Immobilizer System Symptom Troubleshooting - Security indicator blinks
Security indicator blinks
NOTE: Before troubleshooting, check the items listed in General Check before Troubleshooting.

1.
Immobilizer system check:

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.

  

?4.
Select the SYSTEM CHECK from the IMMOBILIZER INFO.

Is SYSTEM CHECK indicated?

     
YES
     
     
     
     
NO
     
     
     
Go to step 2.
2.
Open wire check (GND line):

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).?
3.
Open wire check (IG1 MON line):

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
     
     
     
     
NO
     
     
     
Repair an open or high resistance in the wire.?