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Home >> Buick >> 2016 >> Encore Base, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Fixed And MOVEABLE Window System >> Diagnostic Information and Procedures >> Power Windows Malfunction (AXG, A66, A33) >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the M74D Window Motor-Driver functions while commanding the Driver Window Motor Up and Down with a scan tool.
    • If the M74D Window Motor-Driver does not move UP and DOWN as commanded 

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

    • If the M74D Window Motor-Driver moves UP and DOWN as commanded 
  3. Verify the driver window moves while commanding the window UP, express UP, DOWN and express DOWN with the S79D Window Switch-Driver.
    • If the driver window does not move UP or DOWN as commanded 

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

    • If after normalization, the driver window does not express UP or express DOWN 

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

    • If the driver window moves UP, express UP, DOWN and express DOWN as commanded 
  4. Verify the passenger, left rear and right rear windows perform the UP and DOWN functions while using the appropriate switch on the S79D Window Switch-Driver.
    • If a window does not perform the UP or DOWN functions 

      Refer to Circuit/System Testing - Passenger or Rear Window Motor Inoperative.

    • If the passenger, left rear and right rear windows perform the UP and DOWN with the S79D Window Switch-Driver 
  5. Verify the passenger window performs the UP and DOWN functions while using the S79P Window Switch-Passenger
    • If the passenger window does not perform the UP or DOWN functions with the S79P Window Switch-Passenger 

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

    • If the passenger window performs the UP and DOWN functions. 
  6. Verify the left rear and right rear window performs the UP and DOWN functions while using the appropriate S79 Window Switch-Rear
    • If the left rear or right rear window does not perform the UP or DOWN functions with the S79 Window Switch-Rear 

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

    • If the left rear or right rear window performs the UP and DOWN functions. 
  7. All OK.
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