B0090 CHEVROLET – Rollover Sensor Erratic

B0090 CHEVROLET Possible Symptoms

Air Bag Warning Light ON

B0090 CHEVROLET Possible Causes

Faulty Rollover Sensor,Rollover Sensor harness is open or shorted,Rollover Sensor circuit poor electrical connection,Faulty Inflatable Restraint Sensing and Diagnostic Module (SDM)

B0090 CHEVROLET Description

The Inflatable Restraint Vehicle Rollover Sensor (ROS) utilizes battery power supply and a bidirectional interface circuit. The ROS modulates current on the interface to send ID, State of Health, and deployment commands to the Inflatable Restraint Sensing and Diagnostic Module (SDM). When the ignition is turned on the ROS responds by performing internal diagnostics and sending an ID to the SDM. The ROS continually communicates status messages to the SDM, which determines if a fault is present in the ROS circuit. If the fault is present, the SDM will set a Diagnostic Trouble Code (DTC).