Brake Warning Light

The brake warning light receives battery voltage with the Ignition Switch (X134) in position II. It is grounded by the Brake Fluid Level Switch (X111) when the brake fluid level is low. It may also be grounded through the Brake Fluid Level Switch (X111) and the brake fluid level switch diode when the Handbrake Switch (X191) is closed. The warning light is also grounded by the Anti-Lock Brake System ECU (Z108) or by the ABS Pressure Switch Unit (Z104) in the event of an ABS system problem.