Brake Light Switch Functional Check

PROCEDURE

1. Depress the brake pedal and verify that the brake lights illuminate in the rear combination lamp assemblies.

2. If the brake lights do not illuminate, check the condition of the corresponding fuse (refer to Body Electrical Section). Also check the condition of the brake light bulb filaments in both rear combination lamps, and the high-mounted stop lamp bulb.

3. If the bulbs and fuse are good, locate the brake light switch mounted on the upper part of the brake pedal.

4. Disconnect the switch electrical connector.
5. Check continuity between terminals 2 and 3 of the connector. With the brake pedal depressed, there should be continuity; with the pedal released, there should be no continuity.
6. Also check continuity between terminals 1 and 4. The opposite result should occur: with the pedal depressed there should be no continuity, and vice versa.
7. If the checks fail, replace the brake light switch.