Engine Immobilizer System : Registration

HINT:

The key has 2 codes: the key code (immobilizer code) and the wireless code. Both of these codes need to be registered. Refer to TRANSMITTER SUB-ASSY MODULE SET DOOR CONTROL  for the wireless code registration procedures.

1. When adding master keys and sub-keys (Additional registration):
   1. Register the key code (immobilizer code) in the transponder key ECU.
      Fig 1: Register Key Code (Immobilizer Code) In Transponder Key ECU Table

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2. When replacing the transponder key ECU (New registration):
   1. Register the key code (immobilizer code) in the transponder key ECU.
      Fig 2: Register Key Code (Immobilizer Code) In Transponder Key ECU Table

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Register the ECU COMMUNICATION ID between the ECM and the transponder key ECU.
      Fig 3: Register ECU Communication ID Between ECM And Transponder Key ECU Table

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. When replacing the ECM:
   1. Register the ECU COMMUNICATION ID between the ECM and the transponder key ECU.
      Fig 4: Register ECU Communication ID Between ECM And Transponder Key ECU

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE: After replacing the transponder key ECU, the engine will not start if the ignition switch has been repeatedly turned on/off more than 20 times before performing the communication code initialization process. The engine will start only when the transponder key ECU is replaced with a new one.

1. The new registration of the key codes (immobilizer codes) is made automatically.

   HINT:

   • When you install a new transponder key ECU, the key codes (immobilizer codes) must be registered.
   • A new transponder key ECU starts in the automatic key code registration mode. In this mode, a maximum of 4 key codes for 3 master keys and 1 sub-key can be registered. Since the transponder key ECU can distinguish types of keys, the registration order is not specified.
     Fig 5: Automatic Key Code Registration Flow Chart

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   HINT:

   • When no key is inserted in the ignition key cylinder in the automatic key code registration mode, the security indicator remains on.
   • When the immobilizer system is operating normally and the key is pulled out, the security indicator blinks.
   NOTE: If the key code registration has failed in the automatic key code registration mode, code 2-1 will be output from the security indicator. Trying to re-register an already registered key will cause code 2-2 to be output when the key is inserted. The system allows only a certain number of keys to be registered. Trying to register a key when maximum number has already been registered will cause code 2-3 to be output. The output details are shown below.
   Fig 6: Identifying Security Indicator Blinking Pattern

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2. Finish the automatic key code registration mode.

   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.

   1. Turn the ignition switch ON/OFF alternately 5 times within 10 seconds using the registered master key.

1. Register an additional key by 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 cylinder or the 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 it as a master key. If necessary, use this master key to register other keys.
   NOTE: When only the ignition key cylinder has been replaced, you can lock or unlock doors by wireless operation using the new key with built-in transmitter but not by inserting it in the door key cylinder. Therefore, keep the original key for door lock/unlock operation in order to avoid malfunctions caused by a dead transmitter battery in the new key.

Fig 7: Additional Key Registration Flow Chart

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

• A brief outline of procedures for key code registration is shown. For detailed information, please refer to the prompts on the screen of the hand-held tester.
• When the immobilizer system is operating normally and the key is pulled out, the security indicator blinks.

1. Erase key codes by using the hand-held tester.

   HINT:

   • All key codes are erased except for the master key which is used for erasing the key codes. In order to use a key whose code has been erased, it is necessary to register the key code again.
   • Registration operation will be cancelled if each step is not completed within the specified time.
     Fig 8: Erasing Key Code Flow Chart

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

• A brief outline of procedures for key code registration is shown. For detailed information, please refer to the prompts on the screen of the hand-held tester.
• When the immobilizer system is operating normally and the key is pulled out, the security indicator blinks.

1. Register the ECU communication ID.
   1. After the transponder key ECU and/or the ECM is replaced, turn the ignition switch ON (the engine is not running).
   2. Short the TC and CG terminals of the DLC3 and leave it as it is for 30 minutes.
   3. Check that the engine starts.

   HINT:

   After starting the engine, clear the ECM DTC B 2779 / 99 (malfunction in the engine immobilizer system communication) by following the procedures below.

   • Clear the DTC with the hand-held tester. (For detailed procedures, see PRE-CHECK ).
   • With the battery removed from the vehicle, leave it for more than 30 minutes.