Brake Pedal Position Sensor Calibration

BRAKE PEDAL POSITION SENSOR CALIBRATION

CALIBRATION CRITERIA

The brake pedal position sensor (BPPS) receives a low reference signal and a 10-volt reference signal from the body control module (BCM). Whenever the brake pedal is applied, the BPPS applies a variable voltage signal to the BCM through the stop lamp switch signal circuit. BPPS calibration must be performed after the BPPS or BCM have been serviced. The calibration procedure will set the BPPS home value. This value is used by the BCM to determine the action of the driver applying the brake system and to provide this information to the vehicle subsystems via the class 2 communication bus.

CALIBRATION PROCEDURE

IMPORTANT: If the master brake cylinder has been replaced, verify that the correct pushrod is installed before attempting to calibrate the BPPS.

1. Turn ON the ignition, with the engine OFF.
2. Install a scan tool. Select the proper vehicle and options.
3. Navigate to the BCM menu.
4. Select Special Functions menu item.
5. Select the BPPS calibration procedure and follow the directions displayed on the screen.