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Home >> Buick >> 2012 >> Regal Turbo, Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Heated Glass/Defoggers >> Fixed And MOVEABLE Windows >> Diagnostic Information and Procedures >> DTC B316B, B317A, B318A, or B319A >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, verify that each of the scan tool parameters listed below are Inactive:
    • Front Passenger Main Control Down Switch
    • Front Passenger Main Control Express Switch
    • Front Passenger Main Control Up Switch
    • Left Rear Window Main Control Down Switch
    • Left Rear Window Main Control Express Switch
    • Left Rear Window Main Control Up Switch
    • Right Rear Window Main Control Down Switch
    • Right Rear Window Main Control Express Switch
    • Right Rear Window Main Control Up Switch
    • If any of the parameters are always Active, replace the S79D window switch-driver.
  2. Verify that the scan tool Left Rear Window Switch at Door parameter is Inactive.
    • If not the specified value, replace the S79LR window switch-left rear.
  3. Verify that the scan tool Right Rear Window Switch at Door parameter is Inactive.
    • If not the specified value, replace the S79RR window switch-right rear.
  4. Command the driver window to go UP, DOWN, express UP and express DOWN by using the S79D window switch-driver. The driver window should perform the UP, DOWN, express UP and express DOWN functions.
    • If the driver window does not perform as specified, refer to Driver Window Switch Malfunction in Circuit/System Testing .
  5. Command the passenger window to go UP, DOWN, express UP and express DOWN by using the S79P window switch-passenger. The passenger window should perform the UP, DOWN, express UP and express DOWN function.
    • If the passenger window does not perform as specified, refer to Passenger Window Malfunction Circuit/System Testing .
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