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Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2007 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
  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 (Proceed to the page listed for that circuit).

    OCCUPANT CLASSIFICATION SYSTEM 

    DTC DETECTION CONDITION CHART

    DTC Code Detection Item Trouble Area
    B1771  Passenger Side Buckle Switch Circuit Malfunction
    1. Front seat inner belt assembly RH
    2. Occupant classification ECU
    3. Floor wire No. 2
    B1780  Front Occupant Classification Sensor LH Circuit Malfunction
    1. Front seat assembly RH (Front occupant classification sensor LH)
    2. Occupant classification ECU
    3. Floor wire No. 2
    B1781  Front Occupant Classification Sensor RH Circuit Malfunction
    1. Front seat assembly RH (Front occupant classification sensor RH)
    2. Occupant classification ECU
    3. Floor wire No. 2
    B1782  Rear Occupant Classification Sensor LH Circuit Malfunction
    1. Front seat assembly RH (Rear occupant classification sensor LH)
    2. Occupant classification ECU
    3. Floor wire No. 2
    B1783  Rear Occupant Classification Sensor RH Circuit Malfunction
    1. Front seat assembly RH (Rear occupant classification sensor RH)
    2. Occupant classification ECU
    3. Floor wire No. 2
    B1785  Front Occupant Classification Sensor LH Collision Detection
    1. Front seat assembly RH (Front occupant classification sensor LH)
    2. Occupant classification ECU
    B1786  Front Occupant Classification Sensor RH Collision Detection
    1. Front sear assembly RH (Front occupant classification sensor RH)
    2. Occupant classification ECU
    B1787  Rear Occupant Classification Sensor LH Collision Detection
    1. Front seat assembly RH (Rear occupant classification sensor LH)
    2. Occupant classification ECU
    B1788  Rear Occupant Classification Sensor RH Collision Detection
    1. Front seat 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 No. 2
    B1793  Occupant Classification Sensor Power Supply Circuit Malfunction
    1. Front seat assembly RH (Occupant classification sensors)
    2. Floor wire No. 2
    3. Occupant classification ECU
    B1795  Occupant Classification ECU Malfunction
    1. Occupant classification ECU
    2. Floor wire No. 2
    3. Battery
    4. ECU-B Fuse
    5. Front sear inner belt assembly RH
    B1796  Sleep Operation Failure of Occupant Classification ECU Occupant classification ECU
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