System Description
The vehicle is equipped with an immobilizer system (type ill) that will disable the vehicle unless a programmed ignition key is used.
This system consists of a transponder located in the ignition key, an immobilizer control unit-receiver, an indicator light, and the PCM.
When a programmed key is inserted in the ignition switch and turned to the ON (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 PCM, and the PCM enables the fuel and ignition systems. The transponder codes are embedded in the immobilizer control unit-receiver (fixed code). A handshake between the PCM and the immobilizer control unit-receiver is required at the PCM repair and replacement, and all keys are required at the immobilizer control unit-receiver repair and replacement.
- If a programmed key has been used, the immobilizer indicator light will come on for about 2 seconds, then go off. When the ignition switch is turned OFF, the indicator will blink for about 5 seconds to signal that the unit has been set correctly, then the indicator will go off.
- If the a non-programmed key has been used whose code was not received or recognized by the unit, the indicator light will come on for about 2 seconds, then it will blink until the ignition switch is turned OFF.