B096A

DTC B096A

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B096A 01
- Hazard Lamps Switch Backlighting Circuit Short to Battery

DTC B096A 02
- Hazard Lamps Switch Backlighting Circuit Short to Ground

DTC B096A 04
- Hazard Lamps Switch Backlighting Circuit Open

Diagnostic Fault Information






Circuit/System Description

The instrument panel dimmer switch controls are located on the headlamp switch assembly and are used to increase and decrease the brightness of the interior backlighting components. When the instrument panel dimmer switch is placed in a desired brightness position, the body control module (BCM) receives a signal from the instrument panel dimmer switch and responds by applying a pulse width modulated (PWM) voltage to the hazard warning switch LED backlighting control circuit illuminating the LED to the desired level of brightness.

Conditions for Running the DTC

* Battery voltage must be between 9-16 V.

* Park lamps ON.

Conditions for Setting the DTC

DTC B096A 01

* The BCM detects an open/high resistance in the hazard warning switch LED backlighting control circuit.

* The BCM detects an open/high resistance in the hazard warning switch ground circuit.

DTC B096A 02

The BCM detects a short to ground in the hazard warning switch LED backlighting control circuit.

DTC B096A 04

* The BCM detects an open/high resistance in the hazard warning switch LED backlighting control circuit.

* The BCM detects an open/high resistance in the hazard warning switch ground circuit.

Actions Taken When the DTC Sets

The hazard warning switch LED backlighting will not illuminate.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.

* A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.

Reference Information

Schematic Reference

Exterior Lights Schematics Exterior Lights Schematics

Connector End View Reference

Component Connector End Views Sunshade - Left

Description and Operation

Interior Lighting Systems Description and Operation Interior Lighting Systems

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Testing

1. Ignition OFF, scan tool disconnected, all doors closed, all accessories OFF, disconnect the harness connector at the S48C multifunction switch 1 - instrument panel. It may take up to 2 minutes for all vehicle systems to power down.

2. Test for less than 15 ohms between the ground circuit terminal 7 and ground.

• If 15 ohms or greater

1. Ignition OFF.

2. Test for less than 2 ohms in the ground circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, repair the open/high resistance in the ground connection.

• If less than 15 ohms

3. Connect a test lamp between the control circuit terminal 5 and ground, ignition ON.

4. Verify the test lamp turns ON and OFF when commanding the Hazard Lamps Switch Backlight ON and OFF with a scan tool.

• If the test lamp is always OFF

1. Ignition OFF, disconnect the X1 harness connector at the K9 body control module.

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

• If less than infinite resistance, repair the short to ground on the circuit.

• If infinite resistance

3. Test for less than 2 ohms in the control circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the K9 body control module.

• If the test lamp is always ON

1. Ignition OFF, disconnect the X1 harness connector at the K9 body control module, ignition ON.

2. Test for less than 1 V between the control circuit terminal and ground.

• If 1 V or greater, repair the short to voltage on the circuit.

• If less than 1 V, replace the K9 body control module.

• If the test lamp turns ON and OFF

5. Test or replace the S48C multifunction switch 1 - instrument panel.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Instrument Panel Multifunction Switch Replacement (Traction Control) Instrument Panel Multifunction Switch Replacement (Traction Control)Instrument Panel Multifunction Switch Replacement (Park Assist) Instrument Panel Multifunction Switch Replacement (Park Assist)

* Control Module References Control Module References for BCM replacement, programming, and setup