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

DTC Code	DTC Detection Condition	Trouble Area
B1771	When one of the following conditions is met: The occupant classification ECU receives a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the passenger side buckle switch circuit for 2 seconds. A passenger side buckle switch malfunction. An occupant classification ECU malfunction.	Front seat wire RH Front seat inner belt assembly RH (passenger side buckle switch) No. 1 seat cushion assembly (occupant classification ECU)

HINT:

When DTC B1650 is stored as a result of troubleshooting for the "Airbag System", check the DTCs stored in the occupant classification ECU. When DTC B1771 is output, perform troubleshooting for it first.