Engine Immobiliser System (W-O Entry And Start System) - How To Proceed With Troubleshooting

1. Vehicle brought to workshop

2. Crank engine for more than 10 seconds

3. Check for dtcs

4. Read value on intelligent tester

5. Problem symptoms table

6. Overall analysis and troubleshooting

7. Adjust, repair or replace

8. Confirmation test

​

HINT:

Use this procedure to troubleshoot the engine immobiliser system.

The intelligent tester should be used in steps 3, 4, and 6.

NEXT

NEXT

1. Check for DTCs and note any codes that are output.

2. Delete the DTCs.

3. Recheck for DTCs. Try to duplicate the DTC (SFI system and engine immobiliser system) by simulating the symptoms indicated by the DTC.

   1. If the DTC does not reoccur, proceed to A.

   2. If the DTC (SFI system) reoccurs, proceed to B.

   3. If the DTC (engine immobiliser system) reoccurs, proceed to C.

B.	GO TO SFI SYSTEM
C.	GO TO DTC CHART
A

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch to the ON position and turn the intelligent tester on.

3. Read the DATA LIST according to the display on the tester.
   

   IMMOBILISER:

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Key SW	Unlock warning switch signal/ON or OFF	ON: Key is in ignition key cylinder OFF: No key is in ignition key cylinder	-

   OK:

   ON (Key is in ignition key cylinder) appears on the screen.
   

NG.	GO TO DTC B2780
OK

1. If the fault is not listed on the problem symptoms table, proceed to A.

2. If the fault is listed on the problem symptoms table, proceed to B.

B.	GO TO STEP 7
A

1. Inspection with the intelligent tester (DATA LIST).

2. Inspection with the intelligent tester (ACTIVE TEST).

3. TERMINALS OF ECU (Click here).

NEXT

NEXT

NEXT
END