Test H: The Brake Warning Indicator Is Never On

PINPOINT TEST H: THE BRAKE WARNING INDICATOR IS NEVER ON

H1-H4:

H4-H7:

H7-H10:

H11:

Normal Operation
The brake warning light is used to indicate low fluid level (base brake system concern) or a parking brake that is not fully released. The instrument cluster is hardwired to the parking brake switch through circuit CCB09 (GY/BU) for parking brake status. The instrument cluster is hardwired to the anti-lock brake system (ABS) module through the electronic brake distribution (EBD) line, circuit CCA02 (GN/VT), for brake fluid level concerns. When the parking brake is applied, the instrument cluster receives a ground and turns on the brake warning indicator. When brake fluid is low or the ABS module detects a base brake system concern, the ABS module sends the instrument cluster a signal through the EBD line and the instrument cluster turns on the brake warning indicator.

DTC C1226 - sets if the instrument cluster detects a short to ground on circuit CCA02 (GN/VT) and the instrument cluster turns on the brake warning indicator.

Possible Causes
- Circuit CCA02 (GN/VT) short to ground
- Circuit CCB09 (GY/BU) open
- Circuit GD121 (BK/YE) open
- Circuit GD175 (BK/BU) open
- Brake fluid level switch
- Parking brake switch
- ABS module
- Instrument cluster