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

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

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

DTC TROUBLE DETECTION CONDITION TABLE

DTC Code	DTC Detection Condition	Trouble Area
B1794	One of following conditions is met: Occupant classification ECU circuit malfunction Occupant classification ECU malfunction Occupant classification ECU receives short circuit to ground signal in passenger side buckle switch circuit for 2 seconds	Harness or connector Occupant classification ECU

HINT:

When DTC B1650/32 is detected as a result of troubleshooting the airbag system, perform troubleshooting for DTC B1794 of the occupant classification system.
Use the Techstream to check for DTCs of the occupant classification ECU, otherwise the DTCs cannot be read.