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.


  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.


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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. Clear the DTCs Click here.

    3. Recheck for DTCs. Try to duplicate the DTC (SFI system and engine immobiliser system) by reproducing the symptoms indicated by the DTC.

      Result
      Result Proceed to
      DTC is not output A
      SFI system (for 1ZR-FAE) DTC is output B
      SFI system (for 2ZR-FAE) DTC is output C
      SFI system (for 3ZR-FAE) DTC is output D
      SFI system (for 3ZR-FE) DTC is output E
      Engine immobiliser system DTC is output F

      B

      Go to SFI SYSTEM Click here

      C

      Go to SFI SYSTEM Click here

      D

      Go to SFI SYSTEM Click here

      E

      Go to SFI SYSTEM Click here

      F

      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. CONFIRMATION TEST


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    END