LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2007 >> Element SC, Standard >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Immobilizer System >> System Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

System Check

  1. Connect the HDS to the data link connector.
  2. Turn the ignition switch ON (II).
  3. Monitor the System Check in the Immobilizer Info with the HDS.
  4. 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

    Status Log No. System Check Possible Failures
    A-1 The key is not registered
    • This key is not registered in the immobilizer control unit-receiver. Try to register keys using the HDS.
    • No communication between the antenna and the immobilizer key because of interference from metal such as key chains/key rings/other keys.
    • Low battery voltage.
    A-2 Communication error between the key and immobilizer control unit-receiver
    • Intermittent interruption between transponder and immobilizer control unit-receiver.
    • The immobilizer key type is different. It is not for this vehicle but for another one or for another company's one.
    • Key failure (transponder failure)
    • No communication between the antenna and the immobilizer key because of interference from metal such as key chains/key rings/other keys.
    • Low battery voltage.
    A-3 No communication between the key and immobilizer control unit-receiver
    • 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 another company's one.
    • Key failure (transponder failure)
    • No communication between the antenna and the immobilizer key because of interference from metal such as key chains/key rings/other keys.
    • Low battery voltage.
    • Immobilizer control unit-receiver failure
    B-1 The ECM/PCM is not registered.
    • The ECM/PCM was not registered. Try to register the ECM/PCM using the HDS.
    • No communication between the ECM/PCM and the immobilizer control unit-receiver because of low battery voltage.
    • No communication between the immobilizer control unit-receiver and the ECM/PCM because of interference.
    • Open in the IG1 line.
    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".
    • No communication between the ECM/PCM and the immobilizer control unit-receiver because of low battery voltage.
    • No communication between the immobilizer control unit-receiver and the ECM/PCM because of interference.
    C-1 The imoes unit is not registered
    • Imoes unit was not registered.
    • No communication between the imoes unit and the immobilizer control unit-receiver because of low battery voltage.
    • No communication between the imoes unit and the immobilizer control unit-receiver because of interference.
    C-2 Error of communication format in imoes unit
    • Imoes unit was not registered.
    • No communication between the imoes unit and the immobilizer control unit-receiver because of low battery voltage.
    • No communication between the imoes unit and the immobilizer control unit-receiver because of interference.
    D-1 Immobilizer system is not normal
    • Harness short from the ECM/PCM to the immobilizer control unit-receiver. (IMOCD line short)
    • The communication was not good between the ECM/PCM and the immobilizer control unit-receiver by battery voltage low.
    • The communication was not good between the immobilizer control unit-receiver and the ECM/PCM by influence of some noise.
    • Immobilizer control unit-receiver failure
    • ECM/PCM failure
    D-2 No communication between imoes unit and immobilizer unit
    • Blown fuse
    • Open in the wire between the imoes unit and the immobilizer control unit-receiver. (IMOCD (S-NET) line open)
    • No communication between the imoes unit and the immobilizer control unit-receiver because of low battery voltage.
    • No communication between the imoes unit and the immobilizer control unit-receiver because of interference.
    • Immobilizer control unit-receiver failure
    • Imoes unit failure
    D-3 No communication between ECM/PCM and immobilizer unit
    • Blown fuse
    • Harness open from the ECM/PCM to the immobilizer control unit-receiver (IMOCD line open).
    • The communication was not good between the ECM/PCM and the immobilizer control unit-receiver by battery voltage low.
    • The communication was not good between the immobilizer control unit-receiver and the ECM/PCM by influence of some noise.
    • Immobilizer control unit-receiver failure
    • ECM/PCM failure
    E-1 Initial registration of immobilizer control unit-receiver is not completed The immobilizer control unit-receiver is not registered. Try to register the immobilizer control unit-receiver using the HDS.
    E-2
    E-3
    E-4
    E-5
    F-1 Special Mode Turn the ignition switch to ON (II) and to LOCK (0) with the registered key.
    F-2
    F-3
    F-4
    F-5
scientia non olet · About LEMON Manuals