2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 619

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 619

* 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

B2530

DTC B2530

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.

DTC Descriptor

DTC B2530 00

- Front Fog Lamps Control Circuit

Diagnostic Fault Information

Circuit/System Description

The front fog lamp relay is supplied with battery voltage at all times. The front fog lamp switch signal circuit is grounded momentarily by pressing

the front fog lamp switch. The body control module (BCM) energizes the front fog lamp relay by applying ground to the front fog lamp relay

control circuit. When the front fog lamp relay is energized, the relay switch contacts close and battery voltage is applied through the FOG LAMP

fuse to the front fog lamp supply voltage circuit which illuminates the front fog lamps.

Conditions for Running the DTC

* Battery voltage must be between 9-16 V.

* Front fog lamps ON.

Conditions for Setting the DTC

The BCM detects a short to voltage in the front fog lamp relay control circuit for 5 seconds or greater.