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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 326 (Fixed And MOVEABLE Window System) >> Diagnostic Information and Procedures >> DTC B316B, B317A, B318A, or B319A : Window Switch (AEC, AED, AEQ) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the driver window moves while commanding the window UP and DOWN with the driver window master control
    • If the driver window does not move, refer to Circuit/System Testing.
    • If the driver window moves
  3. Verify the passenger, left rear and right rear windows move while commanding each window UP and DOWN with the switches on the driver window master control.
    • If a window does not move, refer to Circuit/System Testing.
    • If the passenger, left rear and right rear windows move
  4. 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, refer to Circuit/System Testing.
    • If the passenger window moves
  5. Verify the left rear window moves while commanding the window UP and DOWN with the S79LR Window Switch - Left Rear.
    • If the left rear window does not move, refer to Circuit/System Testing.
    • If the left rear window moves
  6. Verify the right rear window moves while commanding the window UP and DOWN with the S79RR Window Switch - Right Rear.
    • If the right rear window does not move, refer to Circuit/System Testing.
    • If the right rear window moves
  7. All OK.
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