Brake Fluid Level Sensor/Switch: Testing and Inspection

INSPECT BRAKE WARNING LIGHT
a. Disconnect the connector from the brake fluid warning switch.
b. Release the parking brake pedal.
c. Connect terminals on the wire harness side of the level warning switch connector.
d. Start the engine and check that the warning light lights up. If the warning light does not light up, test the LED.




INSPECT BRAKE FLUID LEVEL WARNING SWITCH
a. Disconnect the connector.
b. Check that no continuity exists between terminals with the switch OFF (float up).
c. Use syphon, etc. to take fluid out of the reservoir tank.
d. Check that continuity exists between terminals with the switch ON (float down).
e. Pour the fluid back in reservoir tank.
If operation is not as specified, replace the reservoir tank.