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Diagnostic Trouble Code Table

If a trouble code is displayed during the DTC check, check the circuit listed for the code in DIAGNOSTIC TROUBLE CODE TABLE  (proceed to the information listed for that circuit).

Occupant Classification ECU 

DIAGNOSTIC TROUBLE CODE TABLE

DTC No. Detection Item Trouble Area
B1771  Passenger Side Buckle Switch Circuit Malfunction
  1. No. 1 seat wire
  2. Front seat inner belt assembly (Buckle switch RH)
  3. Occupant classification ECU
B1780  Front Occupant Classification Sensor LH Circuit Malfunction
  1. No. 1 seat wire
  2. Front seat assembly RH (Front occupant classification sensor LH)
  3. Occupant classification ECU
B1781  Front Occupant Classification Sensor RH Circuit Malfunction
  1. No. 1 seat wire
  2. Front seat assembly RH (Front occupant classification sensor RH)
  3. Occupant classification ECU
B1782  Rear Occupant Classification Sensor LH Circuit Malfunction
  1. No. 1 seat wire
  2. Front seat assembly RH (Rear occupant classification sensor LH)
  3. Occupant classification ECU
B1783  Rear Occupant Classification Sensor RH Circuit Malfunction
  1. No. 1 seat wire
  2. Front seat assembly RH (Front occupant classification sensor RH)
  3. Occupant classification ECU
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 seat 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. No. 1 seat wire
  2. Floor wire
  3. Occupant classification ECU
  4. Center airbag sensor assembly
B1793  Occupant Classification Sensor Power Supply Circuit Malfunction
  1. No. 1 seat wire
  2. Front seat assembly RH (Occupant classification sensors)
  3. Occupant classification ECU
B1794  Open in Occupant Classification ECU Battery Positive Line
  1. Wire harness
  2. Occupant classification ECU
B1795  Occupant Classification ECU Malfunction
  1. Occupant classification ECU
B1796  Sleep Operation Failure of Occupant Classification ECU
  1. Occupant classification ECU
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