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Home >> Cadillac >> 2018 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Electrical >> Charging Systems >> Battery, Charging System And Starting System (Hybrid) >> Diagnostic Information and Procedures >> DTC U3000 (K186 Multifunction Energy Storage Capacitor Control Module) >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON/Vehicle in Service Mode.
  2. Verify DTC U3000 is not set.
    • If DTC U3000 is set with symptom byte 43, 47, or 4B 
    1. Program the K186 Multifunction Energy Storage Capacitor Control Module.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the K186 Multifunction Energy Storage Capacitor Control Module.
      • Go to next step: If the DTC does not set
    3. All OK.
    • If DTC U3000 is set with symptom byte 07, 0B, or 54 
    1. Using the scan tool select Control Module Self Test under Configuration/Reset Functions from Multifunction Energy Storage Capacitor Control Module menu
    2. Verify the DTC does not set
      • If the DTC sets, replace the K186 Multifunction Energy Storage Capacitor Control Module.
      • Go to next step: If the DTC does not set
    3. All OK.
    • If DTC U3000 is set with any symptom byte, except 07, 0B, 43, 47, 4B, or 54 

      Replace the K186 Multifunction Energy Storage Capacitor Control Module.

    • Go to next step: If DTC U3000 is not set 
  3. All OK
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