Power Mirror Tilt Inoperative in Reverse
Power Mirror Tilt Inoperative in Reverse
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.
Circuit/System Description
Mirror position is determined by both horizontal and vertical position sensors in each of the power mirrors. The mirror control module and passenger window switch supply a 5 V reference, low reference, and horizontal and vertical position signal circuits to these sensors. The signal circuits are referenced from 5 V by the switches and the signal circuit voltage levels represent the mirror positions. The mirror positions are sent to the memory seat module through the serial data circuit where they are stored for memory mirror operation. When the memory seat module receives a park tilt mirror in reverse command, the memory seat module will send the tilt down command to the mirror control module and the passenger window switch. The mirror control module and the passenger window switch will then drive the appropriate mirror motors to the commanded position.
Diagnostic Aids
The Park Tilt Mirror in Reverse is a feature in the Personalization Menu of the audio system controls that allows the operator to program the driver and/or passenger outside rearview mirrors to tilt downward when the vehicle is shifted into R (reverse). Verify that this feature has been correctly programmed into the system before performing extensive diagnostics
Reference Information
Schematic Reference
Outside Rearview Mirror Schematics Outside Rearview Mirror Schematics
Connector End View Reference
Component Connector End Views Sunshade - Left
Description and Operation
Outside Mirror Description and Operation (with A45) Outside Mirror Description and Operation (with 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
1. Ignition ON.
2. Verify the A9A Outside Rearview Mirror-Driver moves when commanding the Driver Mirror Horizontal Movement Right/Left and Driver Mirror Vertical Movement Up/Down with a scan tool.
• If the A9A Outside Rearview Mirror-Driver does not move RIGHT or LEFT or UP or DOWN
Refer to Power Mirror Malfunction (without A45) Power Mirror Malfunction (without A45)Power Mirror Malfunction (With A45) Power Mirror Malfunction (With A45).
• If the A9A Outside Rearview Mirror-Driver moves RIGHT, LEFT, UP and DOWN
3. Verify the A9B Outside Rearview Mirror-Passenger moves when commanding the Passenger Mirror Horizontal Movement Right/Left and Passenger Mirror Vertical Movement Up/Down with a scan tool.
• If the A9B Outside Rearview Mirror-Passenger does not move RIGHT or LEFT or UP or DOWN
Refer to Power Mirror Malfunction (without A45) Power Mirror Malfunction (without A45)Power Mirror Malfunction (With A45) Power Mirror Malfunction (With A45).
• If the A9B Outside Rearview Mirror-Passenger moves RIGHT, LEFT, UP and DOWN
4. All OK.
Circuit/System Testing
1. Engine running, shift the vehicle in REVERSE.
2. Verify that the appropriate A9 Outside Rearview Mirror moves DOWN.
• If the A9 Outside Rearview Mirror does not move DOWN
Replace the K40 Seat Memory Control Module
• If the A9 Outside Rearview Mirror does move DOWN
3. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
Control Module References Control Module References for the seat memory control module replacement, programming and setup