Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Pedal Position Sensor
The pedal position sensor is mounted on the power brake booster in the engine compartment. The sensor has several functions.
The sensor is used:
- by the engine control module (ECM) for cruise control. The signal is transmitted via the controller area network (CAN)
- to shut off traction control during braking (TRACS AWD only)
- to diagnose the function of the stop (brake) lamp switch (TRACS AWD only).
The sensor is affected by the push rod for the brake pedal. It is a sliding potentiometer.
Fault detection of the signal is between 0 V-0.15 V and 4.85 V-5.0 V. A diagnostic trouble code (DTC) is stored If the signal is between 0 V and 0.15 V. The sensor is considered not to be installed in the car. If the signal is between 4.85 V and 5.0 V, the sensor is understood to be pushed in excessively.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.