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 only found in vehicles with the adaptive cruise control function. It is mounted on the brake servo in the engine compartment. The sensor, which is a slide potentiometer, is actuated by the brake pedal's pushrod. The sensor is supplied 5 V. The signal is linear and should be between 0.15 and 4.85 V, with voltage corresponding to the position of the brake pedal. The engine control module (ECM) uses the signal for the cruise control function. The signal is transmitted via CAN.
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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.