2010 Cadillac CTS Sedan AWD V6-3.6L Page 426
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, observe all scan tool Memory Seat Module seat switch parameters while pressing and releasing each seat directional switch. The
readings should change between Inactive and Active.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the seat adjuster switch.
2. Verify all scan tool seat switch parameters listed below are Inactive.
* Front Vertical Upward Switch
* Front Vertical Downward Switch
* Rear Vertical Upward Switch
* Rear Vertical Downward Switch
* Horizontal Forward Switch
* Horizontal Rearward Switch
* Recline Forward Switch
* Recline Rearward Switch
瀚慖f not the specified value, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace the
MSM.
* Front vertical upward switch terminal A (LHD)
* Front vertical upward switch terminal K (RHD)
* Front vertical downward switch terminal K (LHD)
* Front vertical downward switch terminal A (RHD)
* Rear vertical upward switch terminal F (LHD)
* Rear vertical upward switch terminal J (RHD)
* Rear vertical downward switch terminal J (LHD)
* Rear vertical downward switch terminal F (RHD)
* Horizontal forward switch terminal D
* Horizontal rearward switch terminal C
* Recline forward switch terminal H
* Recline rearward switch terminal G
3. If all circuits test normal, test or replace the seat adjuster switch.
Component Testing
1. Ignition OFF, disconnect the harness connector at the seat adjuster switch.
2. Test for infinite resistance between the B+ terminal E and each seat direction signal terminal with the switch in the open position.
瀚慖f not the specified value, replace the seat adjuster switch.
3. Test for less than 1 Ohms between the B+ terminal E and each seat direction signal terminal with the appropriate switch in the closed
position.
瀚慖f greater than the specified value, replace the seat adjuster switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Front Seat Adjuster Switch Replacement - Driver Side (AQ9) (See: Body and Frame/Seats/Power Seat Switch/Service and Repair/Front
Seat Adjuster Switch Replacement - Driver Side (AQ9))Front Seat Adjuster Switch Replacement - Driver Side (W2E) (See: Body and
Frame/Seats/Power Seat Switch/Service and Repair/Front Seat Adjuster Switch Replacement - Driver Side (W2E))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
