Power Mirror Malfunction (without A45)
Power Mirror Malfunction (without A45)
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 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.
Reference Information
Schematic Reference
Outside Rearview Mirror Schematics Outside Rearview Mirror Schematics
Connector End View Reference
Component Connector End Views Connector End Views By Name
Description and Operation
Outside Mirror Description and Operation (w/A45) Outside Mirror (w/A45)Outside Mirror Description and Operation (without A45) Outside Mirror (without A45)
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 Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
Ignition ON, verify with the mirror directional switch that both the DRIVER and PASSENGER mirrors operate UP, DOWN, LEFT, and RIGHT.
If none of the functions work, refer to No Mirror Functions Operate Test.
If one or more of the functions work, but not all of the functions, refer to Not All Mirror Functions Operate Test.
Circuit/System Testing
No Mirror Functions Operate Test
1. Ignition OFF, disconnect the harness connector at the S52 outside rearview mirror switch.
2. Wait 1 minute, test for less than 10 Ohms between the ground circuit terminal 5 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 4 and ground.
• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, connect the connector at the S52 outside rearview mirror switch and refer to Not All Mirror Functions Operate Test.
Not All Mirror Functions Operate Test
1. Ignition OFF, disconnect the harness connector at the appropriate A9 outside mirror.
2. Connect a test lamp between the control circuit terminal 2 and the control circuit terminal 8.
3. 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 both control circuits. If the circuits test normal, replace the S52 outside mirror switch.
4. Connect a test lamp between the control circuit terminal 7 and the control circuit terminal 8.
5. 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 both control circuits. If the circuits test normal, replace the S52 outside mirror switch.
6. If all circuits test normal, test or replace the A9 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
* Outside Remote Control Rearview Mirror Switch Replacement Service and Repair