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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Seats >> Seat Heating And Cooling >> Diagnostic Information and Procedures >> Heated Seat Inoperative - Rear >> Circuit/System Verification

Circuit/System Verification

  1. Engine running, use a scan tool to observe the appropriate Heated Seat Switch parameter. Verify that the heated seat switch parameter changes from Active to Inactive when the switch is pressed and released.
    • If the parameter does not display the correct switch status replace the rear HVAC/RSA module.
  2. Display the Rear Heated Seat Module Data list and verify that the heated temperature level changes from Off, to High, to Low as the heated seat switch is cycled through these states.
    • If the heated seat mode parameter does not change states replace the rear heated seat module.
  3. Verify that the rear heated seat modes are being displayed correctly by the rear HVAC/RSA module.
    • If the rear heated seat mode are not displayed correctly, replace the rear HVAC/RSA module.
  4. If all the tests are normal replace the rear heated seat module.
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