B2625

DTC B2625

DTC Descriptor
DTC B2625 00
- Display Dimming Pulse Width Modulation (PWM) Output Circuit

Diagnostic Fault Information

Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview






Circuit/System Description

When the interior lamps dimming switch is activated, a variable voltage signal is applied through the instrument panel lamps dimmer switch signal circuit to the body control module (BCM). The BCM then applies a variable voltage signal through the LED indicator dimming supply circuit to the following components:

* Front parking display
* Heated seat switches
* HVAC control heads

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The BCM receives a ground signal on the LED indicator dimming supply circuit.

Action Taken When the DTC Sets

The BCM cease attempt to dim or illuminate the LED indicator lamps.

Conditions for Clearing the DTC

The BCM clears this code from current when the fault is removed from the system.

Circuit/System Verification

Ignition ON, cover the ambient light sensor, vary the interior lamp dimming switch from dim to full bright. The LED lamps should dim and then become full bright.

Circuit/System Testing

1. Disconnect all the LED indicator dimming supply circuit lamps related components. Refer to the circuit/system verification for all components that contain the LED indicator dimming supply circuit lamps. Verify DTC B2625 does not set.

• If the DTC resets, then test for a short to ground in the LED indicator dimming supply circuit lamps circuit. If the circuit/connections test normal, replace the BCM.

2. Reconnect each component one at a time and test for the DTC B2625. If the DTC resets, then replace that component.

Repair Instructions

Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.

* Chime Inoperative
* Steering Wheel Control Switch Assembly Replacement
* HVAC Control Assembly Replacement - Auxiliary
* Programming and Relearning for BCM setup, and programming. Programming and Relearning