Brake Warning Indicator: Testing and Inspection

Brake Lamp Warning Circuit
Diagnostic Aids
The BRAKE lamp glows brightly when the ignition is ON and either the parking brake lever switch or the brake fluid level switch is closed. If neither switch is closed, the BRAKE lamp receives a ground through the generator, and it glows dimly when the ignition is ON and the engine is off. When the engine starts, the generator creates voltage. With voltage on both sides of the lamp, the lamp turns off.

Test Description
The numbers refer to steps in the diagnostic table.
1. This step begins the test sequence for a BRAKE warning lamp that stays on when the engine is running.

Steps 1-12:

Steps 12 (continued)-28:

Step 29:

2. This step begins the test sequence for a BRAKE warning lamp that never turns on.