Reference Information
Schematic Reference
* Driver Seat Schematics ()
* Adjustable Pedal Schematics (See: Accessories and Optional Equipment/Pedal Positioning System/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Memory Seats Description and Operation ()
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector for all position sensors connected to the 5 V reference circuit.
2. Ignition ON, observe all scan tool Driver Position Module sensor parameters in the Data Display screens listed below: The readings should be
0.0 V.
* Seat 1
* Adj. Pedals Info
* Column Info
锟斤拷 If greater than the specified value, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace
the MSM.
* Horizontal position sensor terminal 3 X2
* Front vertical position sensor terminal 1 X2
* Rear vertical position sensor terminal 5 X2
* Recline position sensor terminal 2
* Lumbar horizontal position sensor terminal D X2
* Lumbar vertical position sensor terminal B X2
* Adjustable pedal position sensor terminal 1
* Steering wheel tilt actuator/position sensor terminal C
3. Ignition ON, test for 4.8 - 5.2 V between the 5 V reference circuit at any one of the position sensors and ground.
锟斤拷 If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
锟斤拷 If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Connect each position sensor one at a time and verify that the DTC does not set as current.
锟斤拷 If the DTC sets as current, replace the appropriate position sensor.
5. If all circuits test normal, replace the MSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Front Seat Adjuster Replacement (with HP2) ()Front Seat Adjuster Replacement (without HP2) ()
* Seat Lumbar Sub System Replacement ()
* Front Seat Recliner Actuator Motor Replacement ()
* Brake and Accelerator Pedal Adjuster Position Sensor Replacement (With Memory Seats) (See: Accessories and Optional Equipment/Pedal
