Power Mirror Malfunction
Power Mirror Malfunction
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 Sunshade - Left (D61)
Description and Operation
Outside Mirror Description and Operation Outside Mirror
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
Circuit/System Verification
1. Verify that both outside rearview mirrors operate while commanding the outside rearview mirrors UP/DOWN and LEFT/RIGHT with the outside mirror directional switch.
• If the outside rearview mirrors do not move up/down or left/right
Refer to Circuit/System Testing.
• If the outside rearview mirrors move up/down and left/right
2. All OK.
Circuit/System Testing
1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S52 Outside Rearview Mirror Switch. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 5 and ground.
• If 10 ohms or greater
1. Ignition OFF.
2. Test for less than 2 ohms in the ground circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, repair the open/high resistance in the ground connection.
• If less than 10 ohms
3. Verify a test lamp illuminates between the B+ circuit terminal 4 and ground.
• If the test lamp does not illuminate and the circuit fuse is good
1. Ignition OFF.
2. Test for less than 2 ohms in the B+ circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.
• If the test lamp does not illuminate and the circuit fuse is open
1. Ignition OFF.
2. Test for infinite resistance between the B+ circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for infinite resistance between each of the control circuit terminals listed below and ground:
* Terminal 1 control circuit
* Terminal 2 control circuit
* Terminal 3 control circuit
* Terminal 7 control circuit
* Terminal 8 control circuit
* Terminal 9 control circuit
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance, replace the S52 Outside Rearview Mirror Switch.
• If the test lamp illuminates
4. Ignition OFF, connect the harness connector at the S52 Outside Rearview Mirror Switch and disconnect the harness connector at the appropriate A9 Outside Rearview Mirror.
5. Connect a test lamp between the control circuit terminal A and the control circuit terminal B.
6. Verify the test lamp illuminates when commanding the UP/DOWN states with the S52 Outside Rearview Mirror Switch.
• If the test lamp does not illuminate during either of the commands
1. Ignition OFF, disconnect the harness connector at the S52 Outside Rearview Mirror Switch.
2. Test for less than 1 V on each control circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V
3. Test for infinite resistance between each control circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
4. Test for less than 2 ohms in each control circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace at the S52 Outside Rearview Mirror Switch.
• If the test lamp illuminates during each of the commands
7. Connect a test lamp between the control circuit terminal A and the control circuit terminal C.
8. Verify the test lamp illuminates when commanding the LEFT/RIGHT states with the S52 Outside Rearview Mirror Switch.
• If the test lamp does not illuminate during either of the commands
1. Ignition OFF, disconnect the harness connector at the S52 Outside Rearview Mirror Switch.
2. Test for less than 1 V on each control circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V
3. Test for infinite resistance between each control circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
4. Test for less than 2 ohms in each control circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace at the S52 Outside Rearview Mirror Switch.
• If the test lamp illuminates during each of the commands
9. Test or replace the Outside Rearview Mirror Inner Actuator.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Outside Remote Control Rearview Mirror Switch Replacement Service and Repair
* Outside Rearview Mirror Inner Actuator Replacement Outside Rearview Mirror Inner Actuator Replacement