ENGINE IMMOBILISER SYSTEM

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tip:

  • Use these procedures to troubleshoot the engine immobiliser system.

  • *: Use 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.

    Tip:

    A simple method to determine whether the battery is depleted is to operate the horn.

    Result

    Proceed to

    NEXT
    NEXT

  3. TURN ENGINE SWITCH ON (IG)

    Tip:

    If the engine switch cannot be turned on (IG), communication with the intelligent tester can be confirmed by connecting the intelligent tester to the vehicle and turning a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the intelligent tester and vehicle begins.

    Result

    Proceed to

    NEXT
    NEXT

  4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

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

      Result

      Result

      Proceed to

      CAN DTC is not output

      A

      CAN DTC is output

      B
    B

    GO TO CAN COMMUNICATION SYSTEM

    Click here

    A

  5. CHECK 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

      LIN DTC is not output

      A

      LIN DTC is output

      B
    B

    GO TO LIN COMMUNICATION SYSTEM

    Click here

    A

  6. CHECK FOR DTC*

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

      Click here

    2. Based on the DTCs output above, proceed to each diagnostic procedure.

      Result

      Result

      Proceed to

      DTC is not output

      A

      SFI system (for 1UR-FE, w/ EGR System) DTC is output

      B

      SFI system (for 1UR-FE, w/o EGR System) DTC is output

      C

      SFI system (for 1GR-FE) DTC is output

      D

      Steering lock system DTC is output

      E

      Engine immobiliser system DTC is output

      F
    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART

    Click hereClick hereClick here

    C

    GO TO DIAGNOSTIC TROUBLE CODE CHART

    Click hereClick hereClick here

    D

    GO TO DIAGNOSTIC TROUBLE CODE CHART

    Click hereClick here

    E

    GO TO DIAGNOSTIC TROUBLE CODE CHART

    Click here

    F

    GO TO DIAGNOSTIC TROUBLE CODE CHART

    Click here

    A

  7. 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

    ADJUST, REPAIR OR REPLACEClick here

    A

  8. OVERALL ANALYSIS AND TROUBLESHOOTING*

    1. Check Data List / Active Test.

      Click here

    2. Check Terminals of ECU.

      Click here

      Result

      Proceed to

      NEXT
    NEXT

  9. ADJUST, REPAIR OR REPLACE

    Result

    Proceed to

    NEXT
    NEXT

  10. CHECK FOR DTC*

    1. Clear the DTCs.

      Click here

    2. Check for DTCs.

      Click here

      Tip:

      Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.

      Click here

      Result

      Result

      Proceed to

      DTC is not output

      A

      Engine immobiliser system DTC is output

      B
    A

    END

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART

    Click here