Volt

Power Mirror Malfunction

The outside wing mirror switch controls the outside wing mirrors based on the position of the mirror selector switch and which movement position is selected. The outside wing mirror switch has four positions: up, down, left, and right. B+ is applied to the switch from the power mirror fuse and when a movement position switch is selected, voltage is sent to the commanded mirror via a mirror control circuit. The opposite mirror control circuit acts as a ground circuit for the bi-directional mirror motor. Ground is the applied through the switch.

Schematic Reference

Outside Wing Mirror Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Outside Mirror Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. Vehicle in Service Mode, with the mirror selector switch in the DRIVER position, command the mirrors UP, DOWN, LEFT, and RIGHT using the mirror directional switch. The A9A driver outside wing mirror should move in the commanded direction.
2. With the mirror selector switch in the PASSENGER position, command the mirrors UP, DOWN, LEFT, and RIGHT using the mirror directional switch. The A9B passenger outside wing mirror should move in the commanded direction.

1. Vehicle OFF, disconnect the harness connector at the S52 outside mirror switch.
2. Wait 1 minute, test for less than 10 Ω between the ground circuit terminal 11 and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

3. Vehicle in Service Mode, verify that a test lamp illuminates between the B+ circuit terminal 12 and ground.

⇒	If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

4. Vehicle OFF, connect the harness connector at the S52 outside mirror switch.
5. Disconnect the harness connector at the appropriate A9 outside rearview mirror.
6. Connect a test lamp between the control circuit terminal H and the control circuit terminal B.
7. Operate the vertical switch UP and DOWN. The test lamp should turn ON when commanding the UP and DOWN states.

⇒	If the test lamp remains OFF during either of the commands, test for a short to voltage, short to ground, or an open/high resistance on the control circuits. If the circuits test normal, replace the S52 outside mirror switch.

8. Connect a test lamp between the control circuit terminal H and the control circuit terminal G.
9. Operate the horizontal switch LEFT and RIGHT. The test lamp should turn ON when commanding the LEFT and RIGHT states.

⇒	If the test lamp remains OFF during either of the commands, test for a short to voltage, short to ground, or an open/high resistance on the control circuits. If the circuits test normal, replace the S52 outside mirror switch.

10. If all circuits test normal, test or replace the A9 outside wing mirror.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.