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DTC B096F

DTC B096F

Diagnostic Instructions


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

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

• Diagnostic Procedure Instructions has overviews of all diagnostic categories.


DTC Descriptors

DTC B096F 01

Power Mode Switch Assembly Backlight Circuit Short to Battery

DTC B096F 02

Power Mode Switch Assembly Backlight Circuit Short to Ground

DTC B096F 04

Power Mode Switch Assembly Backlight Circuit Open

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Power Mode Switch Assembly Backlight Control

B096F 02

B096F 04

B096F 01

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Circuit/System Description

The body control module (BCM) supplies a pulse width modulated (PWM) voltage to the LED circuit of the power mode for backlight.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The BCM detects a short to voltage, short to ground, or an open in the PWM circuit for the power mode switch backlight LED circuit.

Action Taken When the DTC Sets

The BCM will not illuminate the LED backlighting supplied by the backlight lamp control circuit.

Conditions for Clearing the DTC


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

• A history DTC will clear once 100 consecutive malfunction ignition cycles have occurred.


Reference Information

Schematic Reference

Exterior Lights Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Interior Lighting Systems Description and Operation

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


Scan Tool Reference

Control Module References for information on diagnostic tools

Circuit/System Verification

Open the drivers door and observe the power mode switch. The power mode switch backlight should be illuminated.

Circuit/System Testing


1. Disconnect the harness connector at the S38 Ignition Mode Switch.

2. Test for less than 5 Ω between the ground circuit terminal 4 and ground.

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

4. Connect a test lamp between the backlight control circuit of S38 Ignition Mode Switch terminal 8 and ground.

5. Close the driver's door and wait 30 seconds. Open the driver's door and check that the test lamp blinks.

6. If the test lamp does not flash, test the control circuit for an open circuit/high resistance or short to ground. If the circuit tests normal, replace the K9 Body Control Module.

7. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 Body Control Module.

8. If all circuits test normal, replace the S38 Ignition Mode Switch.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


• Ignition and Start Switch Replacement

• Control Module References for information on BCM replacement, setup, and programming