DTC B1678: Lost Communication with Rear Floor Airbag Sensor LH; DTC B1679: Rear Floor Airbag Sensor LH Initialization Incomplete: Description

The No. 2 airbag sensor assembly circuit consists of the airbag ECU assembly and No. 2 airbag sensor assembly.
The No. 2 airbag sensor assembly detects impacts to the vehicle and sends signals to the airbag ECU assembly to determine if the airbag should be deployed.
These DTCs are stored when a malfunction is detected in the No. 2 airbag sensor assembly circuit.

DTC Code	DTC Detection Condition	Trouble Area
B1678 B1679	The airbag ECU assembly 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 No. 2 airbag sensor assembly circuit. No. 2 airbag sensor assembly malfunction. Airbag ECU assembly malfunction.	Floor wire No. 2 airbag sensor assembly Airbag ECU assembly