DTC B1780: Front Occupant Classification Sensor LH Circuit Malfunction [08/2014 - ]: Description

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

DTC B1780 is stored when a malfunction is detected in the front occupant classification sensor LH circuit.

DTC No.	DTC Detection Condition	Trouble Area
B1780	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 LH circuit. Front occupant classification sensor LH malfunction Occupant classification ECU malfunction	Front seat wire RH Front seat cushion spring assembly RH (Front occupant classification sensor LH) Occupant classification ECU

HINT:

When DTC B1650/32 is detected as a result of troubleshooting for the airbag system, check the DTCs stored in the occupant classification ECU. When DTC B1780 is output, perform troubleshooting for the DTC.