Clutch Switch: Description and Operation

The Clutch Anticipate Switch input allows the PCM/TAC to adjust the idle when the manual transmission clutch is being disengaged. The PCM monitors the Clutch Anticipate Switch input; if a low voltage is monitored, the PCM considers the Clutch Anticipate Switch closed to ground (clutch pedal released). When the ground at the Clutch Anticipate Switch input is interrupted (clutch pedal applied), the PCM will immediately decrease idles. This is done to avoid a possible RPM flare caused by the sudden change in engine load.