Stoplight Switch Testing
WARNING: This page is about a different car, the 1995 Suzuki Sidekick. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect stoplight switch connector. Connect ohmmeter across stoplight switch terminals. With brake pedal depressed, continuity should exist. With brake pedal released, continuity should not exist. If continuity is not as specified, replace stop light switch.