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Home >> Lexus >> 2008 >> SC 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 35 (Supplemental Restraint System) >> Airbag System >> DTC B1650/32 Occupant Classification System Malfunction >> Description

DTC B1650/32 Occupant Classification System Malfunction: Description

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

The occupant classification system circuit consists of the center airbag sensor and the occupant classification system.

If the center airbag sensor receives signals from the occupant classification ECU, it determines whether the front passenger airbag, the front seat side airbag RH and front seat outer belt should be operated. DTC B1650/32 is recorded when a malfunction is detected in the occupant classification system circuit.

DTC TROUBLE DETECTION CONDITION CHART

DTC No. Detection Condition Trouble Area
B1650/32 When all conditions below are met:
  • Occupant classification system malfunction
  • The center airbag sensor receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the occupant classification system circuit for 2 seconds.
  • Center airbag sensor malfunction
  • Floor wire
  • Front seat wire RH
  • Occupant classification system
  • Center airbag sensor