The outside rearview mirror switch receives battery voltage from the 5A MIR fuse located in the underhood fuse block. The outside rearview mirror switch receives a constant ground. The 4 positions of the direction switch have multiple switch contacts. When not in use, the directional contacts are isolated from any circuit. Each of the contacts are connected to opposing sides of the appropriate mirror motors through the selector switch. The selector switch interrupts or completes these circuits depending on the position of the selector switch, L or R. If the mirror select switch is placed in the L position and the up switch is pressed, battery voltage will be supplied to the driver outside mirror vertical motor through the driver mirror motor up control circuit and return to the mirror switch through the driver mirror motor left/down control circuit, then to ground and the mirror will move up. If the down switch is pressed, the driver mirror motor left/down control circuit supplies battery voltage and the driver mirror motor up control circuit completes the path to the mirror switch, then to ground and the mirror will move down. The remainder of the mirror functions operate in the same manner as described above. Placing the mirror control switch in opposing positions, left/right or up/down, will reverse the voltage polarity to the mirror motor, utilizing the same circuits and the mirror will move accordingly.

Schematic Reference

Outside Rearview 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. Ignition ON, with the mirror selector switch in the DRIVER position, command the mirrors UP, DOWN, LEFT, and RIGHT using the mirror directional switch. The driver mirror should move in the commanded direction.
2. Ignition ON, with the mirror selector switch in the PASSENGER position, command the mirrors UP, DOWN, LEFT, and RIGHT using the mirror directional switch. The passenger mirror should move in the commanded direction.

1. Ignition OFF, disconnect the harness connector at the outside rearview mirror switch.
2. Verify that a test lamp illuminates between B+ and the ground circuit terminal B.

⇒	If the test lamp does not illuminate, test the ground circuit for an open/high resistance.

3. Verify that a test lamp illuminates between the B+ circuit terminal G and ground.

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

4. Connect the harness connector at the outside rearview mirror switch.
5. Disconnect the harness connector at the appropriate outside rearview mirror.
6. Mirror select switch in the appropriate mirror position, test for infinite resistance between the listed control circuit terminals and ground.

•	Horizontal control terminal 1

•	Vertical control terminal 3

•	Common control terminal 2

⇒	If less than the specified range, test the appropriate control circuit for a short to ground. If the circuits test normal, replace the power mirror switch.

7. Connect a test lamp between the control circuit terminal 1 and the control circuit terminal 2.
8. 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 an open/high resistance on the control circuits. If the circuits test normal, replace the front side door window switch.

9. Connect a test lamp between the control circuit terminal 3 and the control circuit terminal 2.
10. 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 an open/high resistance on the control circuits. If the circuits test normal, replace the power mirror switch.

11. If all circuits test normal, test or replace the outside rearview mirror motor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.