Immobilizer System Description

The vehicle is equipped with an immobilizer system (Type III) that will disable the vehicle unless the proper ignition key is used.
This system consists of a transponder located in the ignition key, an immobilizer control unit-receiver, an indicator light, the multiplex control unit, and the ECM/PCM.

When the key is inserted in the ignition switch and turned to the (II) position, the immobilizer control unit-receiver sends power to the transponder in the ignition key. The transponder then sends a coded signal back through the immobilizer control unit-receiver to the ECM/PCM. The ECM/PCM then energizes the fuel supply system.