Clutch Switch: Description and Operation

Engine Control Components

Clutch Pedal Position (CPP) Switch

The CPP switch is an input to the PCM indicating the clutch pedal position. The PCM provides a low current voltage on the CPP circuit. When the CPP switch is closed, this voltage is pulled low through the SIG RTN circuit. The CPP input to the PCM is used to detect a reduction in engine load. The PCM uses the load information for mass air flow and fuel calculations.

Typical Clutch Pedal Position (CPP) Switch:

Typical Clutch Pedal Position (CPP) Switch