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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat System >> Diagnostic Information and Procedures >> Lumbar Support Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the lumbar support pump turns ON when the lumbar support switch is pressed in the FORWARD direction. The lumbar support bladder should inflate until the bladder is 100% inflated or the switch is released.
    • If the pump does not turn ON or the bladder does not inflate 

      Refer to Circuit/System Testing

    • If the pump turns ON and the bladder inflates 
  3. Verify the lumbar support bladder deflates when the lumbar REARWARD switch is pressed. The bladder should deflate until it is 100% deflated or the switch is released
    • If the bladder does not deflate 

      Refer to Circuit/System Testing

    • If the bladder deflates 
  4. All OK.
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