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

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Tip:

  • Use these procedures to troubleshoot the engine immobiliser system.


  • *: Use the intelligent tester.


  1. Click here

    VEHICLE BROUGHT TO WORKSHOP


    • NEXT
  2. Click here

    INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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


    • NEXT
  3. Click here

    INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*


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

      Table 1. Result
      Result Proceed to
      LIN DTC is not output A
      LIN DTC is output B

      • B
      • GO TO LIN COMMUNICATION SYSTEM (See pageClick here)
      • A
  4. Click here

    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, SFI system, steering lock system or engine immobiliser system DTC by reproducing the symptoms indicated by the DTC.

      Table 2. Result
      Result Proceed to
      DTC is not output A
      ECD system (for 1AD-FTV [for CCo]) DTC is output B
      ECD system (for 1AD-FTV [for DPF]) DTC is output C
      ECD system (for 2AD-FHV) DTC is output D
      SFI system (for 1ZR-FAE) DTC is output E
      SFI system (for 2ZR-FAE) DTC is output F
      Steering lock system DTC is output G
      Engine immobiliser system DTC is output H

      • B
      • Go to DIAGNOSTIC TROUBLE CODE CHART (See pageClick here)
      • C
      • Go to DIAGNOSTIC TROUBLE CODE CHART (See pageClick here)
      • D
      • Go to DIAGNOSTIC TROUBLE CODE CHART (See pageClick here)
      • E
      • Go to DIAGNOSTIC TROUBLE CODE CHART (See pageClick here)
      • F
      • Go to DIAGNOSTIC TROUBLE CODE CHART (See pageClick here)
      • G
      • Go to DIAGNOSTIC TROUBLE CODE CHART (See pageClick here)
      • H
      • Go to DIAGNOSTIC TROUBLE CODE CHART (See pageClick here)
      • A
  5. Click here

    PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table (Click here).

      Table 3. 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
      • A
  6. Click here

    OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Data List / Active Test (Click here).

    2. Terminals of ECU (Click here).


      • NEXT
  7. Click here

    ADJUST, REPAIR OR REPLACE


    • NEXT
  8. Click here

    CONFIRMATION TEST


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    • END