DeVille Concours V8-4.6L VIN 9 (1994)
Alarm Module: Description and Operation
PASS-Key
PURPOSE
The Personal Automotive Security System (PASS-Key) is designed to disable vehicle operation if the incorrect key or starting procedure is used.
OPERATION
The PASS-Key decoder module sends a signal to the Powertrain Control Module (PCM), on circuit 229, if the correct key is being used. If the
proper signal does not reach the PCM, it will not pulse the fuel injectors "ON" and thus not allow the vehicle to start.
Passkey II Schematic (Typical)
