Immobilizer Control System Self-Diagnosis Function

ECM and keyless entry control module monitor each of the input and output signals of the immobilizer system, and they are equipped with a self-diagnosis function which displays DTC when an abnormal condition is detected.

Also, when an abnormal condition is detected, immobilizer indicator light blinks or lights up to warn the driver.

Conditions vary depending on the details of the abnormal condition, but the basic lighting patterns are as follows.