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

Tech Tips


  • Use these procedures to troubleshoot the engine immobiliser system.

  • *: Use the intelligent tester.

  • If the ignition switch cannot be turned to ON, communication with the intelligent tester can be performed 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.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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

    Tech Tips

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


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  3. CRANK ENGINE FOR MORE THAN 10 SECONDS


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  4. CHECK FOR DTC*


    1. Check for DTCs and note 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 DTC is output (for 1GR-FE) B
      ECD system DTC is output (for 1VD-FTV) C
      Engine immobiliser system DTC is output D

      B

      GO TO SFI SYSTEM Click here

      C

      GO TO ECD SYSTEM Click here

      D

      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
      A

  6. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Data List / Active Test Click here.

    2. Terminals of ECU Click here.


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  7. ADJUST, REPAIR OR REPLACE


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  8. CHECK FOR DTC*


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Tech Tips

      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

      B

      GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

      A
      END