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

DESCRIPTION

The key ID code of the transponder chip inside the IG key is compared against the key ID code registered in the transponder key ECU assembly. While checking the code, the transponder key ECU assembly supplies electrical power to the transponder chip in the key by means of the transponder key amplifier. If the codes match, the immobiliser is then UNSET (released), and after the E/G start permission signal is sent to the ECM, if communication is functioning properly, E/G start can be performed.

WIRING DIAGRAM

A01VJNCE06

CAUTION / NOTICE / HINT

Note

When replacing the key and transponder key ECU assembly, refer to the Service Bulletin.

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs Click here.

      Tech Tips

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

      Result
      Result Proceed to
      No DTC output A
      DTC output B

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  2. CONFIRM ENGINE MODELS


    1. Check the vehicle specifications.

      Result
      Result Proceed to
      for 1NR-FE A
      for 1KR-FE or 1ND-TV B

    B

    CHECK WHETHER ENGINE STARTS Click here

    A

  3. READ VALUE USING INTELLIGENT TESTER


    1. Turn the ignition switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the intelligent tester on.

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

      Engine and ECT
      Tester Display Measurement Item/Range Normal Condition Stored as Freeze Frame Data
      Immobiliser Fuel Cut

      Status of immobiliser fuel cut/

      ON or OFF

      		 - Yes
      OK
      The item in the Data List indicates "OFF"
      Result
      Result Proceed to
      NG A
      OK B

    B

    GO TO SFI SYSTEM Click here

    A

  4. CHECK WHETHER ENGINE STARTS


    1. It leaves for 5 seconds by the ignition switch ON status, and the engine starting operation is done.

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

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  5. CHECK ECM (TERMINAL IMI)


    1. for 1KR-FE


      1. Using an oscilloscope, check the waveform.

        A01VL1TE02
        Text in Illustration
        *a

        Component with harness connected

        (ECM)

        		 *b

        Component with harness connected

        (Transponder Key ECU Assembly)
        *c Waveform 1 *d Waveform 2
        *e Waveform A - -
        Measurement Condition
        Item Content
        Tester Connection A71-39 (IMI) - F54-13 (EFIO)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

    2. for 1NR-FE


      1. Using an oscilloscope, check the waveform.

        A01VJ1IE02
        Text in Illustration
        *a

        Component with harness connected

        (ECM)

        		 *b

        Component with harness connected

        (Transponder Key ECU Assembly)
        *c Waveform 1 *d Waveform 2
        *e Waveform A - -
        Measurement Condition
        Item Content
        Tester Connection A58-28 (IMI) - F54-13 (EFIO)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

    3. for 1ND-TV


      1. Using an oscilloscope, check the waveform.

        A01VENPE02
        Text in Illustration
        *a

        Component with harness connected

        (ECM)

        		 *b

        Component with harness connected

        (Transponder Key ECU Assembly)
        *c Waveform 1 *d Waveform 2
        *e Waveform A - -
        Measurement Condition
        Item Content
        Tester Connection A59-77 (IMI) - F54-13 (EFIO)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON
      OK
      Waveform is output normally (refer to illustration).
      Result
      Result Proceed to
      Normal waveform A
      Waveform 1 or 2 (Waveform A) not output, or has abnormal wavelength or shape B

    B

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

    A

  6. CHECK ECM (TERMINAL IMO)


    1. for 1KR-FE


      1. Using an oscilloscope, check the waveform.

        A01VFW4E02
        Text in Illustration
        *a

        Component with harness connected

        (ECM)

        		 *b

        Component with harness connected

        (Transponder Key ECU Assembly)
        *c Waveform 1 *d Waveform 2
        *e Waveform B *f 160 ms
        *g 510 ms *h 270 ms
        Measurement Condition
        Item Content
        Tester Connection A71-6 (IMO) - F54-12 (EFII)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

    2. for 1NR-FE


      1. Using an oscilloscope, check the waveform.

        A01VJIQE02
        Text in Illustration
        *a

        Component with harness connected

        (ECM)

        		 *b

        Component with harness connected

        (Transponder Key ECU Assembly)
        *c Waveform 1 *d Waveform 2
        *e Waveform B *f 160 ms
        *g 510 ms *h 270 ms
        Measurement Condition
        Item Content
        Tester Connection A58-29 (IMO) - F54-12 (EFII)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

    3. for 1ND-TV


      1. Using an oscilloscope, check the waveform.

        A01VK5RE02
        Text in Illustration
        *a

        Component with harness connected

        (ECM)

        		 *b

        Component with harness connected

        (Transponder Key ECU Assembly)
        *c Waveform 1 *d Waveform 2
        *e Waveform B *f 160 ms
        *g 510 ms *h 270 ms
        Measurement Condition
        Item Content
        Tester Connection A59-78 (IMO) - F54-12 (EFII)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON
      OK
      Waveform is output normally (refer to illustration).
      Result
      Result Proceed to
      Normal waveform A
      Waveform 1 or 2 (Waveform B) not output, or has abnormal wavelength or shape (for 1KR-FE) B
      Waveform 1 or 2 (Waveform B) not output, or has abnormal wavelength or shape (for 1NR-FE) C
      Waveform 1 or 2 (Waveform B) not output, or has abnormal wavelength or shape (for 1ND-TV) D

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    D

    REPLACE ECM Click here

    A

  7. CHECK ECM (TERMINAL IMI)


    1. for 1KR-FE


      1. Using an oscilloscope, check the waveform.

        A01VJADE02
        Text in Illustration
        *a

        Component with harness connected

        (ECM)

        		 *b

        Component with harness connected

        (Transponder Key ECU Assembly)
        *c Waveform 1 *d Waveform 2
        *e Waveform B *f 160 ms
        *g 510 ms *h 270 ms
        Measurement Condition
        Item Content
        Tester Connection A71-39 (IMI) - F54-13 (EFIO)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

    2. for 1NR-FE


      1. Using an oscilloscope, check the waveform.

        A01VH68E01
        Text in Illustration
        *a

        Component with harness connected

        (ECM)

        		 *b

        Component with harness connected

        (Transponder Key ECU Assembly)
        *c Waveform 1 *d Waveform 2
        *e Waveform B *f 160 ms
        *g 510 ms *h 270 ms
        Measurement Condition
        Item Content
        Tester Connection A58-28 (IMI) - F54-13 (EFIO)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON

    3. for 1ND-TV


      1. Using an oscilloscope, check the waveform.

        A01VG8NE01
        Text in Illustration
        *a

        Component with harness connected

        (ECM)

        		 *b

        Component with harness connected

        (Transponder Key ECU Assembly)
        *c Waveform 1 *d Waveform 2
        *e Waveform B *f 160 ms
        *g 510 ms *h 270 ms
        Measurement Condition
        Item Content
        Tester Connection A59-77 (IMI) - F54-13 (EFIO)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON
      OK
      Waveform is output normally (refer to illustration).
      Result
      Result Proceed to
      Normal waveform A
      Waveform 1 or 2 (Waveform C) not output, or has abnormal wavelength or shape B

    B

    REPLACE TRANSPONDER KEY ECU ASSEMBLY Click here

    A

  8. REGISTER ECU COMMUNICATION ID


    1. Register the ECU communication ID (Refer to Service Bulletin).


    NEXT

  9. CHECK WHETHER ENGINE STARTS


    1. Check that the engine starts with the key.

      OK
      Engine starts normally.

    OK

    END

    NG

    REPLACE TRANSPONDER KEY ECU ASSEMBLY Click here

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


    1. for 1KR-FE


      1. Disconnect the A71 ECM connector.

      2. Disconnect the F54 transponder key ECU assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        A71-39 (IMI) - F54-13 (EFIO) Always Below 1 Ω
        F54-13 (EFIO) - Body ground Always 10 kΩ or higher

    2. for 1NR-FE


      1. Disconnect the A58 ECM connector.

      2. Disconnect the F54 transponder key ECU assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        A58-28 (IMI) - F54-13 (EFIO) Always Below 1 Ω
        F54-13 (EFIO) - Body ground Always 10 kΩ or higher

    3. for 1ND-TV


      1. Disconnect the A59 ECM connector.

      2. Disconnect the F54 transponder key ECU assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        A59-77 (IMI) - F54-13 (EFIO) Always Below 1 Ω
        F54-13 (EFIO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. REPLACE TRANSPONDER KEY ECU ASSEMBLY


    1. Replace the transponder key ECU assembly with a new one (Refer to Service Bulletin).

    2. Check that the engine starts with the key.

      OK
      Engine starts normally.
      Result
      Result Proceed to
      OK A
      NG (for 1KR-FE) B
      NG (for 1NR-FE) C
      NG (for 1ND-TV with DPF) D
      NG (for 1ND-TV without DPF) E

    A

    END

    B

    GO TO SFI SYSTEM Click here

    C

    GO TO SFI SYSTEM Click here

    D

    GO TO ECD SYSTEM Click here

    E

    GO TO ECD SYSTEM Click here