Power Mirrors Inoperative (w/o AN3, DL3)
Power Mirrors Inoperative (w/o AN3, DL3)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.
Diagnostic Fault Information
Circuit/System Description
The outside rearview mirror switch controls the outside rearview mirrors based on the position of the mirror selector switch and which movement position is selected. The outside rearview mirror switch has four positions: up, down, left, and right. B+ is applied to the switch and when a movement position switch is selected, B+ is sent to the mirror via a motor control circuit. The opposite motor control circuit acts as a ground circuit for the bi-directional mirror motor.
Reference Information
Schematic Reference
Outside Rearview Mirror Schematics (Outside Rearview Mirror Schematics)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Outside Mirror Description and Operation (Heated Mirrors) (Outside Mirror (Heated Mirrors))Outside Mirror Description and Operation (Power Mirrors) (Outside Mirror (Power Mirrors))
Electrical Information Reference
* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
Scan Tool References
Control Module References (Programming and Relearning) for scan tool information.
Circuit/System Verification
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.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the power mirror switch.
2. Test for less than 10 ohms between and the ground circuit terminal G and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Verify that a test lamp illuminates between the B+ circuit terminal B 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 power mirror switch.
5. Disconnect the harness connector at the appropriate outside rearview mirror.
6. Connect a test lamp between the control circuit terminal 1 and the control circuit terminal 6.
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 power mirror switch.
8. Connect a test lamp between the control circuit terminal 2 and the control circuit terminal 6.
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 power mirror switch.
10. If all circuits test normal, test or replace the outside rearview mirror motor.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Outside Rearview Mirror Motor Replacement (Service and Repair)
* Power Mirror Switch Replacement (with DL8 and without SLT) (Service and Repair)