DTC B1771: Passenger Side Buckle Switch Circuit Malfunction: Description

The passenger side buckle switch circuit consists of the occupant classification ECU and the front seat inner belt RH.

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

Troubleshoot DTC B1771 first when DTCs B1771 and B1795 are output simultaneously.

DTC Code	DTC Detection Condition	Trouble Area
B1771	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 passenger side buckle switch circuit for 2 seconds Passenger side buckle switch malfunction Occupant classification ECU malfunction	Floor wire No. 2 Front seat inner belt RH (Buckle switch RH) Occupant classification ECU