing and Inspection

Check power supply circuit for auto amp. (LCU) with ignition switch ON.
1. Disconnect auto amp. (LCU) harness connector.
2. Connect voltmeter from harness side.
3. Measure voltage across terminal (26), (27), (33) and body ground.







Check body ground circuit for push control unit.
1. Disconnect push control unit harness connector.
2. Connect ohmmeter from harness side.
3. Check for continuity between terminal (32) and body ground.