DTC B1781 Front Occupant Classification Sensor RH Circuit Malfunction: Description

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 DETECTING CONDITION CHART

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) Occupant classification ECU Front seat wire RH

HINT:

When DTC B1650/32 is detected as a result of troubleshooting for "AIRBAG SYSTEM", check the DTCs stored in the occupant classification ECU. When DTC B1781 is output, perform troubleshooting for the DTC.