When Monitored:With the CAN ignition status as IGN_RUN, the module tries to detect potentially damaging events and monitors the CAN Bus for the Impact messages (crash event causing one or more airbag or pretensioner to deploy) or upon detecting an Offset Event (if equipped).Set Condition:This DTC will set if the module detects a potentially damaging event or the Impact messages from the CAN Bus input.Possible CausesB1BA7-OCS VERIFICATION REQUIRED DTC ACTIVE 1. CHECK FOR OCCUPANT CLASSIFICATION MODULE (OCM) ACTIVE DTC:ACTIVE INTERNAL FAULTSIGNITION FAULTSBATTERY FAULTSEAT WEIGHT SENSOR DTCEnsure the battery is fully charged.Turn the ignition on.With the scan tool, read Occupant Classification Module (OCM) DTC.Does the scan tool display any active DTC listed above?YesDiagnose and repair the DTC. Refer to the Table of Contents in this Section for a complete list of symptoms.NoGo To 22. VERIFY THAT DTC B1BA7-OCCUPANT CLASSIFICATION SYSTEM VERIFICATION REQUIRED IS ACTIVEWith the scan tool, read OCM DTC.Does the scan tool display active: B1BA7-OCCUPANT CLASSIFICATION SYSTEM VERIFICATION REQUIRED?YesGo To 3NoGo To 53. PERFORM OCCUPANT CLASSIFICATION MODULE SYSTEM VERIFICATION TESTVerify that the passenger seat is empty.Failure to follow the test instructions or aborting the test will cause faults to set when performing the Occupant Classification Module System Verification Test. To prevent faults due to process errors: verify that all tests steps that led you here were performed as directed; verify that the ignition is in run; Wait 30 seconds after changing the seat weight before proceeding to allow the system to stabilize; only press scan tool buttons when directed to do so; and perform the Occupant Classification Module System Verification Test to completion.With the scan tool in OCM, select More Options, select System Tests, and select Occupant Classification Module System Verification Test. Run the test by following the instructions displayed on the scan tool. When the test is complete, proceed as follows.With the scan tool, read OCM DTC.Does the scan tool display active: B1BA7-OCCUPANT CLASSIFICATION SYSTEM VERIFICATION REQUIRED?YesGo To 4No - But Other DTC PresentDiagnose and repair the DTC. Refer to the Table of Contents in this Section for a complete list of symptoms.No - No Active DTC PresentPerform *OCM SYSTEM VERIFICATION TEST.4. PERFORM SENSOR TORQUE TESTTo avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.Verify that the passenger seat is empty.Verify that all of the Seat Weight Sensor mounting screws are tightened to torque specification. Refer to Group 23 for specification.To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.Failure to follow the test instructions or aborting the test will cause faults to set when performing the Occupant Classification Module System Verification Test. To prevent faults due to process errors: verify that all tests steps that led you here were performed as directed; verify that the ignition is in run; Wait 30 seconds after changing the seat weight before proceeding to allow the system to stabilize; only press scan tool buttons when directed to do so; and perform the Occupant Classification Module System Verification Test to completion.With the scan tool in OCM, select More Options, select System Tests, and select Occupant Classification Module System Verification Test. Run the test by following the instructions displayed on the scan tool. When the test is complete, proceed as follows.With the scan tool, read OCM DTC.Does the scan tool display active: B1BA7-OCCUPANT CLASSIFICATION SYSTEM VERIFICATION REQUIRED?YesPerform the *Diagnosis/Checkout Procedure For Seat Weight Sensors.Perform *OCM SYSTEM VERIFICATION TEST .No - But Other DTC PresentDiagnose and repair the DTC. Refer to the Table of Contents in this Section for a complete list of symptoms.No - Active DTC PresentPerform *OCM SYSTEM VERIFICATION TEST.5. CHECK FOR ACTIVE DTC B1BA8-OCM SYSTEM OUT OF CALIBRATION/NOT CALIBRATEDWith the scan tool, read OCM DTC.Does the scan tool display active: B1BA8-OCM SYSTEM OUT OF CALIBRATION/NOT CALIBRATED?YesDiagnose and repair the DTC. Refer to the Table of Contents in this Section for a complete list of symptoms.NoPerform *OCM SYSTEM VERIFICATION TEST.