ENGINE IMMOBILISER SYSTEM(w/ Entry and Start System) DATA LIST / ACTIVE TEST


  1. DATA LIST

    Note

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

    Tech Tips

    Using the intelligent tester to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Entry & Start / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Ignition Switch Engine switch status / OFF or ON

      OFF: Engine switch off

      ON: Engine switch on (IG)

      		 Use this Data List item to help determine the cause when all the entry and start system/wireless functions do not operate.
      #Codes Number of trouble codes / Min: 0, Max: 255 Number of stored DTCs displayed -
      Immobilizer when IG=ON Engine immobiliser system status when power source mode on (IG) / UNSET or SET

      UNSET: Engine immobiliser system not set with engine switch on (IG) or engine immobiliser system unset for 40 times after engine immobiliser system set

      SET: Engine immobiliser system set (driver door open and closed with engine switch on (IG))

      		 -
      Immobiliser Engine immobiliser system status determined by certification ECU (smart key ECU assembly) / Set or Unset

      Set: Engine immobiliser set (engine start prohibited) (engine switch off)

      Unset: Engine immobiliser unset (engine start permitted) [engine switch on (ACC) or on (IG)]

      		 If "Set" is displayed, the engine start function is prohibited.
      Master Key Whether master key ID code matches ID code registered in certification ECU (smart key ECU assembly) / No Match or Match

      No Match: ID code of master key does not match ID code registered in certification ECU (smart key ECU assembly)

      Match: ID code of master key matches ID code registered in certification ECU (smart key ECU assembly)

      • Always "Match" is displayed.

      • No diagnostic function.
      Sub Key Whether sub-key ID code matches ID code registered in certification ECU (smart key ECU assembly) / No Match or Match

      Match: ID code of sub key matches ID code registered in certification ECU (smart key ECU assembly)

      No Match: ID code of sub key does not match ID code registered in certification ECU (smart key ECU assembly)

      • Always "Match" is displayed.

      • No diagnostic function.
      BCC Malfunction BCC signal status of transponder chip*1 / OK or NG

      OK: BCC signal normal

      NG: BCC signal malfunction (malfunction in code computation in key/certification ECU (smart key ECU assembly)

      Problems may be caused by the following:


      • Communication errors due to external electric wave noise (LF).

      • Malfunctions in the electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly).
      Abnormal Status Transponder chip status signal*1 / OK or NG

      OK: Transponder chip status signal normal

      NG: Transponder chip status signal malfunction (malfunction in code computation in key/ certification ECU (smart key ECU assembly))

      Problems may be caused by the following:


      • Communication errors due to external electric wave noise (LF).

      • Malfunctions in the electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly).
      Different Encrypt Code Code status between transponder chip and certification ECU (smart key ECU assembly)*1 / OK or NG

      OK: Codes of transponder chip and certification ECU (smart key ECU assembly) match

      NG: Codes of transponder chip and certification ECU (smart key ECU assembly) do not match

      Problems may be caused by the following:


      • An electrical key transmitter sub-assembly from a different vehicle is being used.

      • Malfunctions in the electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly).
      Different Serial Number Vehicle serial number*1 / OK or NG

      OK: Signal from transponder chip and vehicle serial number stored in the certification ECU (smart key ECU assembly) match

      NG: Signal from transponder chip and vehicle serial number stored in the certification ECU (smart key ECU assembly) do not match

      Problems may be caused by the following:


      • An electrical key transmitter sub-assembly from a different vehicle is being used.

      • Malfunctions in the electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly).
      Frame Error State of data sent from electrical key transmitter sub-assembly / OK or NG

      OK: No problem with data sent from electrical key transmitter sub-assembly

      NG: Problem with data sent from electrical key transmitter sub-assembly

      • Always "OK" is displayed.

      • No diagnostic function.
      Response Electrical key transmitter sub-assembly response to signal from certification ECU (smart key ECU assembly) / OK or NG

      OK: Electrical key transmitter sub-assembly responds to signal from certification ECU (smart key ECU assembly)

      NG: Electrical key transmitter sub-assembly does not respond to signal from certification ECU (smart key ECU assembly)

      Problems may be caused by the following:


      • An electrical key transmitter sub-assembly from a different vehicle is being used.

      • Malfunctions in the electrical key transmitter sub-assembly, certification ECU (smart key ECU assembly) or engine switch.
      Engine Start Condition Engine start permission from certification ECU (smart key ECU assembly)*2 / NG or OK

      NG: Engine start prohibited by certification ECU (smart key ECU assembly)

      OK: Engine start permitted by certification ECU (smart key ECU assembly)

      		 -
      ID-BOX Sleep Condition ID code box (immobiliser code ECU) sleep mode status / No or Yes

      No: ID code box (immobiliser code ECU) sleep mode not possible

      Yes: ID code box (immobiliser code ECU) sleep mode possible

      		 -
      ID-BOX Start Condition ID code box (immobiliser code ECU) status*3 / No or Yes

      No: Wake-up signal not sent by ID code box (immobiliser code ECU)

      Yes: Wake-up signal sent by ID code box (immobiliser code ECU)

      		 -
      Engine Start Request Request from certification ECU (smart key ECU assembly) to ID code box (immobiliser code ECU) to permit ECM to start engine*4 / OK or NG

      OK: Engine start permission request signal from certification ECU (smart key ECU assembly) received by ID code box (immobiliser code ECU)

      NG: Engine start permission request signal not received by ID code box (immobiliser code ECU)

      		 If OK is not displayed, the immobiliser cannot be unset by the ECM.
      3bit Code Request 3-bit code request condition / OK or NG

      OK: 3-bit code request condition signal received (past)

      NG: 3-bit code request condition signal not received (past)

      		 -
      S Code Check S code verification result*5 / OK or NG

      OK: S code verification result normal

      NG: S code verification result abnormal

      Problems may be caused by the following:


      • Registration has not been performed for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU).

      • Malfunctions in the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU).
      L Code Check L code verification result*6 / OK or NG

      OK: L code verification result normal

      NG: L code verification result abnormal

      Problems may be caused by the following:


      • Registration has not been performed for the certification ECU (smart key ECU assembly) or steering lock actuator assembly (steering lock ECU).

      • Malfunctions in the certification ECU (smart key ECU assembly) or steering lock actuator assembly (steering lock ECU).
      Unlock Request Receive Status of steering unlock command from certification ECU (smart key ECU assembly)*7 / OK or NG

      OK: Certification ECU (smart key ECU assembly) sends steering unlock command (within 10 seconds of engine switch turned on (ACC) or on (IG), or of engine start operation performed)

      NG: Certification ECU (smart key ECU assembly) does not send steering unlock command (engine switch not turned on (ACC) or on (IG), and engine start operation not performed)

      		 If OK is not displayed even when the steering lock unlock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning.
      Lock Request Receive Status of steering lock command from certification ECU (smart key ECU assembly)*8 / OK or NG

      OK: Certification ECU (smart key ECU assembly) sends steering lock command (within 10 seconds of any door opened with shift lever in P (for CVT) and engine switch off)

      NG: Certification ECU (smart key ECU assembly) does not send steering lock command (no door opened with shift lever in P (for CVT) and engine switch off)

      		 If OK is not displayed even when the steering lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning.
      S Code Check (Past) S code verification result (past) / OK or NG(Past)

      OK: Verification confirmed (past)

      NG(Past): Verification not confirmed (past)

      		 -
      L Code Check (Past) L code verification result (past) / OK or NG(Past)

      OK: Verification confirmed (past)

      NG(Past): Verification not confirmed (past)

      		 -
      EFI Code Receive Certification information sent to ID code box (immobiliser code ECU) from ECM when ECM receives engine start permission signal from ID code box (immobiliser code ECU)*9 / OK or NG

      OK: Signal from ECM to unset engine immobiliser received by ID code box (immobiliser code ECU)

      NG: Signal from ECM to unset engine immobiliser not received by ID code box (immobiliser code ECU)

      		 -
      EFI Communication State of communication to unset immobiliser between certification ECU (smart key ECU assembly) and ECM / NG or OK

      NG: Communication to unset immobiliser has not started between certification ECU (smart key ECU assembly) and ECM

      OK: Communication to unset immobiliser has started between certification ECU (smart key ECU assembly) and ECM

      		 If the item displays "NG" even though the conditions to unset the immobiliser have been met and the Engine Start Request Data List item displays "OK", the ECM may be malfunctioning. When the engine cannot be started, use this Data List item during troubleshooting.

      Tech Tips


      • *1: This indicates that there is a problem with the communication format between the electrical key transmitter sub-assembly and certification ECU (smart key ECU assembly). Electric wave interference, electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly) malfunctions, the electrical key transmitter sub-assembly of another vehicle being used, etc. are possible causes.

      • *2: Engine start is permitted when it is confirmed that the steering is unlocked and there are no malfunctions in the steering lock system. If engine start is not permitted, a steering lock actuator assembly (steering lock ECU) malfunction (relay, driver, etc.), an IGE circuit malfunction (harness or connector, power source control ECU), or a steering lock sensor malfunction are possible causes.

      • *3: This indicates that transmission of the wake-up signal is possible ("Yes" indicates that the signal to begin verification-related LIN communication is being sent). When the steering lock motor is operating and an IGE ON signal is received (there is a steering lock operation request), or when communication is being performed between the ID code box (immobiliser code ECU) and ECM, the display changes to "Yes".

      • *4: This indicates that the engine start permission request signal (EGST) output from the certification ECU (smart key ECU assembly) is being received by the ID code box (immobiliser code ECU).

      • *5: This indicates the certification results of the certification codes of the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU).

      • *6: This indicates the certification results of the certification codes of the steering lock actuator assembly (steering lock ECU) and ID code box (immobiliser code ECU).

        When the steering lock actuator assembly (steering lock ECU) receives an unlock request from the certification ECU (smart key ECU assembly), confirmation of the ID code box (immobiliser code ECU) L code is performed. If the L code matches, the steering lock actuator assembly (steering lock ECU) unlocks the steering. However, if the S code verification result does not match, the steering lock will not be unlocked.

      • *7: The certification ECU (smart key ECU assembly) outputs a steering lock unlock request for 10 seconds after the engine switch is turned on (ACC) or on (IG), or an engine start operation is performed.

      • *8: The certification ECU (smart key ECU assembly) outputs a steering lock request for 10 seconds after the engine switch is turned off and any door is opened with the shift lever in P*.

        *: For CVT equipped vehicles as for the shift lever operation.

      • *9: This indicates that the ID code box (immobiliser code ECU) is receiving verification information from the ECM. If the ECM can send the information, the display changes to "OK".


      1. Refer to the following Data List items of an actual vehicle.

        A01VF11E01

        Tech Tips

        With the engine switch off and the shift lever in P*6 or N*7, perform the following procedures and check the power source mode.


        • *1: Without depressing the brake pedal*6, *7 or clutch pedal (for Manual Transaxle), press the engine switch and check that the power source mode turns on (ACC).

        • *2: Without depressing the brake pedal*6, *7 or clutch pedal*8, press the engine switch and check that the power source mode turns on (IG).

        • *3: Depress the brake pedal*6, *7 or clutch pedal*8 (the stop light switch or clutch switch turns on).

        • *4: Press the engine switch and check that the power source mode turns off.

        • *5: Open a door (steering lock operation starts when a door is opened).


          • *6: for CVT

          • *7: for Multi-Mode Manual Transaxle

          • *8: for Manual Transaxle