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Home › Hummer › 2008 › H2 4D Utility Pickup › Repair and Diagnosis › Body & Frame › Fixed And MOVEABLE Windows › Diagnostic Information and Procedures › Power Windows Malfunction › Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, observe the operation of the power windows while commanding each window UP and DOWN by using their respective window switches, each window should perform the UP and DOWN function.
    • If the driver window is inoperative, refer to Circuit/System Testing  for Driver Window Malfunction.
    • If the front passenger window is inoperative, refer to Circuit/System Testing  for Passenger Window Malfunction.
    • If either rear passenger power window is inoperative, refer to Circuit/System Testing  for Rear Passenger Window Malfunction.
  2. Observe the scan tool Driver Window RF Switch, Driver Window LR Switch and Driver Window RR Switch parameters while using the driver master control switches. The reading should change between OFF/UP/DOWN/EXPRESS DOWN.
    • If the parameter does not change, replace the DDS.
  3. Observe the scan tool Window Lockout Switch parameter while pressing and depressing the window lockout switch on the driver master control. The reading should change between ON and OFF.
    • If the parameter does not change, replace the DDS.
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