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Alarm Module: Description and Operation

Pass-KeyII Fuel Enable Circuit:

Purpose:
The Personal Automotive Security System (PASS-KEYII) is designed to disable vehicle operation if the incorrect key or starting procedure is used.

Operation:
The PASS-KEY II decoder module sends a signal to the 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.