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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 B1491 >> 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. Refer to Testing for Intermittent Conditions and Poor Connections

  1. Ignition ON / Vehicle In Service Mode.
  2. Verify that DTC B1491 is not set as current.
    • If DTC B1491 is set as current 

      Refer to Circuit/System Testing.

    • Go to next step: If DTC B1491 is not set as current 
  3. A fault is not currently present and may be an intermittent condition.
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