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Home › Chevrolet › 2016 › Suburban 3500 HD LS › Repair and Diagnosis › Body & Frame › Windows › Fixed And MOVEABLE Window System › Diagnostic Information and Procedures › Power Windows Malfunction › Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the driver window functions while commanding the Driver Window Motor Up and Down with a scan tool.
    • If the window does not move UP and DOWN as commanded 

      Refer to Circuit/System Testing - Driver/Passenger Window Motor Malfunction.

    • If the window moves UP and DOWN as commanded 
  3. Verify the driver window moves while commanding the window UP and DOWN with the S79D Window Switch-Driver.
    • If the window does not move UP and DOWN as commanded 

      Refer to Circuit/System Testing - Driver Window Switch Malfunction.

    • If the window moves UP and DOWN as commanded 
  4. Verify the driver window performs the express UP and express DOWN functions with the S79D Window Switch-Driver.
    1. Verify the driver window performs the express UP and express DOWN functions with the S79D Window Switch-Driver
    • If the driver window does not express UP or express DOWN 

      Refer to Circuit/System Testing - Driver Window Switch Malfunction.

    • If the driver window performs the express UP and express DOWN functions 
  5. Verify the scan tool parameters listed below change when pressing and pulling the switches for the passenger, left rear and right rear window on the S79D Window Switch-Driver
    • Left Rear Main Control Down Switch - Inactive and Active
    • Left Rear Main Control Express Switch - Inactive and Active
    • Left Rear Main Control Up Switch - Inactive and Active
    • Right Rear Main Control Down Switch - Inactive and Active
    • Right Rear Main Control Express Switch - Inactive and Active
    • Right Rear Main Control Up Switch - Inactive and Active
    • Front Passenger Main Control Down Switch - Inactive and Active
    • Front Passenger Main Control Express Switch - Inactive and Active
    • Front Passenger Main Control Up Switch - Inactive and Active
    • If the parameters do not change 

      Refer to Circuit/System Testing - Driver Window Switch Malfunction.

    • If the parameters changes 
  6. Verify the passenger window moves while commanding the Passenger Window Motor Up and Down with a scan tool.
    • If the passenger window does not move UP and DOWN as commanded 

      Refer to Circuit/System Testing - Driver/Passenger Window Motor Malfunction.

    • If the window moves UP and DOWN as commanded 
  7. Verify the passenger window moves while commanding the window UP and DOWN with the S79P Window Switch-Passenger.
    • If the passenger window does not move UP and DOWN as commanded 

      Refer to Circuit/System Testing - Passenger Window Switch Malfunction.

    • If the window moves UP and DOWN as commanded 
  8. Verify the passenger window performs the express UP and express DOWN functions with the S79P Window Switch-Passenger.
    1. Verify the passenger window performs the express UP and express DOWN functions with the S79P Window Switch-Passenger
    • If the passenger window does not express UP or express DOWN 

      Refer to Circuit/System Testing - Passenger Window Switch Malfunction.

    • If the passenger window performs the express UP and express DOWN functions 
  9. Verify the left rear and right rear window move while commanding the Left Rear Window Motor and Right Rear Window Motor Up and Down with a scan tool.
    • If a rear window does not move UP and DOWN as commanded 

      Refer to Circuit/System Testing - Rear Power Window Inoperative.

    • If the rear window moves UP and DOWN as commanded 
  10. All OK.
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