DTC B1790 Center Airbag Sensor Assembly Communication Circuit Malfunction: Description

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

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

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

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No.	DTC Detecting Condition	Trouble Area
B1790	The occupant classification ECU receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the center airbag sensor assembly communication circuit for 2 seconds. Center airbag sensor assembly malfunction Occupant classification ECU malfunction	Occupant classification ECU Center airbag sensor assembly Floor wire Front seat wire RH