DTC B1783: Rear Occupant Classification Sensor RH Circuit Malfunction [08/2013 - 08/2016]: Description

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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	The occupant detection ECU detects a line short, short to ground or B+, or an open in the rear occupant classification sensor RH circuit. Rear occupant classification sensor RH malfunction Occupant detection ECU malfunction	for TMMMS Made: Front seat wire RH Rear occupant classification sensor RH (Separate type front seat cushion spring assembly RH)* Occupant detection ECU for TMMC Made: Front seat wire RH Rear occupant classification sensor RH (Front seat adjuster sub-assembly RH)* Occupant detection ECU

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1783

Rear Occupant Classification Sensor RH Circuit Malfunction

The occupant detection ECU detects a line short, short to ground or B+, or an open in the rear occupant classification sensor RH circuit.
Rear occupant classification sensor RH malfunction
Occupant detection ECU malfunction

for TMMMS Made:

Front seat wire RH
Rear occupant classification sensor RH (Separate type front seat cushion spring assembly RH)*
Occupant detection ECU

for TMMC Made:

Front seat wire RH
Rear occupant classification sensor RH (Front seat adjuster sub-assembly RH)*
Occupant detection ECU

*: The rear occupant classification sensor RH is built into the separate type front seat cushion spring assembly RH or front seat adjuster sub-assembly RH.