Power Mirror Control Module: Testing and Inspection

MIRROR ECU INSPECTION

1. INSPECT ECU CIRCUIT
Wire Harness Side:
Disconnect the connectors from the ECU and inspect the connector on the wire harness side, as shown in the chart below.
If circuit is not as specified, inspect the wire harness and mirror switch or motor assembly.








2. INSPECT ECU OPERATION
Connector Connected:
Connect the connectors and using a voltmeter with high impedance (10 kOhms/V minimum), measure the voltage at each terminal and body ground.
If operation is not as specified, inspect the wire harness and mirror switch or motor assembly. Then if these are correct, replace the ECU.