DTC B1780: Front Occupant Classification Sensor LH Circuit Malfunction: 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	Front seat wire RH Front seat cushion spring assembly (Front occupant classification sensor LH)

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.