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Diagnostic Trouble Code Chart

  1. DTCS FOR OCCUPANT CLASSIFICATION SYSTEM 

    If a trouble code is displayed during the DTC check, check the circuit listed for the code in the table below .

    OCCUPANT CLASSIFICATION SYSTEM 

    OCCUPANT CLASSIFICATION SYSTEM REFERENCE CHART

    DTC Code Detection Item Trouble Area
    B1771  Passenger Side Buckle Switch Circuit Malfunction
    1. Front seat inner belt assembly RH (Buckle switch RH)
    2. Occupant classification ECU
    3. Floor wire ((1))
    4. Instrument panel wire No. 3 ((2))
    B1780  Front Occupant Classification Sensor LH Circuit Malfunction
    1. Front seat back assembly RH (front occupant classification sensor LH)
    2. Occupant classification ECU
    3. Front seat wire RH
    B1781  Front Occupant Classification Sensor RH Circuit Malfunction
    1. Front seat back assembly RH (front occupant classification sensor RH)
    2. Occupant classification ECU
    3. Front seat wire RH
    B1782  Rear Occupant Classification Sensor LH Circuit Malfunction
    1. Front seat back assembly RH (rear occupant classification sensor LH)
    2. Occupant classification ECU
    3. Front seat wire RH
    B1783  Rear Occupant Classification Sensor RH Circuit Malfunction
    1. Front seat back assembly RH (front occupant classification sensor RH)
    2. Occupant classification ECU
    3. Front seat wire RH
    B1785  Front Occupant Classification Sensor LH Collision Detection
    1. Front seat back assembly RH (front occupant classification sensor LH)
    2. Occupant classification ECU
    B1786  Front Occupant Classification Sensor RH Collision Detection
    1. Front seat back assembly RH (front occupant classification sensor RH
    2. Occupant classification ECU
    B1787  Rear Occupant Classification Sensor LH Collision Detection
    1. Front seat back assembly RH (rear occupant classification sensor LH)
    2. Occupant classification ECU
    B1788  Rear Occupant Classification
    Sensor RH Collision Detection
    1. Front seat back assembly RH (rear occupant classification sensor RH)
    2. Occupant classification ECU
    B1790  Center Airbag Sensor Assembly Communication Circuit Malfunction
    1. Occupant classification ECU
    2. Center airbag sensor assembly
    3. Floor wire ((1))
    4. Instrument panel wire No. 3 ((2))
    B1793  Occupant Classification Sensor Power Supply Circuit Malfunction
    1. Occupant classification sensors
    2. Occupant classification ECU
    3. Front seat wire RH
    B1795  Occupant Classification ECU Malfunction
    1. Battery
    2. ECU-B Fuse
    3. Floor wire ((1))
    4. Instrument panel wire No. 3 ((2))
    5. Front seat inner belt assembly RH (Buckle switch RH) 6. Occupant classification ECU
    B1796  Sleep Operation Failure of Occupant Classification ECU
    1. Occupant classification ECU
    (1) with Side and curtain shield airbag
    (2) without Side and curtain shield airbag
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