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.