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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> Body & Frame >> Fixed And MOVEABLE Windows >> Diagnostic Information and Procedures >> DTC B316B: Driver Window Switch >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition» On / Vehicle» In Service Mode
  2. S79D Window Switch - Driver» Driver Left Front Window Switch-Not Pressed

    Verify the scan tool parameter:

    • Driver Window Main Control Down Switch=Inactive
    • Driver Window Main Control Up Switch=Inactive
    • Driver Window Main Control Express Switch=Inactive
    • If not the specified state 
    • If the specified state 
  3. S79D Window Switch - Driver» No Button Pressed

    Verify the scan tool parameter:

    • Left Rear Window Main Control Down Switch = Inactive
    • Left Rear Window Main Control Express Switch = Inactive
    • Left Rear Window Main Control Up Switch = Inactive
    • Right Rear Window Main Control Down Switch = Inactive
    • Right Rear Window Main Control Express Switch = Inactive
    • Right Rear Window Main Control Up Switch = Inactive
    • Front Passenger Main Control Down Switch = Inactive
    • Front Passenger Main Control Express Switch = Inactive
    • Front Passenger Main Control Up Switch = Inactive
    • If not the specified state 

      Test or replace the component: S79D Window Switch - Driver

    • If the specified state 
  4. Operate the component: S79D Window Switch - Driver» Driver Left Front Window Switch-Pressed & Pulled

    Verify the scan tool parameter:

    • Driver Window Main Control Down Switch = Active
    • Driver Window Main Control Up Switch = Active
    • Driver Window Main Control Express Switch = Active
    • If not the specified state 

      Refer to Circuit/System Testing

    • If the specified state 
  5. Operate the component: S79D Window Switch - Driver» Left Rear Window Switch-Pressed & Pulled

    Verify the scan tool parameter:

    • Left Rear Window Main Control Down Switch=Active
    • Left Rear Window Main Control Express Switch=Active
    • Left Rear Window Main Control Up Switch=Active
    • If not the specified state 

      Test or replace the component: S79D Window Switch - Driver

    • If the specified state 
  6. Operate the component: S79D Window Switch - Driver» Right Rear Window Switch-Pressed & Pulled

    Verify the scan tool parameter:

    • Right Rear Window Main Control Down Switch=Active
    • Right Rear Window Main Control Express Switch=Active
    • Right Rear Window Main Control Up Switch=Active
    • If not the specified state 

      Test or replace the component: S79D Window Switch - Driver

    • If the specified state 
  7. Operate the component: S79D Window Switch - Driver» Right Front Window Switch-Pressed & Pulled

    Verify the scan tool parameter:

    • Front Passenger Window Main Control Down Switch=Active
    • Front Passenger Window Main Control Express Switch=Active
    • Front Passenger Window Main Control Up Switch=Active
    • If not the specified state 

      Test or replace the component: S79D Window Switch - Driver

    • If the specified state 
  8. All OK.