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.
Clutch Pedal Switch (Manual Transmissions Only)
The purpose of the clutch pedal switch is to give the engine control module (ECM) information about the position of the clutch pedal. The clutch pedal switch directly connected to the engine control module (ECM).
Because the communication on the HS-CAN can temporarily fail during the starting sequence two information sources are used for the clutch pedal position. This is to prevent interference during starts. The engine control module (ECM) also receives information about the clutch pedal position via the central electronic module (CEM). See also DESIGN AND FUNCTION, CENTRAL ELECTRONIC MODULE (CEM) .
The clutch pedal switch is open in its original position (clutch pedal not depressed) and is supplied with voltage from the start control module (SCU) (terminal 30). When the clutch pedal is depressed more than 75% the switch closes and a high signal (12 V) is transmitted to the engine control module (ECM).
The engine control module (ECM) can diagnose the clutch pedal switch and the status (position) can be read off using the diagnostic tool.
The clutch pedal switch is located on the pedal box by the clutch pedal.
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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.
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