Immobilizer System Symptom Troubleshooting - Security indicator blinks (2/4-door)
NOTE: Before troubleshooting, check the items listed in General Check before Troubleshooting .
- Immobilizer system check
-1. Connect the HDS to the data link connector (DLC) .
-2. Turn the vehicle to the ON mode.
-3. From the SYSTEM SELECTION MENU, enter IMMOBI, then select IMMOBILIZER SETUP.
NOTE: If the HDS does not communicate with the immobilizer-keyless control unit, check the power, ground, and K line connections.
Immobilizer - Information/Record Data/History Data - Immobilizer Information
Select the SYSTEM CHECK from the IMMOBILIZER INFO.
Is SYSTEM CHECK indicated?
YES
Troubleshoot the immobilizer system according to the results of the SYSTEM CHECK .
NO
Go to step 2.
- Open wire check (GND line)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Enter the vehicle, and remove the ignition key from the ignition switch, then close all the doors.
-3. Operate the keyless transmitter LOCK and UNLOCK several times in the vehicle.
Do the door lock actuators work normally?
YES
The GND wire is OK. Go to step 3.
NO
Repair an open or high resistance in the ground wire or poor ground (G503).
- Open wire check (IG1 MON line)
-1. Turn the vehicle to the ON mode.
-2. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Test point 1 Immobilizer-keyless control unit 7P connector No. 6 Test point 2 Body ground Is there battery voltage?
YES
The IG1 MON wire is OK. Replace the immobilizer-keyless control unit .
NO
Repair an open or high resistance in the wire.