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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Supplemental Restraints System) >> Diagnostic Information and Procedures >> DTC B10B4 or B120C >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

The condition may be intermittent and require driving the vehicle, then reviewing the snapshot to verify resistance parameters do not drop out or spike. Refer to Testing for Intermittent Conditions and Poor Connections

  1. Ignition ON.
  2. Verify that DTC B10B4 or B120C symptom byte 81 is not set as current.
    • If DTC B10B4 or B120C symptom byte 81 is set as current 

      Replace the appropriate B58 Front Impact Sensor.

    • Go to next step: If DTC B10B4 or B120C symptom byte 81 is not set as current 
  3. Verify that DTC B10B4 or B120C symptom byte 11 or 15 is not set as current.
    • If DTC B10B4 or B120C symptom byte 11 or 15 is set as current 

      Refer to Circuit/System Testing.

    • Go to next step: If DTC B10B4 or B120C symptom byte 11 or 15 is not set as current 
  4. A fault is not currently present and may be an intermittent condition.
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