2010 Cadillac Truck SRX FWD V6-3.0L Page 199

2010 Cadillac Truck SRX FWD V6-3.0L Page 199

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, vary the interior backlighting from dim to full bright by using the dimmer switch. The interior backlighting should dim and then

become full bright.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the S26 Hazard Lamps Switch.

2. Test for less than 5 ohm between the ground circuit terminal 1 and ground.

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

3. Connect a test lamp between the backlight control circuit of the S26 Hazard Lamps Switch terminal 5 and ground.

4. Ignition ON, vary the interior lamp dimming switch from dim to full bright. The test lamp should dim and then become full bright.

瀚慖f the test lamp cannot be dimmed, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 Body Control

Module.

瀚慖f the test lamp is always OFF, test the control circuit for open/high resistance or short to ground. If the circuit tests normal, replace the

K9 Body Control Module.

5. If all circuits test normal, replace the S26 Hazard Lamps Switch.

Repair Instructions

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

* Radio Control Assembly Replacement (See: Accessories and Optional Equipment/Radio, Stereo, and Compact Disc/Radio/Stereo/Service

and Repair/Radio Control Assembly Replacement)

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

Wiring Systems and Power Management

DTC B0978, B097B, or B097C

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 Descriptors

DTC B0978 01

- Power Mode Accessory Indicator Control Circuit Short to Battery

DTC B0978 02

- Power Mode Accessory Indicator Control Circuit Short to Ground

DTC B0978 04

- Power Mode Accessory Indicator Control Circuit Open

DTC B097B 00

- Power Mode Start Switch Circuit Malfunction

DTC B097B 02

- Power Mode Start Switch Circuit Short to Ground

DTC B097B 04

- Power Mode Start Switch Circuit Open