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Engine Immobilizer System: Registration

  1. DESCRIPTION OF CODE REGISTRATION 
    1. When adding master keys and sub-keys (additional registration).
      1. Register the key code (immobilizer code) in the transponder key ECU.
      TARGET ECU AND STEP

      Target ECU See Step
      Transponder key ECU  3
    2. When replacing the transponder key ECU (new registration).
      1. Register the key code (immobilizer code) in the transponder key ECU.
        TARGET ECU AND STEP

        Target ECU See Step
        Transponder key ECU  2
      2. Register the ECU COMMUNICATION ID between the ECM and the transponder key ECU.
        TARGET ECU AND STEP

        Target ECU See Step
        ECM  5
    3. When replacing the ECM.
      1. Register the ECU COMMUNICATION ID between the ECM and the transponder key ECU.
      TARGET ECU AND STEP

      Target ECU See Step
      Transponder key ECU  5
    4. When erasing the key code.
      1. Erase the key code.
      TARGET ECU AND STEP

      Target ECU See Step
      Transponder key ECU  4
  2. KEY REGISTRATION IN AUTOMATIC REGISTRATION (NEW REGISTRATION) 
    1. When an ignition key is inserted into the ignition key cylinder, the key code (immobilizer code) registration is automatic. In this mode, a maximum of 5 key codes for 3 master keys and 2 sub-keys can be registered. Any order of registration for the master keys and sub-keys is fine because the transponder key ECU can distinguish between different types of keys.

      HINT:

      • When a new transponder key ECU is installed, key codes (immobilizer codes) must be registered in the transponder key ECU.
      • New transponder key ECUs are automatically set to automatic key code registration mode.
      Fig 1: Automatic Key Code Registration (New Registration) Flow Chart
      G03071910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • When no key is inserted into the ignition key cylinder in automatic key code registration mode, the security indicator lamp remains ON.
      • When the immobilizer system is operating normally and the key is pulled out, the security indicator lamp blinks continuously.
      • If the key code registration has failed in automatic key code registration mode, code 2-1 will be output from the security indicator lamp. Trying to reregister an already registered key will cause code 2-2 to be output when the key is inserted. If the number of registered key codes exceeds the limit, code 2-3 will be output from the security indicator lamp. The output details are shown in Fig 2.
        Fig 2: Security Indicator Lamp Blinking Pattern
        G03071911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Finish the automatic key code registration mode.

      HINT:

      The automatic key code registration mode can be forced to end when at least 1 key code (immobilizer code) for the master key has been registered.

  3. REGISTRATION OF ADDITIONAL KEY (ADDITIONAL REGISTRATION) 
    1. Register an additional key using the hand-held tester.

      HINT:

      • A maximum of 5 master key codes and 3 sub-key codes can be registered.
      • Registration mode will end if each step is not completed within the specified time.
      • When the ignition key cylinder or the door key cylinder set is replaced, remove the transmitter module from the original master key. Then install this transmitter module to a new key and use the new key as the master key. If necessary, use this master key to register other keys.
      NOTE: When the ignition key cylinder has been replaced, locking and unlocking doors is possible with the new master key's transmitter module (taken from the original master key).

    Additional Registration 

    Fig 3: Additional Registration Flow Chart
    G03071912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    • A brief outline of procedures for key code registration is shown in this information. For more detailed information, please refer to the hand-held tester screen's instructions.
    • When the immobilizer system is operating normally and the key is pulled out, the security indicator lamp blinks continuously.
    • If the key code registration has failed in automatic key code registration mode, code 2-1 will be output from the security indicator lamp. Trying to reregister an already registered key will cause code 2-2 to be output when the key is inserted. If the number of registered key codes exceeds the limit, code 2-3 will be output from the security indicator lamp. The output details are shown in step  2 (new registration).
  4. ERASURE OF KEY CODE 
    1. Erase the key codes using the hand-held tester.

      HINT:

      • All key codes are erased except for the master key that is used to erase the key codes. In order to use a key whose code has been erased, a new key code must be registered.
      • Registration will be cancelled if each step is not completed within the specified time.
    Fig 4: Erasing Key Code Flow Chart
    G03071913Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    • A brief outline of procedures for key code erasure is shown in this information. For more detailed information, please refer to the hand-held tester screen's instructions.
    • When the immobilizer system is operating normally and the key is pulled out, the security indicator lamp blinks continuously.
  5. ECU COMMUNICATION ID REGISTRATION 
    NOTE:
    • If the transponder key ECU and/or ECM has been replaced, register the ECU COMMUNICATION ID to both in order to match their IDs.
    • The engine cannot be started unless the ECU COMMUNICATION ID matches.
    1. Register the ECU Communication ID.
      Fig 5: Connecting Terminals TC And CG Of DLC3
      G03071914Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using SST, connect terminals TC and CG of the DLC3.
        1. SST 09843-18040
      2. Turn the ignition switch ON (do not start the engine) and leave it as is for 30 minutes.
      3. Turn the ignition switch OFF and disconnect terminals TC and CG.
      4. Check that the engine starts.
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