Symptom Troubleshooting

Symptom Troubleshooting




1. Troubleshoot the immobilizer system by the order of the priority shown.

Immobilizer indicator blinks

NOTE: Before troubleshooting, check the items listed in "General Check before Troubleshooting".

1. Turn the ignition switch OFF.
2. Connect the HDS, then turn the ignition switch ON (II).
3. Enter the IMMOBILIZER, then select the IMMOBILIZER SETUP.
4. Select the SYSTEM CHECK.

Is the SYSTEM CHECK indicated?

YES - Troubleshoot the immobilizer system according to the result of the SYSTEM CHECK.

NO - Go to step 5.

5. Turn the ignition switch OFF.
6. Enter the vehicle, and remove the ignition key from the ignition switch, then close the all doors.
7. Operate the keyless transmitter LOCK and UNLOCK several times in the vehicle.

Do the door lock actuators work normally?

YES - Go to step 8.

NO - Check for a poor ground (G101) and/or an open in the wire between the immobilizer-keyless control unit 7P connector No. 7 terminal and body ground (G101)

8. Turn the ignition switch ON (II).




9. Check for voltage between the immobilizer-keyless control unit 7P connector No. 2 terminal and body ground.

Is there battery voltage?

YES - Go to step 10.

NO - Repair open in the YEL wire between the under-dash fuse-relay box and the immobilizer-keyless control unit.




10. Check for voltage between the immobilizer-keyless control unit 7P connector No. 7 terminal and body ground.

Is there 0.5 V or more?

YES - Repair poor connection or open between the immobilizer-keyless control unit 7P connector No, 7 terminal and G101.

NO - Replace the immobilizer-keyless control unit.

Engine does not start with the immobilizer key

NOTE: Before troubleshooting, check the items listed in "General Check before Troubleshooting" and "How to Troubleshoot".

1. Try to start the engine.

Does the engine start?

YES - Intermittent failure, the vehicle is OK at this time. Check status log.

NO - Go to step 2.

2. Turn the ignition switch OFF.
3. Turn the ignition switch ON (II), and check the immobilizer indicator indication.

Does the indicator come on for 2 seconds, then go off?

YES - Go to the immobilizer indicator blinks troubleshooting.

NO - Go to step 4.

4. Turn the ignition switch to START (III).

Does the starter motor run?

YES - Go to step 5.

NO - Go to Starting System and check the starter motor.

5. Try to start the engine with the immobilizer key.

Does the engine start?

YES - Go to step 6.

NO - Go to the PGM-FI System Symptom Troubleshooting (Powertrain Management/Fuel Delivery and Air Induction).

6. Wait for a few minutes with the engine running.

Does the engine stop?

YES - Go to the PGM-FI System Symptom Troubleshooting (Powertrain Management/Fuel Delivery and Air Induction).

NO - The system is OK at this time.

Immobilizer indicator does not go off

1. Turn the ignition switch OFF.
2. Connect the HDS to the data link connector.
3. Turn the ignition switch ON (II).
4. Enter the IMMOBILIZER, then select the IMMOBILIZER INFORMATION.
5. Do the SYSTEM CHECK with the HDS.

Is N-1 OK indicated?

YES - Replace the gauge control module.

NO - Substitute a known-good immobilizer-keyless control unit, then register it and recheck. If the symptom goes away, replace the original immobilizer-keyless control unit.