Test H: The Brake Warning Indicator Is Never On

PINPOINT TEST H: THE BRAKE WARNING INDICATOR IS NEVER ON

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 (IC) is hardwired to the parking brake switch through circuit CCB09 (GY/BU) for parking brake status. The instrument cluster (IC) is hardwired to the 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 (IC) 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 (IC) a signal through the EBD line and the instrument cluster (IC) turns on the brake warning indicator.

- DTC C1226 (ABS Warning Lamp Output Circuit Short to Ground) - sets if the instrument cluster (IC) detects a short to ground on circuit CCA02 (GN/VT) during the instrument cluster (IC) initiation and bulb check.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Brake fluid level switch
- Parking brake switch
- ABS module
- Instrument cluster (IC)

H1-H3:

H3-H5:

H5-H9:

H9-H11: