Anti-Theft System: Operation: PASSKey(R)

The PASSKey(R) system is designed to prevent the engine from starting if the proper resistance is not sensed from the ignition key. Of the 15 resistance values available, only one will work with each PASSKey(R) module.

The PASSKey(R) system prevents the engine from starting by controlling the starter enable relay and the PCM fuel enable input. If the PCM does not sense the proper signal on the fuel enable input, it will not provide fuel to the engine.

If the wrong resistance value is sensed when the ignition is turned on, the PASSKey(R) module will not ground the starter enable circuit and will not output the fuel enable signal for approximately three minutes. This prevents the engine from starting and discourages the thief from trying key codes (resistance values) at random.

If the correct resistance is sensed when the ignition is turned on, the PASSKey(R) module will ground the starter enable circuit and output the fuel enable signal. This will allow the engine to start normally.