C0288

DTC C0288 Brake Warning Lamp Circuit Shorted To B+:

CIRCUIT DESCRIPTION
The red BRAKE warning lamp is supplied ignition voltage through the GAUGES fuse. The BRAKE warning lamp can be illuminated by the Electronic Brake Control Module (EBCM), Daytime Running Lights Module (DRL), Brake Pressure Warning Switch or by the Park Brake Switch.

CONDITIONS FOR SETTING THE DTC
- High voltage is present on the BRAKE warning lamp circuit when the circuit is expected to be low (lamp commanded on by the EBCM)
- Anything that keeps the Brake warning lamp circuit high when the lamp is supposed to be illuminated (such as a short to voltage on Circuit (CKT) 33)

ACTION TAKEN WHEN THE DTC SETS
No action taken, the ABS is not disabled.

CONDITIONS FOR CLEARING THE DTC
- Repair the conditions responsible for setting the DTC
- Use the Scan Tool Clear DTCs function

DIAGNOSTIC AIDS
DTC C0288 is usually set by a short to voltage in the wiring between the brake warning lamp and the EBCM.

TEST DESCRIPTION
The numbers below refer to the steps in the diagnostic table.
2. Determines if the BRAKE warning lamp circuit is operating properly when controlled by the EBCM (with diesel engines).
3. This step determines which variation of circuitry the vehicle is equipped.
4. This step determines if the BRAKE warning lamp circuit is operating properly without the EBCM (with diesel engines).
5. This step decides between a constant or intermittent short to voltage condition.
9. This step determines if the BRAKE warning lamp circuit is operating properly without the EBCM (with gas engines).
10. This step decides between a constant or intermittent short to voltage condition.