DTC B1642: Side Satellite Sensor Bus Lost Communication (RH); DTC B1643: Side Satellite Sensor Bus Initialization Error (RH) [02/2019 - 08/2020]: Description

The side collision sensor RH circuit consists of the airbag ECU assembly, side airbag pressure sensor RH and No. 2 side airbag sensor assembly RH.

The No. 2 side airbag sensor assembly RH and side airbag pressure sensor RH detect impacts to the vehicle and send signals to the airbag ECU assembly to determine if the SRS should be deployed.

These DTCs are stored when a malfunction is detected in the circuit for the side collision sensor RH circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B1642	Side Satellite Sensor Bus Lost Communication (RH)	One of the following conditions is met: The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side satellite sensor bus RH for 2 seconds. A side airbag pressure sensor RH malfunction. A No. 2 side airbag sensor assembly RH malfunction. An airbag ECU assembly malfunction.	Floor wire Front door wire RH Side airbag pressure sensor RH No. 2 side airbag sensor assembly RH Airbag ECU assembly	Comes on	Not applicable
B1643	Side Satellite Sensor Bus Initialization Error (RH)	One of the following conditions is met: The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side satellite sensor bus RH for 2 seconds. A side airbag pressure sensor RH malfunction. A No. 2 side airbag sensor assembly RH malfunction. An airbag ECU assembly malfunction.	Floor wire Front door wire RH Side airbag pressure sensor RH No. 2 side airbag sensor assembly RH Airbag ECU assembly	Comes on	Not applicable