2010 Cadillac CTS Sedan AWD V6-3.6L Page 371

2010 Cadillac CTS Sedan AWD V6-3.6L Page 371

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Memory Seats Description and Operation (See: Body and Frame/Seats/Description and Operation/Memory Seats)

Electrical Information Reference

* 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 Testing

1. Ignition OFF, disconnect the harness connector for all position sensors connected to the 5-volt reference circuit.

2. Ignition ON, observe all scan tool sensor parameters for Seat 1 and Column Info. The readings should be 0.0 volts.

瀚慖f 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.

* Seat horizontal position sensor terminal B X2

* Seat front vertical position sensor terminal B X2

* Seat rear vertical position sensor terminal B X2

* Recline position sensor terminal 2

* Lumbar horizontal position sensor terminal E

* Steering column telescope position sensor terminal D X2

* Steering column tilt position sensor terminal A X2

3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit at any one of the position sensors and ground.

瀚慖f less than the specified value, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the MSM.

瀚慖f greater than the specified value, test the 5-volt 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.

瀚慖f 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 Tilt Adjuster Actuator Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Front Seat Tilt Adjuster

Actuator Replacement)

* Front Seat Adjuster Actuator Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Front Seat Adjuster Actuator

Replacement)

* Driver Seat Outer Adjuster Rear Vertical Actuator Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Driver

Seat Outer Adjuster Rear Vertical Actuator Replacement)

* Seat Lumbar Sub System Replacement (without AHS) (See: Body and Frame/Seats/Service and Repair/Seat Lumbar Sub System

Replacement (Without AHS))Seat Lumbar Sub System Replacement (with AHS) (See: Body and Frame/Seats/Service and Repair/Seat

Lumbar Sub System Replacement (With AHS))

* Front Seat Recliner Actuator Motor Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Front Seat Recliner

Actuator Motor Replacement)

* Steering Column Tilt Wheel Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and

Suspension/Sensors and Switches - Steering/Tilt Wheel Sensor/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming