Power Mirror Control Module: Testing and Inspection

INSPECTION OF MIRROR ECU
1. INSPECT MIRROR ECU CIRCUIT
Disconnect the connectors from the ECU and inspect the connector on the wire harness side as shown in the chart below.






2. INSPECT MIRROR ECU OPERATION
Connect the connectors and using a voltmeter with high impedance (10 k Ohms per volt minimum), measure the voltage at each terminal and body ground.






Troubleshooting
You will find the cause of trouble more easily by properly using the table shown below. In this table, the numbers indicate the order of priority of the causes of trouble. Check each part in the order shown. If necessary, replace the part.






CHART