DTC B1794 Open in Occupant Classification ECU Battery Positive Line: Description

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

This circuit consists of the occupant classification ECU and the power source circuit (battery, fuse, wire harness).

DTC B1794 is set when a malfunction is detected in the occupant classification ECU battery positive line.

HINT:

When DTC B1794 is output after switching the ignition switch LOCK-ON-LOCK 50 times in a row when a malfunction occurs in the power circuit for the occupant classification system, the DTC is output again when a malfunction is detected even once after being cleared, unless the normal system code is input.

DTC TROUBLE DETECTION CONDITION

DTC No.	DTC Detection Condition	Trouble Area
B1794	When one of following conditions is met: The occupant classification ECU receives the ignition switch OFF to ON signal 50 times in a row when a malfunction occurs in the power circuit for the occupant classification ECU (OFF to ON to OFF should be counted as 1 time). Occupant classification ECU malfunction	Battery ECU-B fuse Wire harness Occupant classification ECU