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

B0041ZLE03

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs
      Powertrain > Engine and ECT > Clear DTCs
      Powertrain > Engine > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs.


      Body Electrical > Immobiliser > Trouble Codes
      Powertrain > Engine and ECT > Trouble Codes
      Powertrain > Engine and ECT > Trouble Codes
      Powertrain > Engine > Trouble Codes
      OK
      DTC is not output.
      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    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: Body Electrical / Engine and ECT*1 or Engine*2 / Active Test.

      *1: except 8NR-FTS

      *2: for 8NR-FTS

    5. Perform the Active Test according to the display on the GTS.


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

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

      Powertrain > Engine and ECT > Data List
      Tester Display
      Immobiliser Fuel Cut

      Powertrain > Engine > Data List
      Tester Display
      Immobiliser Fuel Cut Status
      OK
      OFF is displayed after the engine is started.
      Result
      Result Proceed to
      OK (for 1NR-FE) A
      OK (for 1ZR-FAE) B
      OK (for 1ND-TV) C
      OK (for 1ZR-FE) D
      OK (for 2ZR-FE) E
      OK (for 8NR-FTS) F
      OK (for 1WW) G
      NG H

    A

    GO TO SFI SYSTEM Click here

    B

    GO TO SFI SYSTEM Click here

    C

    GO TO ECD SYSTEM Click here

    D

    GO TO SFI SYSTEM Click here

    E

    GO TO SFI SYSTEM Click here

    F

    GO TO SFI SYSTEM Click here

    G

    GO TO ECD SYSTEM Click here

    H

  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. CHECK ECM (TERMINAL IMI)


    1. for 1ZR-FE, 2ZR-FE, 1ZR-FAE or 1NR-FE


      1. Using an oscilloscope, check the waveform.

        B0041ROC02
        *a

        Component with harness connected

        (ECM)

        		 *b Waveform
        Item Content
        Terminal No. (Symbol) A50-28 (IMI) - Body ground
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

    2. for 1ND-TV


      1. Using an oscilloscope, check the waveform.

        B00434GC05
        *a

        Component with harness connected

        (ECM)

        		 *b Waveform
        Item Content
        Terminal No. (Symbol) A101-77 (IMI) - Body ground
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

    3. for 8NR-FTS


      1. Using an oscilloscope, check the waveform.

        B0041ROC27
        *a

        Component with harness connected

        (ECM)

        		 *b Waveform
        Measurement Condition
        Item Content
        Tester Connection A173-28 (IMI) - Body ground
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

    4. for 1WW


      1. Using an oscilloscope, check the waveform.

        B0041ROC23
        *a

        Component with harness connected

        (ECM)

        		 *b Waveform
        Measurement Condition
        Item Content
        Tester Connection A50-34 (IMI) - Body ground
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON
      Result
      Result Proceed to
      Normal waveform A
      Waveform not output, or has abnormal wavelength or shape B

    B

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

    A

  6. CHECK ECM (TERMINAL IMO)


    1. for 1ZR-FE, 2ZR-FE, 1ZR-FAE or 1NR-FE


      1. Using an oscilloscope, check the waveform.

        B0041VLC03
        *a

        Component with harness connected

        (ECM)

        		 *b Waveform
        Item Content
        Terminal No. (Symbol) A50-29 (IMO) - Body ground
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of the ignition switch first being turned to ON after cable is disconnected and reconnected to the negative (-) battery terminal

    2. for 1ND-TV


      1. Using an oscilloscope, check the waveform.

        B0044UQC01
        *a

        Component with harness connected

        (ECM)

        		 *b Waveform
        Item Content
        Terminal No. (Symbol) A101-78 (IMO) - Body ground
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of the ignition switch first being turned to ON after cable is disconnected and reconnected to the negative (-) battery terminal

    3. for 8NR-FTS


      1. Using an oscilloscope, check the waveform.

        B0041VLC54
        *a

        Component with harness connected

        (ECM)

        		 *b Waveform
        Measurement Condition
        Item Content
        Tester Connection A173-45 (IMO) - Body ground
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of the ignition switch first being turned to ON after cable is disconnected and reconnected to the negative (-) battery terminal

    4. for 1WW


      1. Using an oscilloscope, check the waveform.

        B0041VLC48
        *a

        Component with harness connected

        (ECM)

        		 *b Waveform
        Measurement Condition
        Item Content
        Tester Connection A50-44 (IMO) - Body ground
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of the ignition switch first being turned to ON after cable is disconnected and reconnected to the negative (-) battery terminal
      Result
      Result Proceed to
      Normal waveform A
      Waveform not output, or has abnormal wavelength or shape B

    B

    REPLACE ECM for 1ND-TV: Click here
    REPLACE ECM for 1NR-FE: Click here
    REPLACE ECM for 1ZR-FAE: Click here
    REPLACE ECM for 1ZR-FE: Click here
    REPLACE ECM for 2ZR-FE: Click here
    REPLACE ECM for 8NR-FTS: Click here
    REPLACE ECM for 1WW: Click here

    A

  7. REGISTER ECU COMMUNICATION ID


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

      Tech Tips

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

    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.
      Result
      Result Proceed to
      Engine can be started A
      Engine cannot be started B

    A

    END (REGISTERED COMMUNICATION ID WAS DEFECTIVE)

    B

  9. REPLACE 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.

      Result
      Proceed to
      NEXT

    NEXT

  10. 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
      OK A
      NG (for 1ND-TV) B
      NG (for 1NR-FE) C
      NG (for 1ZR-FAE) D
      NG (for 1ZR-FE) E
      NG (for 2ZR-FE) F
      NG (for 8NR-FTS) G
      NG (for 1WW) H

    A

    END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

    B

    GO TO ECD 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 SFI SYSTEM Click here

    G

    GO TO SFI SYSTEM Click here

    H

    GO TO ECD SYSTEM Click here

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


    1. for 1ZR-FE, 2ZR-FE, 1ZR-FAE or 1NR-FE


      1. Disconnect the E21 transponder key ECU assembly connector.

      2. Disconnect the A50 ECM connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E21-13 (EFIO) - A50-28 (IMI) Always Below 1 Ω
        E21-13 (EFIO) - Body ground Always 10 kΩ or higher
        A50-28 (IMI) - Body ground Always 10 kΩ or higher

    2. for 1ND-TV


      1. Disconnect the E21 transponder key ECU assembly connector.

      2. Disconnect the A101 ECM connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E21-13 (EFIO) - A101-77 (IMI) Always Below 1 Ω
        E21-13 (EFIO) - Body ground Always 10 kΩ or higher
        A101-77 (IMI) - Body ground Always 10 kΩ or higher

    3. for 8NR-FTS


      1. Disconnect the E21 transponder key ECU assembly connector.

      2. Disconnect the A173 ECM connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E21-13 (EFIO) - A173-28 (IMI) Always Below 1 Ω
        E21-13 (EFIO) - Body ground Always 10 kΩ or higher
        A173-28 (IMI) - Body ground Always 10 kΩ or higher

    4. for 1WW


      1. Disconnect the E21 transponder key ECU assembly connector.

      2. Disconnect the A50 ECM connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E21-13 (EFIO) - A50-34 (IMI) Always Below 1 Ω
        E21-13 (EFIO) - Body ground Always 10 kΩ or higher
        A50-34 (IMI) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR