ENGINE IMMOBILISER SYSTEM(w/ Entry and Start System) HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use these procedures to troubleshoot the engine immobiliser system.

  • *: Using the intelligent tester.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. INSPECT BATTERY VOLTAGE

    Standard Voltage
    11 to 14 V

    If the voltage is below 11 V, recharge or replace the battery before proceeding.

    Result
    Proceed to
    NEXT

    NEXT

  3. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*


    1. Use the intelligent tester to check if the LIN communication system is functioning normally.

      Result
      Result Proceed to
      ECU is connected, communication line is normal A
      ECU is connected, communication line is malfunctioning B

    B

    GO TO LIN COMMUNICATION SYSTEM Click here

    A

  4. CHECK FOR DTC*


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

      Click here

    2. Clear the DTCs.

      Click here

    3. Recheck for DTCs Click here. Based on the DTCs output above, try to cause the output of the same ECD system, steering lock system DTC or engine immobiliser system DTC by reproducing the symptoms indicated by the DTC.

      Result
      Result Proceed to
      DTC is not output A
      ECD system (for 1WW) DTC is output B
      ECD system (for 2WW) DTC is output C
      Steering lock system DTC is output D
      Engine immobiliser system DTC is output E

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    C

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    D

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    E

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  5. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table.

      Click here

      Result
      Result Proceed to
      Fault is not listed in problem symptoms table A
      Fault is listed in problem symptoms table B

    B

    GO TO STEP 7 Click here

    A

  6. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Data List/Active Test.

      Click here

    2. Terminals of ECU.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  7. ADJUST, REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  8. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END