Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Front Fog Lamps Control | B2530 02 | B2530 04 | B2530 01 | -- |
The front fog lamp relay is supplied with battery voltage at all times. The front fog lamp switch signal circuit is grounded momentarily by pressing the front fog lamp switch. The body control module (BCM) energizes the front fog lamp relay by applying ground to the front fog lamp relay control circuit. When the front fog lamp relay is energized, the relay switch contacts close and battery voltage is applied through the front fog lamp fuse to the front fog lamp supply voltage circuit which illuminates the front fog lamps.
Front fog lamps activated
The BCM detects a short to voltage on the control circuit.
The BCM detects a short to ground on the control circuit.
The BCM detects an open control circuit.
The condition for setting the DTC is no longer present.
Exterior Lighting Systems Description and Operation
Control Module References for scan tool information
Ignition ON, perform the Front Fog Lamps Relay Command test. The front fog lamps should be ON / OFF
⇒ | If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K9 Body Control Module (BCM). |
⇒ | If the test lamp is always OFF, test the control circuit for a short to voltage or an open / high resistance. If the circuit tests normal, replace the K9 Body Control Module (BCM). |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for BCM replacement, setup and programming |