Immobilizer System Symptom Troubleshooting Information

Symptom Troubleshooting by the Immobilizer Indicator Lighting Pattern


Immobilizer system condition can be checked by the immobilizer indicator lighting pattern.

Normal operation

If the immobilizer code is identified, the immobilizer indicator comes on for about 0.2 seconds, then goes off after turning the ignition switch ON (II).
The immobilizer indicator does not come on when the ignition switch is turned OFF.

Immobilizer code is not identified

If the immobilizer code is identified, the immobilizer indicator comes on for 2 seconds, then blinks after turning the ignition switch ON (II).
The immobilizer indicator blinks ten times, then goes off when the ignition switch is turned OFF.

Immobilizer indicator does not come on

If the immobilizer indicator does not come on after turning the ignition switch ON (II), an open or short in the F-CAN lines between the ECM and the gauge control module (tach). Watch the malfunction indicator lamp (MIL). If the MIL stays on, go to the PGM-FI system troubleshooting.

Immobilizer indicator does not go off

If the immobilizer indicator does not go off after turning the ignition switch ON (II), do the gauge control module (tach) self-diagnostic function. If the indicator drive circuit is OK, make sure the SYSTEM CHECK with the HDS.

Symptom Troubleshooting of an open Power Supply and Ground Circuit


If a malfunction occurs in the immobilizer circuit for the +B, IG and GND (LG) lines, identify the lines to check with this table.

 

General Check before Troubleshooting


Before troubleshooting the immobilizer system, check the following general points and solve any if applicable.


How to Troubleshoot


1.Do the PGM-FI system DTCs check. If there is any DTC, go to the indicated DTC troubleshooting.

2.Do the Body Electrical DTCs check. If there is any DTC, go to the indicated DTC troubleshooting.