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IMMOBILISER SYSTEM(w/ Entry and Start System) Immobiliser System does not Operate Properly

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DTC Code DTC Name
  Immobiliser System does not Operate Properly
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DESCRIPTION

The immobiliser system compares the ID code that is registered in the certification ECU (smart key ECU assembly) with the ID code of the transponder chip that is embedded in the electrical key transmitter sub-assembly.

The system unsets if these ID codes match. Thus, the certification ECU (smart key ECU assembly) and the ECM communicate with each other enabling the engine to start.

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WIRING DIAGRAM

Refer to B2799.

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CAUTION / NOTICE / HINT

Note:

  • When using the GTS with the vehicle engine switch off, connect the GTS to the DLC3 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 / Entry&Start(CAN). 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.

  • The immobiliser system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the immobiliser system after confirming that the communication systems are functioning properly.

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  • Before replacing the certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU)* or ECM, refer to Service Bulletin.

    *: w/ ID Code Box (Immobiliser Code ECU)

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation."

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Tip:

When the ECM and certification ECU (smart key ECU assembly) DTC are output simultaneously, first perform troubleshooting for the ECM and certification ECU (smart key ECU assembly) DTC.

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PROCEDURE


  1. Click here

    CHECK FOR DTC


    1. Check for DTCs.

      Click here


      1. Body Electrical > Entry&Start > Trouble Codes



      1. Powertrain > Engine > Trouble Codes


      Result
      Result Proceed to
      DTCs are not output (for SFI System) A
      DTCs are not output (for ECD System) B
      DTCs are output C

  2. Click here

    READ VALUE USING GTS (IMMOBILISER FUEL CUT)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

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


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



      1. Powertrain > Engine > Data List
        Tester Display
        Immobiliser Fuel Cut




      OK
      OFF is displayed after the engine is started.
      Result
      Proceed to
      OK (for 2TR-FE)
      OK (for 1GR-FE)
      NG

  3. Click here

    CHECK WHETHER ENGINE STARTS


    1. Check that the engine starts 5 seconds after the engine switch turned on (IG).

      OK
      Engine starts normally.
      Result
      Proceed to
      OK
      NG

  4. Click here

    INSPECT ECM (TERMINAL IMI AND IMO)


    1. B0027XUC01
      *A for 2TR-FE (for Automatic Transmission) *B for 2TR-FE (for Manual Transmission)
      *C for 1GR-FE - -
      *1 Waveform (IMO) *2 Waveform (IMI)
      *3 Waveform A *4 Waveform B
      *5 Waveform C - -
      *a

      Component with harness connected

      (ECM)

      		 *b Approximately 160 ms
      *c Approximately 270 ms *d Approximately 40 ms
      *e Approximately 60 ms - -

      Using an oscilloscope, check the waveform. (for Gasoline)

      Tip:

      The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Measurement Condition
      Item Content
      Tester Connection

      G45-9 (IMO) - Body ground*1

      G45-10 (IMI) - Body ground*1

      G88-8 (IMO) - Body ground*2

      G88-10 (IMI) - Body ground*2
      Tool Setting 2 V/DIV., 500 ms./DIV.
      Condition Within 3 seconds after engine starts, or within 3 seconds after engine switch turned on (IG) after battery disconnected and reconnected

      • *1: for 2TR-FE

      • *2: for 1GR-FE

    2. B0026WQC01
      *A for 2KD-FTV *B for 1GD-FTV, 2GD-FTV
      *1 Waveform (IMO) *2 Waveform (IMI)
      *3 Waveform A *4 Waveform B
      *5 Waveform C - -
      *a

      Component with harness connected

      (ECM)

      		 *b Approximately 160 ms
      *c Approximately 270 ms *d Approximately 40 ms
      *e Approximately 60 ms - -

      Using an oscilloscope, check the waveform. (for Diesel)

      Tip:

      The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Measurement Condition
      Item Content
      Tester Connection

      G83-29 (IMO) - Body ground*1

      G83-30 (IMI) - Body ground*1

      G86-17 (IMO) - Body ground*2

      G86-16 (IMI) - Body ground*2
      Tool Setting 2 V/DIV., 500 ms./DIV.
      Condition Within 3 seconds after engine starts, or within 3 seconds after engine switch turned on (IG) after battery disconnected and reconnected

      • *1: for 2KD-FTV

      • *2: for 1GD-FTV, 2GD-FTV

      Result
      Result Proceed to
      Normal waveform A
      Waveform A not output, or has abnormal wavelength or shape (w/ ID Code Box (Immobiliser Code ECU)) B
      Waveform A not output, or has abnormal wavelength or shape (w/o ID Code Box (Immobiliser Code ECU)) C
      Waveform B not output, or has abnormal wavelength or shape (for 2TR-FE) D
      Waveform B not output, or has abnormal wavelength or shape (for 2KD-FTV) E
      Waveform B not output, or has abnormal wavelength or shape (for 1GD-FTV) F
      Waveform B not output, or has abnormal wavelength or shape (for 2GD-FTV) G
      Waveform B not output, or has abnormal wavelength or shape (for 1GR-FE) H
      Waveform C not output, or has abnormal wavelength or shape (w/ ID Code Box (Immobiliser Code ECU)) I
      Waveform C not output, or has abnormal wavelength or shape (w/o ID Code Box (Immobiliser Code ECU)) J

  5. Click here

    REGISTER ECU COMMUNICATION ID


    1. Reregister the ECU communication ID.

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  6. Click here

    CHECK WHETHER ENGINE STARTS


    1. Using a registered vehicle key, turn the engine switch on (IG).

      OK
      Engine starts normally.
      Result
      Proceed to
      OK
      NG (w/ ID Code Box (Immobiliser Code ECU))
      NG (w/o ID Code Box (Immobiliser Code ECU))

    • OK

      END (COMMUNICATION ID REGISTRATION WAS DEFECTIVE)

    • NG (w/ ID Code Box (Immobiliser Code ECU))Click here
    • NG (w/o ID Code Box (Immobiliser Code ECU))Click here
  7. Click here

    CHECK HARNESS AND CONNECTOR (ID CODE BOX (IMMOBILISER CODE ECU) - ECM)


    1. Disconnect the G82 ID code box (immobiliser code ECU) connector.

    2. Disconnect the G86*1 or G88*2 ECM connector.


      • *1: for 1GD-FTV, 2GD-FTV

      • *2: for 1GR-FE

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

      Standard Resistance
      Table 1. for 1GD-FTV, 2GD-FTV
      Tester Connection Condition Specified Condition
      G82-4 (EFIO) - G86-16 (IMI) Always Below 1 Ω
      G86-16 (IMI) - Body ground Always 10 kΩ or higher
      G82-4 (EFIO) - Body ground Always 10 kΩ or higher
      Table 2. for 1GR-FE
      Tester Connection Condition Specified Condition
      G82-4 (EFIO) - G88-10 (IMI) Always Below 1 Ω
      G88-10 (IMI) - Body ground Always 10 kΩ or higher
      G82-4 (EFIO) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here

      GO TO STEP 8

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. Click here

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)


    1. Replace the ID code box (immobiliser code ECU) with a new one.

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  9. Click here

    REGISTER RECOGNITION CODES


    1. Register the recognition codes in the ECUs.

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  10. Click here

    REGISTER ECU COMMUNICATION ID


    1. Reregister the ECU communication ID.

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  11. Click here

    CHECK WHETHER ENGINE STARTS


    1. Using a registered vehicle key, turn the engine switch on (IG).

      OK
      Engine starts normally.
      Result
      Result Proceed to
      OK A
      NG (for 1GD-FTV) B
      NG (for 1GD-FTV (w/ DPF)) C
      NG (for 1GD-FTV (w/o EGR System)) D
      NG (for 1GD-FTV (w/o EGR Cooler)) E
      NG (for 2GD-FTV) F
      NG (for 2GD-FTV (w/ DPF)) G
      NG (for 2GD-FTV (w/ Urea SCR System)) H
      NG (for 2GD-FTV (w/o EGR Cooler)) I
      NG (for 2GD-FTV (w/o EGR System)) J
      NG (for 1GR-FE) K

  12. Click here

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ECM)


    1. Disconnect the G70 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the G45*1, G83*2, G86*3 or G88*4 ECM connector.


      • *1: for 2TR-FE

      • *2: for 2KD-FTV

      • *3: for 1GD-FTV, 2GD-FTV

      • *4: for 1GR-FE

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

      Standard Resistance
      Table 3. for 2TR-FE
      Tester Connection Condition Specified Condition
      G70-35 (EFIO) - G45-10 (IMI) Always Below 1 Ω
      G45-10 (IMI) - Body ground Always 10 kΩ or higher
      G70-35 (EFIO) - Body ground Always 10 kΩ or higher
      Table 4. for 2KD-FTV
      Tester Connection Condition Specified Condition
      G70-35 (EFIO) - G83-30 (IMI) Always Below 1 Ω
      G83-30 (IMI) - Body ground Always 10 kΩ or higher
      G70-35 (EFIO) - Body ground Always 10 kΩ or higher
      Table 5. for 1GD-FTV, 2GD-FTV
      Tester Connection Condition Specified Condition
      G70-35 (EFIO) - G86-16 (IMI) Always Below 1 Ω
      G86-16 (IMI) - Body ground Always 10 kΩ or higher
      G70-35 (EFIO) - Body ground Always 10 kΩ or higher
      Table 6. for 1GR-FE
      Tester Connection Condition Specified Condition
      G70-35 (EFIO) - G88-10 (IMI) Always Below 1 Ω
      G88-10 (IMI) - Body ground Always 10 kΩ or higher
      G70-35 (EFIO) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here

      GO TO STEP 13

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  13. Click here

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace the certification ECU (smart key ECU assembly) with a new one.

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  14. Click here

    REGISTER RECOGNITION CODES


    1. Register the recognition codes in the ECUs.

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  15. Click here

    REGISTER ECU COMMUNICATION ID


    1. Reregister the ECU communication ID.

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  16. Click here

    CHECK WHETHER ENGINE STARTS


    1. Using a registered vehicle key, turn the engine switch on (IG).

      OK
      Engine starts normally.
      Result
      Result Proceed to
      OK A
      NG (for 2TR-FE) B
      NG (for 2KD-FTV) C
      NG (for 1GD-FTV) D
      NG (for 1GD-FTV (w/ DPF)) E
      NG (for 1GD-FTV (w/o EGR System)) F
      NG (for 1GD-FTV (w/o EGR Cooler)) G
      NG (for 2GD-FTV) H
      NG (for 2GD-FTV (w/ DPF)) I
      NG (for 2GD-FTV (w/o EGR Cooler)) J
      NG (for 2GD-FTV (w/o EGR System)) K
      NG (for 1GR-FE) L