How To Proceed With Troubleshooting

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

HINT
* Use these procedures to troubleshoot the engine immobilizer system.
* *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CRANK ENGINE FOR MORE THAN 10 SECONDS

NEXT -- Continue to next step.

3. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

(a) Using the Techstream, check if the Multiplex Communication System (MPX) is functioning normally Engine Immobilizer System.

Result:





B -- Go to MULTIPLEX COMMUNICATION SECTION
A -- Continue to next step.

4. CHECK FOR DTC*

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

(b) Delete the DTC.

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

Result:





B -- Go to SFI SYSTEM (2GR-FSE) SFI System

C -- Go to SFI SYSTEM (1UR-FSE) SFI System

D -- Go to DIAGNOSTIC TROUBLE CODE CHART Engine Immobilizer System
A -- Continue to next step.

5. PROBLEM SYMPTOMS TABLE

Result:





B -- Go to step 7
A -- Continue to next step.

6. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) DATA LIST/ACTIVE TEST Engine Immobilizer System

(b) Terminals of ECU Engine Immobilizer System

NEXT -- Continue to next step.

7. ADJUST, REPAIR OR REPLACE

NEXT -- Continue to next step.

8. CONFIRMATION TEST

NEXT -- END