DTC B1620/21: Side Airbag Sensor RH Circuit Malfunction [10/2014 - ]: Description

The side collision sensor RH circuit (to determine deployment of the front seat airbag assembly RH, rear seat airbag assembly RH, curtain shield airbag assembly RH and front seat outer belt assembly RH) is composed of the airbag ECU assembly, side airbag sensor assembly RH, side No. 2 airbag sensor assembly RH and door side airbag sensor RH.

The side airbag sensor assembly RH, side No. 2 airbag sensor assembly RH and door side airbag sensor RH detect impacts to the vehicle and send signals to the airbag ECU assembly to determine if the airbags and pretensioner should be deployed.

DTC B1620/21 is stored when a malfunction is detected in the side collision sensor RH circuit.

DTC No.	DTC Detection Condition	Trouble Area
B1620/21	The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit. Side airbag sensor assembly RH malfunction Side No. 2 airbag sensor assembly RH malfunction Airbag ECU assembly malfunction	No. 2 floor wire Side airbag sensor assembly RH Side No. 2 airbag sensor assembly RH Airbag ECU assembly