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Immobilizer System Check

  1. Connect the HDS to the data link connector.
  1. Turn the ignition switch to ON (II).
  1. Monitor the System Check in the Immobilizer Info with the HDS.
  1. If the HDS displays the ‘‘Immobilizer system is normal'', the immobilizer system is OK. If the HDS displays any other messages, check as follows:
    System Check No.
    System Check
    Possible Failures
    N-1
    Normal
    ———
    A-1
    The key is not registered
    • This key is not registered in the immobilizer-keyless control unit. Try to register keys by using ‘‘KEYS''.
    • The communication was not good between the antenna and the immobilizer key by influence of metal such as key chains.
    • The communication was not good between the antenna and the immobilizer key by battery voltage low.
    A-2
    Communication error between the key and immobilizer-keyless control unit
    • Intermittent interruption between transponder and immobilizer-keyless control unit.
    • The immobilizer key type is different. It is not for this vehicle but for another one or for other company's one.
    • Key failure (transponder failure)
    • The communication was not good between the antenna and the immobilizer key by influence of metal such as key chains.
    • The communication was not good between the antenna and the immobilizer key by battery voltage low.
    A-3
    No communication between the key and immobilizer-keyless control unit
    • The ignition switch was turned to ON (II) with a non-immobilizer key.
    • The immobilizer key type is different. It is not for this vehicle but for another one or for other company's one.
    • Key failure (transponder failure)
    • The communication was not good between the antenna and the immobilizer key by influence of metal such as key chains.
    • The communication was not good between the antenna and the immobilizer key by battery voltage low.
    • Immobilizer-keyless control unit failure
    B-1
    The ECM/PCM is not registered
    • The ECM/PCM was not registered. Try to register the ECM/PCM by using ‘‘REPLACE ECM/PCM''.
    • The communication was not good between the ECM/PCM and the immobilizer-keyless control unit by battery voltage low.
    • The communication was not good between the immobilizer-keyless control unit and the ECM/PCM by influence of some noise.
    B-2
    Error of communication format in ECM/PCM
    • The ECM/PCM was not registered. Try to register the ECM/PCM by using ‘‘REPLACE ECM/PCM''.
    • The communication was not good between the ECM/PCM and the immobilizer-keyless control unit by battery voltage low.
    • The communication was not good between the immobilizer-keyless control unit and the ECM/PCM by influence of some noise.
    D-1
    S-net line short
    • Harness short from the ECM/PCM to the immobilizer-keyless control unit. (IMOCD/S-NET line short)
    • The communication was not good between the ECM/PCM and the immobilizer-keyless control unit by battery voltage low.
    • The communication was not good between the immobilizer-keyless control unit and the ECM/PCM by influence of some noise.
    • Immobilizer-keyless control unit failure
    • ECM/PCM failure
    D-3
    No communication between the ECM/PCM and immobilizer-keyless control unit
    • Blown fuse
    • Harness open from the ECM/PCM to the immobilizer-keyless control unit.
    • The communication was not good between the ECM/PCM and the immobilizer-keyless control unit by battery voltage low.
    • The communication was not good between the immobilizer-keyless control unit and the ECM/PCM by influence of some noise.
    • Immobilizer-keyless control unit failure
    • ECM/PCM failure
    E-1
    Initial registration of immobilizer-keyless control unit is not completed
    The key was not registered. Try to register keys by using ‘‘REPLACE IMMOBILIZER-KEYLESS CONTROL UNIT''.
    E-2
    The ECM/PCM was not registered. Try to register the ECM/PCM by using ‘‘REPLACE ECM/PCM''.
    E-3
    The MICU was not registered. Try to register the MICU by using ‘‘REPLACE MICU''.
    E-4
    The immobilizer-keyless control unit was not registered. Try to register the IMMOBILIZER-KEYLESS CONTROL UNIT by using ‘‘REPLACE IMMOBILIZER-KEYLESS CONTROL UNIT''.
    E-5
    • The MICU was not registered. Try to register the MICU by using ‘‘REPLACE MICU''.
    • MICU failure
    F-1
    Special mode
    Immobilizer system is under registration mode. Turn the ignition switch to lock (0) and ON (II) so as to change normal mode.
    F-2
    F-3
    F-4
    F-5
    F-6