ENGINE IMMOBILISER SYSTEM (w/o Smart Entry and Start System) DIAGNOSTIC TROUBLE CODE CHART

Tech Tips

If a trouble code is stored during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to "See page" below.


  1. TRANSPONDER KEY ECU DIAGNOSTIC TROUBLE CODE CHART

    Transponder Key ECU Assembly
    DTC Code Detection Item Trouble Area See page
    B2780 Push Switch / Key Unlock Warning Switch Malfunction

    1. Wire harness or connector

    2. Unlock warning switch assembly

    3. Transponder key ECU assembly

    Click here

    B2784 Antenna Coil Open / Short

    1. Wire harness or connector

    2. Transponder key amplifier

    3. Transponder key ECU assembly

    Click here

    B2793 Transponder Chip Malfunction Key

    Click here

    B2794 Unmatched Encryption Code Key

    Click here

    B2795 Unmatched Key Code Key

    Click here

    B2796 No Communication in Immobiliser System

    1. Key

    2. Transponder key amplifier

    3. Transponder key ECU assembly

    Click here

    B2797 Communication Malfunction No. 1

    1. Key

    2. Transponder key amplifier

    3. Transponder key ECU assembly

    Click here

    B2798 Communication Malfunction No. 2

    1. Key

    2. Transponder key amplifier

    3. Transponder key ECU assembly

    Click here

  2. ECM DIAGNOSTIC TROUBLE CODE CHART

    Tech Tips

    The DTCs for the engine immobiliser system are specified below. If other codes are output, check the DTC chart for the SFI system.

    ECM
    DTC Code Detection Item Trouble Area See page
    B2799 Engine Immobiliser System Malfunction

    1. Wire harness or connector

    2. ECM

    3. Transponder key ECU assembly

    Click here

    B279A Theft Deterrent System Communication Line High Fixation

    1. Wire harness or connector

    2. Transponder key ECU assembly

    3. ECM

    Click here

    B279C Theft Deterrent System Presence Detection ECM

    Click here