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DTC B1790: Center Airbag Sensor Assembly Communication Circuit Malfunction [08/2019 - ]: Description

The center airbag sensor communication circuit consists of the occupant classification ECU and the center airbag sensor.

DTC B1790 is stored when a malfunction is detected in the center airbag sensor communication circuit.

DTC Code	DTC Detection Condition	Trouble Area
B1790	One of following conditions is met: Occupant classification ECU receives line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to +B signal in center airbag sensor communication circuit for 2 seconds Center airbag sensor malfunction Occupant classification ECU malfunction	No. 2 floor wire Front seat wire RH (for Power seat) Occupant classification ECU Center airbag sensor

HINT:

When DTC B1650 is detected as a result of troubleshooting the airbag system, perform troubleshooting for DTC B1790 of the occupant classification system.
Use the Techstream to check for DTCs of the occupant classification ECU, otherwise the DTCs cannot be read.