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Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the scan tool Door Ajar Sw. parameter changes between Active and Inactive while opening and closing each vehicle door.
    • Go to next step: If the parameter changes 
  3. Verify the scan tool Interior/Courtesy Lighting Master Switch parameter changes between Door, On, and Cancel while placing the dome lamp switch in the Door, On, and Cancel positions.
    • If the parameter does not change 

      Refer to Dome Lamp Switch Malfunction.

    • Go to next step: If the parameter changes 
  4. Verify the dome lamps turn ON and OFF while commanding the Courtesy Lamps ON and OFF with a scan tool.
    • If the dome lamps do not turn ON and OFF 

      Refer to Dome Lamp Malfunction.

    • Go to next step: If the dome lamps turn ON and OFF 
  5. All OK.
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