Symptom Troubleshooting Using the Immobilizer Indicator Lighting Pattern

The pattern of the immobilizer indicator can help troubleshoot the condition of the immobilizer system. Here are descriptions of the four possible patterns:

Normal operation 

If the immobilizer code is identified, the immobilizer indicator quickly flashes once when the vehicle is turned to the ON mode.

The immobilizer indicator does not come on when the vehicle is turned to the OFF (LOCK) mode.

Immobilizer code is not identified 

If the immobilizer code is not identified, the immobilizer indicator will quickly flash once, then will blink until the vehicle is turned to the OFF (LOCK) mode. When the vehicle is turned to the OFF (LOCK) mode, the indicator will blink ten times, then go OFF to show the system is correctly reset.

The state of the immobilizer key registration and the S-NET line can be checked by doing a SYSTEM CHECK  with the HDS.

Immobilizer indicator does not come on 

If the immobilizer indicator does not come on after turning the vehicle is turned to the ON mode, there is an open or short in the F-CAN lines between the PCM and the gauge control module. Watch the malfunction indicator lamp (MIL). If the MIL stays on, go to PGM-FI system troubleshooting .

Immobilizer indicator does not go off 

If the immobilizer indicator does not go off after turning the vehicle is turned to the ON mode, do the gauge control module self-diagnostic function . If the indicator drive circuit is OK, do the SYSTEM CHECK  with the HDS.