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

DTC Code	DTC Detection Condition	Trouble Area
B1780	One of following conditions is met: Occupant classification ECU receives line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in front occupant classification sensor LH circuit for 2 seconds Front occupant classification sensor LH malfunction	Front seat with adjuster frame assembly RH (Front occupant classification sensor LH) Front seat wire RH

HINT:

When DTC B1650/32 is detected as a result of troubleshooting the airbag system, perform troubleshooting for DTC B1780 of the occupant classification system.
Use the Techstream to check for DTCs of the occupant classification ECU, otherwise the DTC cannot be read.