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Component Testing

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.

Lumbar Support Switch

  1. Ignition OFF, disconnect the harness connector at the appropriate S65 Seat Lumbar Support Switch.
  2. Test for infinite resistance between the B+ terminal G and each signal terminal with the switch in the open position.
    • If less than infinite resistance 

      Replace the S65 Seat Lumbar Support Switch.

    • Go to next step: If infinite resistance 
  3. Test for less than 2 Ω between the B+ terminal G and each signal terminal with the appropriate switch in the closed position.
    • If 2 Ω or greater 

      Replace the S65 Seat Lumbar Support Switch.

    • Go to next step: If less than 2 Ω 
  4. All OK.
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