2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 611

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 611

* 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.

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

* Right rear seat cushion terminal 6

* Right rear seat cushion terminal 2

6. If all circuits test normal, replace the RHSM.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Rear Seat Cushion Heater Replacement ()

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

programming

Dealer Installed

DTC B2508 or B2509 (Dealer Installed)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.