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Home >> Lexus >> 2008 >> LX 570 >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System >> Occupant Classification System >> Diagnostic Trouble Code Chart

Diagnostic Trouble Code Chart

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Occupant Classification System 

DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area Passenger Airbag ON/OFF Indicator (OFF Indicator)
B1771  Passenger Side Buckle Switch Circuit Malfunction
  • Front seat wire RH
  • Front seat inner belt assembly RH (passenger side buckle switch)
  • No 1 seat cushion assembly (occupant classification ECU)
On
B1772  Seat Position Sensor Circuit Malfunction
  • Front seat wire RH
  • Seat position sensor
  • No 1 seat cushion assembly (occupant classification ECU)
On
B1773  Belt Tension Sensor Circuit Malfunction
  • Front seat wire RH
  • Front seat outer belt assembly RH (seat belt tension sensor)
  • No. 1 seat cushion assembly (occupant classification ECU)
On
B1774  Pressure Sensor Circuit Malfunction
  • Front seat wire RH
  • No 1 seat cushion assembly (occupant classification ECU and occupant detection sensor)
On
B1775  Pressure Sensor Power Source Circuit Malfunction
  • Front seat wire RH
  • No 1 seat cushion assembly (occupant classification ECU and occupant detection sensor)
On
B1776  Seat Belt Tension Sensor Power Source Circuit Malfunction
  • Front seat wire RH
  • Front seat outer belt assembly RH (seat belt tension sensor)
  • No 1 seat cushion assembly (occupant classification ECU)
On
B1790  Center Airbag Sensor Assembly Communication Circuit Malfunction
  • No 2 floor wire
  • Front seat wire RH
  • No 1 seat cushion assembly (occupant classification ECU)
  • Center airbag sensor assembly
On
B1795  Occupant Classification ECU Malfunction
  • No 1 seat cushion assembly (occupant detection sensor)
On
B1797  Calibration Malfunction
  • There is no malfunction if this DTC is not output again after performing occupant classification system zero point calibration
  • No 1 seat cushion assembly (occupant detection sensor)
On