Parking Brake Warning Switch: Testing and Inspection

Parking Brake Switch Test

NOTE: If both the ABS/VSA indicator, the brake system indicator, and the trailer stability assist warning come on at the same time, check the VSA system first Reading and Clearing Diagnostic Trouble Codes.

1. Disconnect the parking brake switch connector (A) from the parking brake switch (B).





2. Check for continuity between the switch terminal (C) and body ground.

- With the parking brake pedal pressed, there should be continuity.
- With the parking brake pedal released, there should be no continuity.

NOTE: If the parking brake switch and the brake fluid level switch are OK, but the brake system indicator does not function, do the gauge control module self-diagnostic function Initial Inspection and Diagnostic Overview.

3. Reconnect the parking brake switch connector.