Diagnostic Instructions
Circuit/System Description
The outside mirror switch and passenger window switch are on a serial data circuit with the memory seat module as the master. The mirror select and directional control switches are inputs to the memory seat module through the serial data circuit. When the memory seat module receives switch inputs from the outside mirror switch, mirror output commands are sent to the appropriate switch through the serial data circuit. The outside mirror switch and passenger window switch control the left and right outside rear view mirrors through bidirectional motor control circuits. The motor control circuits are floating while in an inactive state and the switches will apply power and ground to the control circuits as necessary to move the mirror in the commanded direction.
Mirror position is determined by both horizontal and vertical position sensors in each of the power mirrors. The outside mirror switch 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 memory recall command, the memory seat module will send the go to position commands to the outside mirror switch and passenger window switch. The switches will then drive the appropriate mirror motors to the commanded position sensor settings.
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 (Encore), Outside Rearview Mirror Schematics (Trax)
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - TRAX
Description and Operation
Outside Mirror Description and Operation (DG6/DL6 or DI7), Outside Mirror Description and Operation (AAG)
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Refer to Power Mirror Malfunction (DG6, DL6 or DI7), Power Mirror Malfunction (AAG).
Refer to Power Mirror Malfunction (DG6, DL6 or DI7), Power Mirror Malfunction (AAG).
Circuit/System Testing
Replace the K40 Seat Memory Control Module
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for the seat memory control module replacement, programming and setup