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DTC B1783: Rear Occupant Classification Sensor RH Circuit Malfunction [08/2019 - ]: Description

The rear occupant classification sensor RH circuit consists of the occupant classification ECU and rear occupant classification sensor RH.

DTC B1783 is stored when a malfunction is detected in the rear occupant classification sensor RH circuit.

DTC Code DTC Detection Condition Trouble Area
B1783 One of the following conditions is met:
  • Occupant classification ECU detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to +B signal in the rear occupant classification sensor RH circuit for 2 seconds.
  • Rear occupant classification sensor RH malfunction.
  • Occupant classification ECU malfunction.
  • Separate type front seat cushion spring RH (Rear occupant classification sensor RH)
  • Front seat wire RH
  • Occupant classification ECU

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