'06-09 model
The vehicle is equipped with a type IV immobilizer system 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, the imoes unit ('08-09 models), and the ECM.
'06-07 models
When the immobilizer key is inserted into the ignition switch and turned to ON (II), 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. The code is a rolling type embedded in the receiver instead of the ECM. A communication agreement with the HDS is required if the ECM is replaced.
When replacing the immobilizer control unit-receiver, all keys are required to be registered in to the new control unit-receiver with the HDS. Any keys that were not registered in the control unit-receiver will not start the vehicle.
'08-09 models
When the immobilizer key is inserted into the ignition switch and turned to ON (II), the immobilizer control unit-receiver sends power to the transponder in the ignition key. The transponder then sends a coded signal back to the immobilizer control unit-receiver which sends a coded signal to the imoes unit, which confirms the code and signals the ECM to supply power to the fuel pump circuit.
A communication agreement with the HDS is required if the ECM or the imoes unit is replaced.
When replacing the immobilizer control unit-receiver, all keys are required to be registered in to the new control unit-receiver with the HDS. Any keys that were not registered in the control unit-receiver will not start the vehicle.
- If the proper key has been used, the immobilizer indicator 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 reset correctly, then the indicator will go off.
- If the wrong key has been used or the code was not received or recognized by the unit, the indicator will come on for about 2 seconds, then it will blink until the ignition switch is turned OFF.
IMMOBILIZER INDICATOR BLINKING PATTERN: