Immobilizer System: General Description: Notes

The immobilizer system consists of the four major components which are Engine Control Module (ECM), Immobilizer Control Unit (ICU), transponder, and scan tool (Tech-2).

This system can be activated by a correctly programmed transponder and starter switch is set to OFF.

This system can be deactivated by a correctly programmed transponder key connected with a correctly programmed ECM and a correctly programmed ICU.

While the system is on:

The starter cut off relay deactivates function of starter, and the fuel injector power source is deactivated also.