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Home >> Toyota >> 2015 >> Prius Plug-in >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Immobiliser System (Diagnostics - Introduction) (Except Plug-In)) >> Engine Immobiliser System >> Diagnostic Trouble Code Chart [08/2014 - ] >> Diagnostic Trouble Code Chart [08/2014 - ]
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Diagnostic Trouble Code Chart [08/2014 - ]

WARNING: This page is about a different variant/trim than selected.

HINT: 

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 "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 Page
    B2784 Antenna Coil Open / Short 1. Wire harness or connector
    2. Power switch
    3. Certification ECU (Smart key ECU assembly)    		 Refer to DTC B2784: Antenna Coil Open / Short [08/2014 - ]
    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)    		 Refer to DTC B278A: Short to GND in Immobiliser System Power Source Circuit [08/2014 - ]
    B2790
    *2    		 ID BOX EEPROM Malfunction 1. ID code box (Immobiliser code ECU)
    2. Certification ECU (Smart key ECU assembly)    		 Refer to DTC B2790: ID BOX EEPROM Malfunction [08/2014 - ]

    *2: for Canada

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

    HINT: 

    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 Page
    B2799 Engine Immobiliser System Malfunction 1. Wire harness or connector
    2. Power management control ECU (HV CPU)
    3. Certification ECU (Smart key ECU assembly)*1
    4. ID code box (Immobiliser code ECU)*2    		 Refer to DTC B2799: Engine Immobiliser System Malfunction [08/2014 - ]
    B279A Theft Deterrent System Communication Line High Fixation 1. Wire harness or connector
    2. Power management control ECU (HV CPU)
    3. Certification ECU (Smart key ECU assembly)*1
    4. ID code box (Immobiliser code ECU)*2    		 Refer to DTC B279A: Theft Deterrent System Communication Line High Fixation [08/2014 - ]
    B279C Theft Deterrent System Presence Detection Power management control ECU (HV CPU) Refer to DTC B279C: Theft Deterrent System Presence Detection [08/2014 - ]
    • *1: except Canada
    • *2: for Canada
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