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Diagnostic Trouble Code Chart

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

    DTC Code Detection Item Trouble Area Refer To
    B2784 Antenna Coil Open / Short 1. Wire harness or connector
    2. Engine switch
    3. Certification ECU (smart key ECU assembly)    		 Refer to DTC B2784: Antenna Coil Open / Short
    B2785 Communication Malfunction between ECUs Connected by LIN 1. Certification ECU (smart key ECU assembly)
    2. Main body ECU (instrument panel junction block)
    3. Steering lock ECU
    4. ID code box (immobiliser code ECU)
    5. Wire harness or connector    		 Refer to DTC B2785: Communication Malfunction between ECUs Connected by LIN
    B2786 No Response from Steering Lock ECU 1. Steering lock ECU
    2. Certification ECU (smart key ECU assembly)
    3. Wire harness or connector    		 Refer to DTC B2786: No Response from Steering Lock ECU
    B2789 No Response from ID BOX 1. ID code box (immobiliser code ECU)
    2. Certification ECU (smart key ECU assembly)
    3. Wire harness or connector    		 Refer to DTC B2789: No Response from ID BOX
    B278A Short to GND in Immobiliser System Power Source Circuit 1. Wire harness or connector
    2. Engine switch
    3. Certification ECU (smart key ECU assembly)    		 Refer to DTC B278A: Short to GND in Immobiliser System Power Source Circuit
    B2790 ID BOX EEPROM Malfunction ID code box (immobiliser code ECU) Refer to DTC B2790: ID BOX EEPROM Malfunction
  2. ECM DIAGNOSTIC TROUBLE CODE CHART 

    HINT: 

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

    ECM

    DTC Code Detection Item Trouble Area Refer To
    B2799 Engine Immobiliser System Malfunction 1. Wire harness or connector
    2. ECM
    3. ID code box (immobiliser code ECU)    		 Refer to DTC B2799: Engine Immobiliser System Malfunction
    B279A Theft Deterrent System Communication Line High Fixation 1. Wire harness or connector
    2. ECM
    3. ID code box (immobiliser code ECU)    		 Refer to DTC B279A: Theft Deterrent System Communication Line High Fixation
    B279C Theft Deterrent System Presence Detection ECM Refer to DTC B279C: Theft Deterrent System Presence Detection
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