DTC B1780 Front Occupant Classification Sensor LH Circuit Malfunction: Description

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

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

DTC TROUBLE DETECTION CHART

DTC No.	DTC Detection Condition	Trouble Area
B1780	When one of following conditions is met: Occupant classification ECU detects line short signal, open signal, short to ground signal or short to B+ signal in the front occupant classification sensor LH circuit for 2 seconds Front occupant classification sensor LH malfunction Occupant classification ECU malfunction	Front seat wire RH Front seat RH (Front occupant classification sensor LH) Occupant classification ECU