Brake Fluid Level Sensor/Switch: Testing and Inspection

Brake Fluid Level Switch Test

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.
NOTE:

- 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.

- 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 DTC's first, Initial Inspection and Diagnostic Overview then check the ABS or VSA: ABS, VSA. Service and Repair

- If the parking brake switch and the fluid level switches 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 brake fluid level switch connector.