ENGINE IMMOBILISER SYSTEM(w/o 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

B001X6OE13

CAUTION / NOTICE / HINT

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.
      Result
      Result Proceed to
      OK (1GR-FE) A
      OK (1VD-FTV) B
      NG C

    B

    CHECK WHETHER ENGINE STARTS Click here

    C

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  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".

    OK

    GO TO SFI SYSTEM Click here

    NG

  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

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  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

    A

    END (REGISTERED COMMUNICATION ID WAS DEFECTIVE)

    B

  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.

    OK

    END (ECM WAS DEFECTIVE)

    NG

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


    1. Disconnect the E96 transponder key ECU assembly connector.

    2. Disconnect the A38*1 or A52*2 ECM connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      E96-12 (EFII) - A38-29 (IMO) Always Below 1 Ω
      E96-13 (EFIO) - A38-40 (IMI) Always Below 1 Ω
      E96-12 (EFII) - Body ground Always 10 kΩ or higher
      E96-13 (EFIO) - Body ground Always 10 kΩ or higher
      A38-29 (IMO) - Body ground Always 10 kΩ or higher
      A38-40 (IMI) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      E96-12 (EFII) - A52-29 (IMO) Always Below 1 Ω
      E96-13 (EFIO) - A52-40 (IMI) Always Below 1 Ω
      E96-12 (EFII) - Body ground Always 10 kΩ or higher
      E96-13 (EFIO) - Body ground Always 10 kΩ or higher
      A52-29 (IMO) - Body ground Always 10 kΩ or higher
      A52-40 (IMI) - 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 1GR-FE) B
      NG (for 1VD-FTV) C

    A

    END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

    B

    GO TO SFI SYSTEM Click here

    C

    GO TO ECD SYSTEM Click here