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Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2009 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) DIAGNOSTIC TROUBLE CODE CHART 

    Main Body ECU (Instrument Panel Junction Block) 

    MAIN BODY ECU - DIAGNOSTIC TROUBLE CODE CHART

    DTC Code Detection Item Trouble Area See
    B2287 LIN Communication Master Malfunction
    1. Certification ECU (smart key ECU assembly)
    2. Main body ECU (instrument panel junction block)
    3. Wire harness or connector
    DTC B2287 LIN COMMUNICATION MASTER MALFUNCTION 
  2. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) DIAGNOSTIC TROUBLE CODE CHART 

    Certification ECU (Smart Key ECU Assembly) 

    CERTIFICATION ECU - DIAGNOSTIC TROUBLE CODE CHART

    DTC Code Detection Item Trouble Area See
    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 (steering lock actuator assembly)
    4. ID code box (immobilizer code ECU)
    5. Wire harness or connector
    DTC B2785 COMMUNICATION MALFUNCTION BETWEEN ECUS CONNECTED BY LIN 
    B2786 No Response from Steering Lock ECU
    1. Steering lock ECU (steering lock actuator assembly)
    2. Certification ECU (smart key ECU assembly)
    3. Wire harness or connector
    DTC B2786 NO RESPONSE FROM STEERING LOCK ECU 
    B2789 No Response from ID BOX
    1. ID code box (immobilizer code ECU)
    2. Certification ECU (smart key ECU assembly)
    3. Wire harness or connector
    DTC B2789 NO RESPONSE FROM ID BOX