Brake Fluid Level Sensor/Switch: Testing and Inspection

- Check fluid level sensor switch using Digital Multimeter (DMM).

- Connect the two probes from the meter to the probes on the sensor switch.

NOTE: If the fluid level sensor switch is functioning properly, the meter should show an open circuit when the reservoir fluid level is full and a closed circuit when the reservoir fluid level is low.

- If any other conditions exist, replace the fluid level sensor.