2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 647

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 647

circuit.

Action Taken When the DTC Sets

The heated seat function for both seats will be disabled.

Conditions for Clearing the DTC

* The current DTC clears when the malfunction is no longer present and the power mode changes to OFF then back to ACC or RUN.

* The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.

Reference Information

Schematic Reference

Heated/Cooled Seat Schematics ()

Connector End View Reference

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

Description and Operation

Heated Seats Description and Operation (KA1) ()Heated Seats Description and Operation (KA6) ()

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 Verification

Verify the type of vehicle and the heated seat system for which the DTC set.

If the DTC set in the rear heated seat module, refer to Circuit/System Testing below.

If the DTC set in a vehicle equipped with memory, refer to DTC B2508 or B2509 (w/o HP2 with memory).

If the DTC set in a hybrid vehicle without memory, refer to DTC B2508 or B2509 (HP2 w/o memory).

If the DTC set in a non-hybrid vehicle without memory, refer to DTC B2508 or B2509 (Dealer installed).

Circuit/System Testing

1. Ignition OFF, disconnect the X1 harness connector at the RHSM.

2. Test for infinite resistance between the control circuit terminal 3 and ground.

瀚慖f not the specified value, test the control circuits listed below for a short to ground:

* Left rear seat cushion terminal 3

* Left rear seat cushion terminal 5

3. Test for infinite resistance between the control circuit terminal 6 and ground.

瀚慖f not the specified value, test the control circuits listed below for a short to ground:

* Right rear seat cushion terminal 6

* Right rear seat cushion terminal 2

4. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 3 and ground.

瀚慖f the test lamp illuminates, test the control circuits listed below for a short to voltage:

* Left rear seat cushion terminal 3

* Left rear seat cushion terminal 5

5. Verify that a test lamp does not illuminate between the control circuit terminal 6 and ground.