B2530

DTC B2530

DTC Descriptor
DTC B2530 00
- Front Fog Lamp Control 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

Voltage is applied at all times to the fog lamp relay. When the fog lamp switch is placed in the ON position, ground is applied to the body control module (BCM) through the fog lamp switch circuit. The BCM then applies a ground to the front fog lamp control circuit. This engages the fog lamp relay and applies voltage through the fog lamp fuse to the front fog lamps.

Conditions for Running the DTC

The ignition is ON. Park lamps must be ON and the fog lamps must be commanded ON.

Conditions for Setting the DTC

The BCM detects a short to voltage on the front fog lamp control circuit while trying to apply a ground to the circuit.

Action Taken When the DTC Sets

The fog lamps do not illuminate.

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, turn the park lamps ON. Press the front fog lamp switch. The front fog lamps should illuminate.

Circuit/System Testing

1. Clear the DTC. Park lamp switch OFF, fog lamp switch OFF. Disconnect the fog lamp relay. Using a test lamp connected to ground, probe the fog lamp control circuit. Verify the test lamp illuminates.

• If the test lamp does not illuminate, replace the fog lamp relay.

2. Test for a short to voltage in the fog lamp control circuit.

• If all circuits/connections test normal, replace the BCM.

Repair Instructions

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

* Relay Replacement (Attached to Wire Harness) Relay Replacement (Within an Electrical Center)
* Programming and Relearning for BCM setup, and programming. Programming and Relearning