Clutch Interlock Switch
WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
The clutch interlock switch prevents engine starter operation and inadvertent vehicle movement with the clutch pedal in the up position (not depressed), or under normal conditions with the clutch engaged and the transaxle in gear.
WARNING:
WHEN THERE IS A LOSS OF CLUTCH SYSTEM HYDRAULIC FLUID, OR THE CLUTCH MASTER CYLINDER PUSHROD IS DISCONNECTED FROM THE PEDAL LEVER, THE ENGINE MAY START WITH THE CLUTCH ENGAGED, CAUSING UNDESIRABLE VEHICLE MOVEMENT IF THE TRANSAXLE IS IN ANY GEAR.
The switch is open while the clutch pedal is at rest (up position). When the clutch pedal is fully depressed, the pedal lever (LHD), or the master cylinder push rod (RHD), closes the switch, completing the signal circuit from the PCM and closing the ground path, allowing engine starter operation. The interlock switch is not adjustable.