How To Proceed With Troubleshooting

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
Use this procedure to troubleshoot the engine immobiliser system.

Techstream should be used in steps 4, 5 and 7.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK

NEXT -- Continue to next step.

3. CRANK ENGINE FOR MORE THAN 10 SECONDS

NEXT -- Continue to next step.

4. CHECK FOR DTCS

(a) Check for DTCs and note any codes that are output.

(b) Delete the DTC.

(c) Recheck for DTCs. Based on the DTC output, try to force output of the same SFI system DTC or engine immobiliser system DTC by simulating the operation indicated by the DTC.

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

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

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

B -- Go to SFI SYSTEM

C -- Go to step 8
A -- Continue to next step.

5. READ VALUE OF TECHSTREAM

(a) Connect Techstream to the DLC3.

(b) Turn the ignition switch ON.

(c) Turn the tester on.

(d) Select the following menu items: Body Electrical / Immobiliser / Data List.

(e) Read the Data List according to the display on the tester.

Immobiliser:





OK:

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

NG -- Go to DTC B2780
OK -- Continue to next step.

6. PROBLEM SYMPTOMS TABLE

(a) If the fault is not listed on the problem symptoms table, proceed to A.

(b) If the fault is listed on the problem symptoms table, proceed to B.

B -- Go to step 8
A -- Continue to next step.

7. OVERALL ANALYSIS AND TROUBLESHOOTING

(a) DATA LIST/ACTIVE TEST Engine Immobiliser System

(b) TERMINALS OF ECU Engine Immobiliser System

NEXT -- Continue to next step.

8. ADJUST, REPAIR OR REPLACE

NEXT -- Continue to next step.

9. CONFIRMATION TEST

NEXT -- END