DTC B1633-81: Rear Airbag Sensor Assembly RH Initialization Incomplete; DTC B1638-82: Rear Airbag Sensor Assembly LH Initialization Incomplete [12/2012 - ]: Description

The circuit for the side collision sensor LH or RH (to determine deployment of the curtain shield airbag assembly LH or RH) is composed of the airbag sensor assembly, door side airbag sensor LH or RH and rear airbag sensor LH or RH.

The rear airbag sensor LH or RH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbag should be deployed.

DTC B1633/81 or B1638/82 is stored when a malfunction is detected in the circuit for the rear side collision sensor LH or RH (to determine deployment of the curtain shield airbag assembly LH or RH).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B1633/81	Rear Airbag Sensor Assembly RH Initialization Incomplete	One of the following conditions is met: The airbag sensor 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 rear side collision sensor RH (to determine deployment of the curtain shield airbag assembly RH) for 2 seconds. A rear airbag sensor RH malfunction. An airbag sensor assembly malfunction.	Floor wire Rear airbag sensor RH Airbag sensor assembly
B1638/82	Rear Airbag Sensor Assembly LH Initialization Incomplete	One of the following conditions is met: The airbag sensor 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 rear side collision sensor LH (to determine deployment of the curtain shield airbag assembly LH) for 2 seconds. A rear airbag sensor LH malfunction. An airbag sensor assembly malfunction.	No. 2 floor wire Rear airbag sensor LH Airbag sensor assembly