Immobilizer Control Unit

The immobilizer control unit is below the dashboard, on the left side of the steeling column. When the ignition switch is turned on, the control unit sends power to the transponder through the immobilizer receiver. When the control unit receives the ID code from the transponder, it compares it with the one in its memory.





If the codes match, the control unit sends an enable signal to the ECM and connects the starter circuit. If the codes do not match, the control unit disables the starter circuit, and does not send an enable signal to the ECM. The control unit can accept up to five keys (not including the learning key).