DTC B1642/81: Lost Communication with Side Satellite Sensor Bus RH: Description

The circuit for the side collision sensor RH and rear collision sensor RH (to determine deployment of the front seat side airbag RH, curtain shield airbag RH and rear window curtain shield airbag) is composed of the center airbag sensor assembly, side airbag sensor RH (for front side), side airbag sensor RH (for rear side) and rear airbag sensor RH.

The side airbag sensor RH (for front side), side airbag sensor RH (for rear side) and rear airbag sensor RH detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1642/81 is recorded when a malfunction is detected in the circuit for the side collision sensor RH and rear collision sensor RH (to determine deployment of the front seat side airbag RH, curtain shield airbag RH and rear window curtain shield airbag).

DTC No.	DTC Detection Condition	Trouble Area
B1642/81	When one of following conditions is met: The center airbag sensor 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 circuit for the side collision sensor RH and rear collision sensor RH (to determine deployment of the front seat side airbag RH, curtain shield airbag RH and rear window curtain shield airbag) for 2 seconds. Side airbag sensor RH (for front side) malfunction Side airbag sensor RH (for rear side) malfunction Rear airbag sensor RH malfunction Center airbag sensor assembly malfunction	Floor wire Front door wire RH Side airbag sensor RH (for front side) Side airbag sensor RH (for rear side) Rear airbag sensor RH Center airbag sensor assembly