Vision V6-3.5L VIN F (1997)
Brake Fluid Level Sensor/Switch: Description and Operation
Master Cylinder Reservoir Level Sensor
PURPOSE
The purpose of the brake fluid level sensor is to provide the driver with early warning that brake fluid in the master cylinder is below a normal
level. The brake fluid level sensor used on this vehicle's master cylinder is internal to the master cylinder fluid reservoir. The vehicle wiring
harness has a connector which plugs directly into the brake fluid reservoir.
OPERATION
As the fluid drops below the design level the sensor closes the Red Brake Warning Light circuit. This will turn on the red brake warning light. At
this time, the master cylinder fluid reservoir should be checked and filled to the full mark with DOT 3 brake fluid. If the brake fluid level has
dropped in the master cylinder fluid reservoir, the entire brake hydraulic system should be checked for evidence of a leak. The brake fluid level
sensor in the master cylinder brake fluid reservoir is not a repairable item. If the level sensor is found to be defective the brake fluid reservoir must
be replaced.
