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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Wiring Systems And Power Management - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B1AC3 >> 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.
  1. Cycle the ignition between Run Mode and Off.
  2. Verify the Green Run/Propulsion indicator turns on and off.
    • If the indicator does not turn on and off 
  3. Ignition On Vehicle in Run mode
  4. Verify the scan tool Power Mode value Is Run
    • Go to next step: If the value is Run 
  5. Refer to: Circuit/System Testing
    • Go to next step: If the indicator turns on and off 
  6. Verify DTC B1AC2 is not current
    • DTC B1AC3 is current 

      Refer to: Circuit/System Testing

    • Go to next step: DTC B1AC3 is not current 
  7. A fault is not currently present and may be an intermittent condition.
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