Grand Cherokee 4WD L6-242 4.0L VIN S MFI (1993)
Pedal Travel Sensor: Description and Operation
The pedal travel sensor signals brake pedal position to the Controller. The sensor signal is based on changes in electrical resistance. The resistance
changes occur in the steps generated by changes in brake pedal position. A resistance signal generated by changing brake pedal position will cause the
CAB to run the antilock pump when necessary.
The sensor is a plunger type, electrical switch mounted in the forward housing of the power brake booster. The sensor plunger is actuated by movement
of the booster diaphragm plate.
The tip on the sensor plunger is color coded. The tip must be matched to the color dot on the face of the brake booster front shell.
