DTC B1781: Front Occupant Classification Sensor RH Circuit Malfunction (2006/03-2006/10): Description

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

DTC B1781 is recorded when a malfunction is detected in the front occupant classification sensor RH circuit.

DTC DETECTION CONDITION TABLE

DTC No.	DTC Detecting Condition	Trouble Area
B1781	The occupant classification ECU 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 front occupant classification sensor RH circuit for 2 seconds. Front occupant classification sensor RH malfunction Occupant classification ECU malfunction	Front seat assembly RH (Front occupant classification sensor RH) Front seat wire RH Occupant classification ECU