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Home >> Lexus >> 2021 >> RX 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Occupant Classification System - Diagnostic Codes & Symptom Tests >> Occupant Classification System >> DTC B1798: Yaw Rate Sensor Module Malfunction; DTC B1799: Vehicle Stability Control ECU Malfunction [09/2015 - 08/2019] >> Description
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DTC B1798: Yaw Rate Sensor Module Malfunction; DTC B1799: Vehicle Stability Control ECU Malfunction [09/2015 - 08/2019]: Description

The occupant detection ECU receives signals from the acceleration sensor (airbag sensor assembly *1 or yaw rate sensor assembly *2) and skid control ECU via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1798 Yaw Rate Sensor Module Malfunction Acceleration signals are abnormal
  • Acceleration sensor (Airbag sensor assembly *1 or Yaw rate sensor assembly *2)
  • CAN communication system
  • Occupant detection ECU
B1799 Vehicle Stability Control ECU Malfunction Vehicle speed signal from skid control ECU is abnormal
  • Skid control ECU (Brake actuator assembly)
  • CAN communication system
  • Occupant detection ECU
  1. *1: w/o VDIM
  2. *2: w/ VDIM