Brake Fluid Level Sensor/Switch: Testing and Inspection

Service Information

Brake Fluid Level Switch Test

Test

1. Brake Fluid Level Switch - Test





NOTE: If the ABS indicator or the AHB indicator, and the brake system indicator come on at the same time, check the advanced hydraulic booster system for DTCs first, then check the VSA system.

1. Disconnect the brake fluid level switch connector.

2. Check for continuity between the terminals (1) and (2) with the float in the down position and in the up position.

* Remove the brake fluid completely from the subreservoir. With the float down, there should be continuity.
* Fill the subreservoir with brake fluid to the MAX (upper) level (A). With the float up, 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.

3. Reconnect the brake fluid level switch connector.