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Home >> Chevrolet >> 2018 >> Trax LT, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Heated Glass/Defoggers >> Fixed And MOVEABLE Window System >> Diagnostic Information and Procedures >> DTC B316B, B317A, B318A, or B319A >> Circuit/System Verification

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 

      Refer to: Circuit/System Testing

    • Go to next step: 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 Window Main Control Down Switch = Inactive
    • Front Passenger Window Main Control Express Switch = Inactive
    • Front Passenger Window Main Control Up Switch = Inactive
    • If not the specified state 

      Test or replace the component: S79D Window Switch - Driver

    • Go to next step: If the specified state 
  4. 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

    • Go to next step: If the specified state 
  5. 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

    • Go to next step: If the specified state 
  6. 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

    • Go to next step: If the specified state 
  7. S79LR Window Switch - Left Rear - Not Pressed

    Verify the scan tool parameter: Left Rear Window Switch at Door = Inactive

    • If not the specified state 

      Test or replace the component: S79LR Window Switch - Left Rear

    • Go to next step: If the specified state 
  8. Operate the component: S79LR Window Switch - Left Rear - Pressed & Pulled

    Verify the scan tool parameter:

    • Left Rear Window Switch at Door = Up
    • Left Rear Window Switch at Door = Down
    • Left Rear Window Switch at Door = Express Down
    • If not the specified state 

      Test or replace the component: S79LR Window Switch - Left Rear

    • Go to next step: If the specified state 
  9. S79P Window Switch - Passenger - Not Pressed

    Verify the scan tool parameter: Passenger Window Switch at Door = Inactive

    • If not the specified state 

      Test or replace the component: S79P Window Switch - Passenger

    • Go to next step: If the specified state 
  10. Operate the component: S79P Window Switch - Passenger - Pressed & Pulled

    Verify the scan tool parameter:

    • Passenger Window Switch at Door = Up
    • Passenger Window Switch at Door = Down
    • Passenger Window Switch at Door = Express Down
    • If not the specified state 

      Test or replace the component: S79P Window Switch - Passenger

    • Go to next step: If the specified state 
  11. S79RR Window Switch - Right Rear - Not Pressed

    Verify the scan tool parameter: Right Rear Window Switch at Door = Inactive

    • If not the specified state 

      Test or replace the component: S79RR Window Switch - Right Rear

    • Go to next step: If the specified state 
  12. Operate the component: S79RR Window Switch - Right Rear - Pressed & Pulled

    Verify the scan tool parameter:

    • Right Rear Window Switch at Door = Up
    • Right Rear Window Switch at Door = Down
    • Right Rear Window Switch at Door = Express Down
    • If not the specified state 

      Test or replace the component: S79RR Window Switch - Right Rear

    • Go to next step: If the specified state 
  13. All OK.
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