Diagnostic Aids

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

The Inflatable Restraint Sensing and Diagnostic Module scan tool deployment loop, impact sensor, and passenger presence (if equipped) data will match what the Inflatable Restraint Sensing and Diagnostic Module has been programmed to expect to see on the vehicle. B1019 DTC will set if a deployment loop or impact sensor is added or removed from the system, or if the passenger presence is not detected.

DTC B1019 will set when an open/high resistance DTC sets for a deployment loop or impact sensor. This causes mismatch between the learned and actual components connected to the Inflatable Restraint Sensing and Diagnostic Module.

DTC B1019 can set with no other DTCs if an unused deployment loop or impact sensor circuit is shorted to ground. This causes a mismatch between the learned and actual components connected to the Inflatable Restraint Sensing and Diagnostic Module.

DTC B1019 can set with no other DTCs if a deployment loop, seat belt, or impact sensor circuit is connected to the Inflatable Restraint Sensing and Diagnostic Module and the software calibration does not have that input/output as valid. This causes a mismatch between the scan tool Enable/Disable status and Learned/Not Learned status. The inverse of this, when the calibration has loops or components as equipped but they are not physically connected to the module, can also cause DTC B1019 to set with no other DTCs. The scan tool Enable/Disable status and Learned/Not Learned status information can be found in the "Deployment Loop Configuration Data" and "Sensor Configuration Data" in the scan tool.