Cherokee 4WD LHD L6-4.0L VIN S (2001)
Brake Fluid Pressure Sensor/Switch: Description and Operation
BRAKE PRESSURE SWITCH
DESCRIPTION
The brake pressure switch is connected to the brake warning light. The switch is actuated by movement of the switch valve. The switch monitors fluid
pressure in the separate front/rear brake hydraulic circuits and is located in the combination valve.
OPERATION
A decrease or loss of fluid pressure in either hydraulic circuit will cause the switch valve to shuttle to the low pressure side. Movement of the valve
pushes the switch plunger upward. This action closes the switch internal contacts completing the electrical circuit to the red warning light. The switch
valve will remain in an actuated position until repairs to the brake system are made.