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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 855 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0090 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
  1. For DTC B0090 39 replace the vehicle rollover sensor.
  2. For DTC B0090 0F, B0090 3A and B0090 71 request DTC from ROS and repair any ROS DTC prior to continuing this diagnostic procedure.
  3. With Ignition OFF, disconnect the vehicle rollover sensor connector. Refer to inflatable restraint vehicle rollover sensor replacement  in repair instructions for connector location.
  4. Remove the SDM connector.
  5. Test the vehicle rollover sensor serial data circuit for an open or high resistance between the vehicle rollover sensor and SDM connector. Verify no open or high resistance exists.
    • If any of the above conditions are found make the appropriate repair.
  6. Test the vehicle rollover sensor ignition 1 voltage circuit for a short to ground, a high resistance, or an open. Verify no short to ground, a high resistance, or an open exists.
    • If any of the above conditions are found make the appropriate repair.
  7. Replace the inflatable restraint vehicle rollover sensor. Perform the Inflatable Restraint Vehicle Rollover Sensor Programming and Setup procedure.
  8. Ignition ON, use the scan tool to clear the DTCs, then recheck for DTC B0090. Verify that the DTC does not reset.
    • If DTC B0090 was current replace the SDM.
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