ENGINE IMMOBILISER SYSTEM (w/o Smart Entry and Start System) Engine does not Start but Initial Combustion Occurs

DESCRIPTION

If the key ID codes of the key and transponder key ECU assembly match, the immobiliser system is unset and the engine start permission signal is sent to the ECM. When the ID codes of the transponder key ECU assembly and ECM match, the engine starts.

WIRING DIAGRAM

A003FO0E02

INSPECTION PROCEDURE

Note


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

  • When using the GTS with the vehicle ignition switch off, connect the GTS to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Immobiliser. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC is not output.

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    OK

  3. READ VALUE USING GTS (IMMOBILISER FUEL CUT)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List.

    5. Read the Data List according to the display on the GTS.

      Engine and ECT
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      Immobiliser Fuel Cut Status of immobiliser system fuel cut / OFF/ON

      ON: Immobiliser fuel cut on

      OFF: Immobiliser fuel cut off

      		 -
      OK
      The item in the Data List indicates "OFF".
      Result
      Result Proceed to
      OK (for 1TR-FE, 2TR-FE) A
      OK (for 1KD-FTV, 2KD-FTV) B
      NG C

      Tech Tips

      *: Go to procedure:



    B

    GO TO ECD SYSTEM*

    C

    CHECK WHETHER ENGINE STARTS Click here

    A

    GO TO SFI SYSTEM*

  4. CHECK WHETHER ENGINE STARTS


    1. Using a registered key, turn the ignition switch to ON.

    2. Check that the engine starts 5 seconds after the ignition switch was turned to ON.

      OK
      Engine starts normally.
      Result
      Result Proceed to
      Engine can be started A
      Engine cannot be started B

    B

    REGISTER ECU COMMUNICATION ID Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  5. REGISTER ECU COMMUNICATION ID


    1. Register the communication ID between the transponder key ECU assembly and ECM.

      Tech Tips

      Refer to Service Bulletin.


    NEXT

  6. CHECK WHETHER ENGINE STARTS


    1. Using a registered key, turn the ignition switch to ON.

    2. Check that the engine starts 5 seconds after the ignition switch was turned to ON.

      OK
      Engine starts normally.
      Result
      Result Proceed to
      Engine can be started A
      Engine cannot be started B

    B

    REPLACE ECM Click here

    A

    END (REGISTERED COMMUNICATION ID WAS DEFECTIVE)

  7. REPLACE ECM


    1. Temporarily replace the ECM with a new or known good one.



    NEXT

  8. CHECK WHETHER ENGINE STARTS


    1. Using a registered key, turn the ignition switch to ON.

    2. Check that the engine starts 5 seconds after the ignition switch was turned to ON.

      OK
      Engine starts normally.

    NG

    CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - ECM) Click here

    OK

    END (ECM WAS DEFECTIVE)

  9. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - ECM)


    1. Disconnect the H60 transponder key ECU assembly connector.

    2. Disconnect the B71*1, B72*2, B73*3 or B88*4 ECM connector.


      • *1: for 1TR-FE, 2TR-FE

      • *2: for 1KD-FTV (w/o DPF)

      • *3: for 1KD-FTV (w/ DPF)

      • *4: for 2KD-FTV

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      for 1TR-FE, 2TR-FE
      Tester Connection Condition Specified Condition
      H60-13 (EFIO) - B71-11 (IMI) Always Below 1 Ω
      H60-12 (EFII) - B71-10 (IMO) Always Below 1 Ω
      H60-13 (EFIO) - Body ground Always 10 kΩ or higher
      H60-12 (EFII) - Body ground Always 10 kΩ or higher
      B71-11 (IMI) - Body ground Always 10 kΩ or higher
      B71-10 (IMO) - Body ground Always 10 kΩ or higher
      for 1KD-FTV (w/o DPF)
      Tester Connection Condition Specified Condition
      H60-13 (EFIO) - B72-16 (IMI) Always Below 1 Ω
      H60-12 (EFII) - B72-15 (IMO) Always Below 1 Ω
      H60-13 (EFIO) - Body ground Always 10 kΩ or higher
      H60-12 (EFII) - Body ground Always 10 kΩ or higher
      B72-16 (IMI) - Body ground Always 10 kΩ or higher
      B72-15 (IMO) - Body ground Always 10 kΩ or higher
      for 1KD-FTV (w/ DPF)
      Tester Connection Condition Specified Condition
      H60-13 (EFIO) - B73-16 (IMI) Always Below 1 Ω
      H60-12 (EFII) - B73-15 (IMO) Always Below 1 Ω
      H60-13 (EFIO) - Body ground Always 10 kΩ or higher
      H60-12 (EFII) - Body ground Always 10 kΩ or higher
      B73-16 (IMI) - Body ground Always 10 kΩ or higher
      B73-15 (IMO) - Body ground Always 10 kΩ or higher
      for 2KD-FTV
      Tester Connection Condition Specified Condition
      H60-13 (EFIO) - B88-16 (IMI) Always Below 1 Ω
      H60-12 (EFII) - B88-15 (IMO) Always Below 1 Ω
      H60-13 (EFIO) - Body ground Always 10 kΩ or higher
      H60-12 (EFII) - Body ground Always 10 kΩ or higher
      B88-16 (IMI) - Body ground Always 10 kΩ or higher
      B88-15 (IMO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK TRANSPONDER KEY ECU ASSEMBLY


    1. Replace the transponder key ECU assembly with a new one.

      Tech Tips

      Refer to Service Bulletin.

      Note

      Key ID code registration is necessary when replacing the transponder key ECU assembly. Refer to Service Bulletin.

    2. Using a registered key, turn the ignition switch to ON.

    3. Check that the engine starts 5 seconds after the ignition switch was turned to ON.

      OK
      Engine starts normally.
      Result
      Result Proceed to
      OK A
      NG (for 1TR-FE, 2TR-FE) B
      NG (for 1KD-FTV, 2KD-FTV) C

      Tech Tips

      *: Go to procedure:



    B

    GO TO SFI SYSTEM*

    C

    GO TO ECD SYSTEM*

    A

    END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)