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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Diagnostic Information and Procedures >> DTC B0083 or B0084: Front Impact Sensor >> Circuit/System Verification

Circuit/System Verification

NOTE:
  • Refer to SIR Service Precautions .
  • Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
    • Impact sensor
    • Impact sensor wiring harness connector
    • Inflatable restraint sensing and diagnostic module
    • Inflatable restraint sensing and diagnostic module wiring harness connector
  • The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. Replace any CPA that is damaged or missing.
  • If the condition is intermittent or cannot be duplicated, disconnect the connectors and add dielectric grease/lubricant (Nyogel 760G or equivalent, meeting GM specification 9986087). This procedure will correct the high resistance condition due to terminal fretting corrosion.
  1. Verify that DTC B0083 or B0084 symptom byte 39 or 71 is not set as current.
    • If DTC B0083 or B0084 symptom byte 39 or 71 is set as current 

      Replace the appropriate B59 Impact Sensor.

    • If DTC B0083 or B0084 symptom byte 39 or 71 is not set as current 
  2. Verify that the inflatable restraint sensing and diagnostic module calibrations match the VIN, software part number, and calibration part number.
    • If the inflatable restraint sensing and diagnostic module calibrations do not match the VIN data 

      Program the inflatable restraint sensing and diagnostic module.

    • If the inflatable restraint sensing and diagnostic module calibrations match the VIN data 
  3. Verify the B59 Front Impact Sensors have the correct part numbers, matching the label part numbers with the parts catalog.
    • If the inflatable restraint sensing and diagnostic module part numbers do not match 

      Replace the incorrect B59 Front Impact Sensor

    • If the inflatable restraint sensing and diagnostic module part numbers do match 
  4. Verify that DTC B0083 or B0084 symptom byte 01, 02, 04, or 05 is not set as current.
    • If DTC B0083 or B0084 symptom byte 01, 02, 04, or 05 is set as current 

      Refer to Circuit/System Testing.

    • If DTC B0083 or B0084 symptom byte 01, 02, 04, 05 is not set as current 
  5. All OK.
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