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Home >> Cadillac >> 2018 >> CTS Base, AWD >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Repair Instructions >> Multifunction Energy Storage Capacitor Control Module Replacement (KL9) >> Removal Procedure
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Removal Procedure

  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. Rear Compartment Side Trim Replacement - Left Side - Remove
  4. GM4262463Courtesy of GENERAL MOTORS COMPANY

    {If equipped} Active Safety Control Module Bracket Bolt (1) - Remove

  5. {If equipped} Active Safety Control Module Bracket (2) - Reposition away
  6. GM4087148Courtesy of GENERAL MOTORS COMPANY

    Multifunction Energy Storage Capacitor Control Module Bracket Bolt (1) - Remove [2x]

  7. Multifunction Energy Storage Capacitor Control Module Bracket Bolt (3) - Remove [2x]
  8. Check the voltage at K176 Stop/Start Multifunction Energy Storage Capacitor Control Module terminal X3-A to Ground, verify it is less than 1 volt.
  9. If greater than 1 Volt, disconnect X3-A at C10 Stop/Start Multifunction Energy Storage Capacitor Control Module and apply electrical tape on the terminal to prevent discharge.
  10. GM4087151Courtesy of GENERAL MOTORS COMPANY

    Auxiliary Generator Battery Jumper Cable Nut (1) - Remove [3x]

  11. Auxiliary Generator Battery Jumper Cable (2) - Remove [3x]
  12. Disconnect the electrical connectors. (3)
  13. Multifunction Energy Storage Capacitor Control Module (4) - Remove
  14. GM4087156Courtesy of GENERAL MOTORS COMPANY

    Multifunction Energy Storage Capacitor Control Module Nut (1) - Remove [2x]

  15. Multifunction Energy Storage Capacitor Control Module Bracket (3) - Remove