The clutch pedal switch is located on the clutch pedal assembly. It is a simple device that consists of a button that is pushed in when the clutch pedal is depressed. When the clutch pedal is released, the button pops out and the engine is allowed to start.
If the clutch pedal switch is faulty, it can prevent the car from starting, even if the clutch pedal is depressed. This is a serious safety issue, as it can make it impossible to start the car in an emergency.
If you suspect that your clutch pedal switch is faulty, you should have it checked out by a qualified mechanic as soon as possible.