Brake Fluid Level Sensor/Switch: Testing and Inspection

ON-VEHICLE INSPECTION

INSPECT BRAKE FLUID LEVEL WARNING SWITCH

a. Remove the reservoir tank cap and strainer.
b. Disconnect the connector.
c. Measure the resistance between the terminals.
Standard: Float up (switch off): 10 kOhms or higher

d. Use a syphon, etc. to take fluid out of the reservoir tank.
e. Measure the resistance between the terminals.
Standard: Float down (switch on): Below 1 Ohm

f. Pour the fluid back in the reservoir tank.
g. Reconnect the connector.