ENGINE IMMOBILISER 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 the "See page" below.


  1. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) DIAGNOSTIC TROUBLE CODE CHART

    Certification ECU (Smart Key ECU Assembly)
    DTC Code Detection Item Trouble Area See page
    B2784 Antenna Coil Open / Short

    1. Wire harness or connector

    2. Power switch

    3. Certification ECU (Smart key ECU assembly)

    Click here

    B278A Short to GND in Immobiliser System Power Source Circuit

    1. Wire harness or connector

    2. Power switch

    3. Certification ECU (Smart key ECU assembly)

    Click here

    B2790 ID BOX EEPROM Malfunction

    1. ID code box (Immobiliser code ECU)

    2. Certification ECU (Smart key ECU assembly)

    Click here

  2. POWER MANAGEMENT CONTROL ECU (HV CPU) DIAGNOSTIC TROUBLE CODE CHART

    Tech Tips

    The DTCs for the engine immobiliser system are specified above. If the other codes are output, check the DTC chart for the hybrid vehicle control system.

    Power Management Control ECU (HV CPU)
    DTC Code Detection Item Trouble Area See page
    B2799 Engine Immobiliser System Malfunction

    1. Wire harness or connector

    2. Power management control ECU (HV CPU)

    3. ID code box (Immobiliser code ECU)

    Click here

    B279A Theft Deterrent System Communication Line High Fixation

    1. Wire harness or connector

    2. Power management control ECU (HV CPU)

    3. ID code box (Immobiliser code ECU)

    Click here

    B279C Theft Deterrent System Presence Detection Power management control ECU (HV CPU)

    Click here