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Home >> Cadillac >> 2017 >> CTS Base, AWD >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Repair Instructions >> Multifunction Energy Storage Capacitor Replacement (KL9) >> Removal Procedure

Removal Procedure

    WARNING:

    Ultracapacitors should not be opened, disassembled, crushed, burned, charged over 5V, or exposed to high temperatures greater than 81.6°C (179°F). Ultracapacitors contain acetonitrile. If ultracapacitor leaks or ruptures it will emit flammable liquid and vapor with an aromatic ether-like odor. Harmful if inhaled or absorbed through the skin. Causes respiratory tract, eye, and skin irritation. May be harmful if swallowed. Can cause target organ damage. Arcing may also occur when charged and shorted, resulting in molten metal splattering and arc-flash hazards. To reduce the risk of personal injury and/or vehicle damage:

    • Do not breath vapor or mist, assure adequate ventilation of area.
    • Do not ingest.
    • Do not eat, drink or smoke when using this product.
    • Avoid contact with eyes, skin and clothing. In case of exposure to ultracapacitor contents, wash affected area for at least 15 minutes with generous amounts of water and seek medical attention.
    • Keep away from heat sparks and flame.
    • Remove jewelry before handling.
    • Follow diagnostic and repair procedures to discharge the ultracapacitor and disconnect the negative battery terminal when requested.
  1. Command the Discharge Start/Stop Capacitor parameter with the scan tool and discharge the multifunction energy storage capacitor. Wait 3 minutes for the capacitor to discharge.
  2. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection (with KL9) 
  3. Raise and support the vehicle. Lifting and Jacking the Vehicle (CTS)Lifting and Jacking the Vehicle (CTS-V)
  4. Remove Rear Bumper Fascia ReplacementRear Bumper Fascia Replacement (CTS-V)
  5. Fig 1: Ground Cable Nut
    GM4088505Courtesy of GENERAL MOTORS COMPANY
  6. Remove Ground Cable Nut (4)
  7. Remove Ground Cable (5)
  8. Remove Protective Cap (1)
  9. Remove Auxiliary Generator Battery Jumper Cable Fastener (2)
  10. Fig 2: Multifunction Energy Storage Capacitor
    GM4088508Courtesy of GENERAL MOTORS COMPANY
  11. Remove Multifunction Energy Storage Capacitor Fastener (1) (Qty: 2)
  12. Disconnect Electrical Connector (2)
  13. Remove Multifunction Energy Storage Capacitor (3)
  14. Lower the vehicle.