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 I/P 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 I/P dimmer switch is placed in a desired brightness position, the body control module (BCM) receives a signal from the I/P dimmer switch and responds by applying a pulse width modulated (PWM) voltage to the hazard switch light emitting diode (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 switch LED backlighting control circuit.
* The BCM detects an open/high resistance in the hazard switch ground circuit.

DTC B096A 02

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

DTC B096A 04
* The BCM detects an open/high resistance in the hazard switch LED backlighting control circuit.
* The BCM detects an open/high resistance in the hazard switch ground circuit.

Actions Taken When the DTC Sets

The hazard 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 (D6I)
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, disconnect the harness connector at the S26 hazard lamps switch.
2. Ignition OFF, scan tool disconnected, all doors closed, all accessories OFF, and wait 2 minutes. Test for less than 5 ohm between the ground circuit terminal 3 and ground.

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

3. Connect a test lamp between the control circuit terminal 2 and ground.
4. Ignition ON, command the Hazard Lamps Switch Backlight ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.

• If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
• If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.

5. If all circuits test normal, replace the S26 hazard lamps switch.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Hazard Warning Switch Replacement Service and Repair
* Control Module References Control Module References for BCM replacement, setup, and programming