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

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use this procedure to troubleshoot the immobiliser system.

  • *: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. CUSTOMER PROBLEM ANALYSIS

    Tech Tips


    • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.

    • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

    • The following 5 items are important points for problem analysis:

    What Vehicle model, system name
    When Date, time, occurrence frequency
    Where Whether the problem occurs at a specific location.
    Under what conditions? Whether the doors were locked or unlocked, whether the ignition switch was ON, whether the engine was running.
    How did it happen? Problem symptoms
    Result
    Proceed to
    NEXT

    NEXT

  3. INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage.

      Standard voltage
      11 to 14 V

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

      Result
      Proceed to
      NEXT

    NEXT

  4. CRANK ENGINE FOR MORE THAN 10 SECONDS

    Result
    Proceed to
    NEXT

    NEXT

  5. CHECK FOR DTC* (ECM AND TELEPHONE TRANSCEIVER ASSEMBLY)


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

      Click here


      Powertrain > Engine and ECT > Trouble Codes
      Powertrain > Engine > Trouble Codes
      Body Electrical > Telematics > Trouble Codes
      Body Electrical > Immobiliser > Trouble Codes

      Tech Tips

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

      Result
      Proceed to
      DTCs are not output
      SFI system DTCs are output (for 2AR-FE)
      SFI system DTCs are output (for 3ZR-FAE)
      SFI system DTCs are output (for 3ZR-FE)
      ECD system DTCs are output (for 1AD-FTV)
      ECD system DTCs are output (for 2AD-CCo)
      ECD system DTCs are output (for 2AD-DPF)
      ECD system DTCs are output (for 2AD-FHV)
      Blocking system DTCs are output (w/ Blocking System)
      Immobiliser system DTCs are output

    SFI system DTCs are output (for 2AR-FE)

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    SFI system DTCs are output (for 3ZR-FAE)

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    SFI system DTCs are output (for 3ZR-FE)

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    ECD system DTCs are output (for 1AD-FTV)

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    ECD system DTCs are output (for 2AD-CCo)

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    ECD system DTCs are output (for 2AD-DPF)

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    ECD system DTCs are output (for 2AD-FHV)

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    Blocking system DTCs are output (w/ Blocking System)

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    Immobiliser system DTCs are output

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    DTCs are not output

  6. CHECK FOR DTC* (TRANSPONDER KEY ECU ASSEMBLY)


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

      Click here


      Body Electrical > Immobiliser > Trouble Codes

      Tech Tips

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

      Result
      Proceed to
      DTCs are not output
      Immobiliser system DTCs are output

    Immobiliser system DTCs are output

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    DTCs are not output

  7. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table.

      Click here

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

    Fault is listed in problem symptoms table

    ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

    Fault is not listed in problem symptoms table

  8. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Data List / Active Test

      Click here

    2. Terminals of ECU

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  9. REPAIR OR REPLACE

    Tech Tips

    If the transponder key ECU assembly, ECM, or key is replaced, refer to the Service Bulletin.

    Result
    Proceed to
    NEXT

    NEXT

  10. CHECK FOR DTC*


    1. Clear the DTCs.

      Click here


      Body Electrical > Immobiliser > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Immobiliser > Trouble Codes

      Tech Tips

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

      Result
      Proceed to
      DTCs are not output
      Immobiliser system DTCs are output

    DTCs are not output

    END

    Immobiliser system DTCs are output

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here