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Home >> Cadillac >> 2019 >> CT6 V >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Starter >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC B101D (Multifunction Energy Storage Capacitor Control Module) >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC B101D is not set.
    • If DTC B101D 39 is set 
    1. Using the scan tool, select Control Module Self Test in Configuration/Reset Functions from the Multifunction Energy Storage Capacitor Control Module menu.
    2. Verify the Control Module Status transitions to Unlocked and the DTC does not set.
      • If the Control Module Status does not unlock or the DTC sets, replace the K186 Multifunction Energy Storage Capacitor Control Module.
      • Go to next step: If the Control Module Status unlocks and the DTC does not set
    3. All OK.
    • If DTC B101D is set, except B101D 39 

      Replace the K186 Multifunction Energy Storage Capacitor Control Module.

    • Go to next step: If DTC B101D is not set 
  3. All OK
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