DTC B1771: Passenger Side Buckle Switch Circuit Malfunction [04/2013 - 09/2020]: Description

The passenger side buckle switch circuit consists of the occupant detection ECU and passenger side buckle switch (front seat inner belt assembly RH).

DTC B1771 is stored when a malfunction is detected in the passenger side buckle switch circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B1771	Passenger Side Buckle Switch Circuit Malfunction	The occupant detection ECU detects a line short, short to ground or B+, or an open in the passenger side buckle switch circuit. Passenger side buckle switch malfunction Occupant detection ECU malfunction	Front seat wire RH Passenger side buckle switch (Front seat inner belt assembly RH) Occupant detection ECU