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DTC B1783: Rear Occupant Classification Sensor RH Circuit Malfunction [12/2012 - ]: Description

The rear occupant classification sensor RH circuit consists of the occupant detection 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 No. Detection Item DTC Detection Condition Trouble Area
B1783 Rear Occupant Classification Sensor RH Circuit Malfunction One of the following conditions is met: 
  • Occupant detection 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 detection ECU malfunction.
  • Separate type front seat cushion spring assembly (Rear occupant classification sensor RH)
  • Front seat wire RH
  • Occupant detection ECU

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