DTC B1790: Center Airbag Sensor Assembly Communication Circuit Malfunction: Description

WARNING: This page is about a different car, the 2010 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

The center airbag sensor communication circuit consists of the occupant classification ECU and center airbag sensor.

DTC B1790 is stored when a malfunction is detected in the center airbag sensor communication circuit.

DTC Code	DTC Detection Condition	Trouble Area
B1790	One of the following conditions is met: Occupant classification ECU detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to +B signal in the center airbag sensor communication circuit for 2 seconds. Center airbag sensor malfunction. Occupant classification ECU malfunction.	Floor wire Front seat wire RH Occupant classification ECU Center airbag sensor

HINT:

When DTC B1630/32 is stored as a result of troubleshooting the airbag system, perform troubleshooting for DTC B1790 of the occupant classification system.
Use the Techstream to check for DTCs of the occupant classification ECU, otherwise the DTCs cannot be read.