Power Mirror Malfunction (with DL6 or DS3, Except W49)
Power Mirror Malfunction (with DL6 or DS3, except W49)
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 PWR/MIR fuse in the IP fuse block and when a movement position switch is selected, voltage is sent to the commanded mirror via a mirror control control. 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 A/C Compressor Clutch
Description and Operation
Outside Mirror Description and Operation (Power Mirrors) Outside Mirror (Power Mirrors)Outside Mirror Description and Operation (Heated Mirrors) Outside Mirror (Heated 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
Circuit/System Verification
1. Verify the mirror glass of the A9A Outside Rearview Mirror-Driver and the A9B Outside Rearview Mirror-Passenger move UP, DOWN, LEFT and RIGHT with the S52 Outside Rearview Mirror Switch.
• If both outside mirror glasses do not move
Refer to Circuit/System Testing - Both Outside Rearview Mirrors Inoperative.
• If the driver outside mirror glass does not move UP, DOWN, LEFT or RIGHT
Refer to Circuit/System Testing - Driver Outside Mirror Movement Malfunction.
• If the passenger outside mirror glass does not move UP, DOWN, LEFT or RIGHT
Refer to Circuit/System Testing - Passenger Outside Mirror Movement Malfunction.
• If the mirror glass of the A9A Outside Rearview Mirror-Driver and the A9B Outside Rearview Mirror-Passenger move UP, DOWN, LEFT and RIGHT
2. All OK.
Circuit/System Testing
Both Outside Rearview Mirrors Inoperative
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 G 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 B 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:
* Control circuit terminal C
* Control circuit terminal D
* Control circuit terminal F
* Control circuit terminal H
* Control circuit terminal J
* Control circuit terminal K
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance, replace the A9 Outside Rearview Mirror.
• If the test lamp illuminates
4. Test or replace the S52 Outside Rearview Mirror Switch.
Driver Outside Mirror Movement Malfunction
1. Ignition OFF, disconnect the harness connector at the A9A Outside Rearview Mirror-Driver. Ignition ON
2. Connect a test lamp between the control circuit terminal 1 and control circuit terminal 6.
3. Verify the test lamp turns ON when commanding the UP and DOWN states with the S52 Outside Rearview Mirror Switch.
• If the test lamp remains OFF during either of the commands
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch.
2. 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
3. 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, test or replace the S52 Outside Rearview Mirror Switch.
• If the test lamp is always ON
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch, ignition ON.
2. Test for less than 1 V between each control circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, test or replace the S52 Outside Rearview Mirror Switch
• If the test lamp turns ON during each of the commands
4. Connect a test lamp between the control circuit terminal 2 and control circuit terminal 6.
5. Verify the test lamp turns ON when commanding the LEFT and RIGHT states with the S52 Outside Rearview Mirror Switch.
• If the test lamp remains OFF during either of the commands
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch.
2. 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
3. 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, test or replace the S52 Outside Rearview Mirror Switch.
• If the test lamp is always ON
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch, ignition ON.
2. Test for less than 1 V between each control circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, test or replace the S52 Outside Rearview Mirror Switch
• If the test lamp turns ON during each of the commands
6. Test or replace the A9A Outside Rearview Mirror-Driver.
Passenger Outside Mirror Movement Malfunction
1. Ignition OFF, disconnect the harness connector at the A9B Outside Rearview Mirror-Passenger. Ignition ON
2. Connect a test lamp between the control circuit terminal 1 and control circuit terminal 6.
3. Verify the test lamp turns ON when commanding the UP and DOWN states with the S52 Outside Rearview Mirror Switch.
• If the test lamp remains OFF during either of the commands
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch.
2. 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
3. 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, test or replace the S52 Outside Rearview Mirror Switch.
• If the test lamp is always ON
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch, ignition ON.
2. Test for less than 1 V between each control circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, test or replace the S52 Outside Rearview Mirror Switch
• If the test lamp turns ON during each of the commands
4. Connect a test lamp between the control circuit terminal 2 and control circuit terminal 6.
5. Verify the test lamp turns ON when commanding the LEFT and RIGHT states with the S52 Outside Rearview Mirror Switch.
• If the test lamp remains OFF during either of the commands
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch.
2. 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
3. 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, test or replace the S52 Outside Rearview Mirror Switch.
• If the test lamp is always ON
1. Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch, ignition ON.
2. Test for less than 1 V between each control circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, test or replace the S52 Outside Rearview Mirror Switch
• If the test lamp turns ON during each of the commands
6. Test or replace the A9B Outside Rearview Mirror-Passenger.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Outside Rearview Mirror Motor Replacement Service and Repair
* Outside Remote Control Rearview Mirror Switch Replacement (Traverse) Service and Repair