Ignition Input
WARNING: This page is about a different car, the 1990 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.
The ignition input is used to turn the module on. When the module is turned on, it will read the ignition key resistor and control the outputs accordingly. When the module is turned off the ignition key resistor is not read and the starter enable relay and fuel enable output will not allow the engine to start. When the ignition is turned off, the battery input to the PASS Key module will draw about 1 milli-amp.