ENGINE IMMOBILISER SYSTEM(w/o Entry and Start System) Engine does not Start because No Initial Combustion

DESCRIPTION


WIRING DIAGRAM

A01VL0NE01

CAUTION / NOTICE / HINT

Note


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

  • Inspection the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. 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

  3. CONFIRM ENGINE MODELS


    1. Check the vehicle specifications.

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

    B

    READ VALUE USING INTELLIGENT TESTER (IMMOBILISER) Click here

    A

  4. READ VALUE USING INTELLIGENT TESTER (IMMOBILISER FUEL CUT)


    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

  5. READ VALUE USING INTELLIGENT TESTER (IMMOBILISER)


    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: Body / Immobiliser / Data List.

      Immobiliser
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Immobiliser

      Engine immobiliser system status determined by transponder key ECU assembly /

      Set or Unset

      Set: Engine immobiliser set (engine start prohibited (no key in ignition key cylinder))

      Unset: Engine immobiliser unset (engine start permitted (key inserted in ignition key cylinder))

      		 When the engine immobiliser system does not change to the unset state, this item can be used to determine if the cause is the transponder key ECU assembly.
      OK
      On the intelligent tester screen, the display changes between Set and Unset as shown in the table above.

    OK

    GO TO ENGINE DOES NOT START BUT INITIAL COMBUSTION OCCURS Click here

    NG

  6. READ VALUE USING INTELLIGENT TESTER (IMMOBILISER)


    1. Perform inspection using a different key that has been registered to the vehicle.

    2. Turn the ignition switch off.

    3. Connect the intelligent tester to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn the intelligent tester on.

    6. Enter the following menus: Body / Immobiliser / Data List.

      Immobiliser
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Immobiliser

      Engine immobiliser system status determined by transponder key ECU assembly /

      Set or Unset

      Set: Engine immobiliser set (engine start prohibited (no key in ignition key cylinder))

      Unset: Engine immobiliser unset (engine start permitted (key inserted in ignition key cylinder))

      		 When the engine immobiliser system does not change to the unset state, this item can be used to determine if the cause is the transponder key ECU assembly.
      OK
      On the intelligent tester screen, the display changes between Set and Unset as shown in the table above.

    NG

    CHECK TRANSPONDER KEY AMPLIFIER (VC5 SIGNAL) Click here

    OK

  7. CHECK WHETHER ENGINE STARTS WITH OTHER KEYS


    1. Perform inspection using a different key that has been registered to the vehicle.

    2. 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

    A

    GO TO ENGINE DOES NOT START BUT INITIAL COMBUSTION OCCURS Click here

    B

    REPLACE KEY Click here

  8. CHECK TRANSPONDER KEY AMPLIFIER (VC5 SIGNAL)


    1. Disconnect the F55 transponder key amplifier connector.

    2. A01VE4RE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transponder Key Amplifier)
      *b Waveform

      Using an oscilloscope, check the waveform.


      1. Waveform (Reference)

        Measurement Condition
        Item Content
        Tester Connection F55-1 (VC5) - Body ground
        Tool Setting 1 V/DIV., 20 ms./DIV.
        Condition Key inserted in ignition key cylinder
        OK
        Waveform is output normally (refer to illustration).

    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    NG

  9. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY AMPLIFIER - TRANSPONDER KEY ECU ASSEMBLY, IG TERMINAL VOLTAGE)


    1. Disconnect the F55 transponder key amplifier 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
      F55-1 (VC5) - F54-14 (VC5) Always Below 1 Ω
      F55-7 (AGND) - F54-5 (AGND) Always Below 1 Ω
      F55-1 (VC5) - Body ground Always 10 kΩ or higher
    4. A01VHT5E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transponder key ECU assembly)

      Reconnect the transponder key amplifier connector.

    5. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F54-2 (IG) - F54-16 (GND) Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK TRANSPONDER KEY AMPLIFIER (TXCT SIGNAL)


    1. Disconnect the F55 transponder key amplifier connector.

    2. A01VLR6E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transponder Key Amplifier)
      *b Waveform

      Using an oscilloscope, check the waveform.


      1. Waveform (Reference)

        Measurement Condition
        Item Content
        Tester Connection F55-5 (TXCT) - Body ground
        Tool Setting 1 V/DIV., 20 ms./DIV.
        Condition Key inserted in ignition key cylinder
        OK
        Waveform is output normally (refer to illustration).

    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    NG

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


    1. Disconnect the F55 transponder key amplifier 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
      F55-5 (TXCT) - F54-4 (TXCT) Always Below 1 Ω
      F55-5 (TXCT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK TRANSPONDER KEY AMPLIFIER (CODE SIGNAL)


    1. Disconnect the F55 transponder key amplifier connector.

    2. A01VIVVE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transponder Key Amplifier)
      *b Waveform

      Using an oscilloscope, check the waveform.


      1. Waveform (Reference)

        Measurement Condition
        Item Content
        Tester Connection F55-4 (CODE) - Body ground
        Tool Setting 1 V/DIV., 20 ms./DIV.
        Condition Key inserted in ignition key cylinder
        OK
        Waveform is output normally (refer to illustration).

    OK

    REPLACE TRANSPONDER KEY ECU ASSEMBLY

    NG

  13. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY AMPLIFIER - TRANSPONDER KEY ECU ASSEMBLY)


    1. Disconnect the F55 transponder key amplifier 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
      F55-4 (CODE) - F54-15 (CODE) Always Below 1 Ω
      F55-4 (CODE) - Body ground Always 10 kΩ or higher

    4. Reconnect the transponder key ECU assembly connector.

    5. Reconnect the transponder key amplifier connector.

    6. A01VF2IE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transponder Key Amplifier)
      *b Waveform

      Using an oscilloscope, check the waveform.


      1. Waveform (Reference)

        Measurement Condition
        Item Content
        Tester Connection F55-4 (CODE) - Body ground
        Tool Setting 1 V/DIV., 20 ms./DIV.
        Condition Key inserted in ignition key cylinder
        OK
        Waveform is output normally (refer to illustration).
        Result
        Result Proceed to
        Terminal CODE stuck high (5 V) A
        Terminal CODE stuck low (1 V or less) B
        Problem in wire harness or connector C

    B

    REPLACE TRANSPONDER KEY ECU ASSEMBLY Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  14. REPLACE TRANSPONDER KEY AMPLIFIER


    1. Replace the transponder key amplifier Click here.


    NEXT

  15. CHECK WHETHER ENGINE STARTS

    Check that the engine starts with an already registered vehicle key.

    OK
    Engine starts normally.

    OK

    END (TRANSPONDER KEY AMPLIFIER WAS DEFECTIVE)

    NG

  16. REPLACE TRANSPONDER KEY ECU ASSEMBLY


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


    NEXT

  17. REGISTER KEY


    1. Reregister the key (Refer to Service Bulletin).


    NEXT

  18. REGISTER ECU COMMUNICATION ID


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


    NEXT

  19. CHECK WHETHER ENGINE STARTS


    1. Check that the engine starts with an already registered vehicle key.

      OK
      Engine starts normally.

    OK

    END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

    NG

  20. REPLACE KEY


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


    NEXT

  21. REREGISTER KEY


    1. Reregister the key (Refer to Service Bulletin).


    NEXT

  22. CHECK WHETHER ENGINE STARTS


    1. Check that the engine starts with an already registered vehicle 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 for without DPF) E

    A

    END (KEY (TRANSPONDER KEY MASTER TRANSMITTER) WAS DEFECTIVE)

    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