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Home >> Chevrolet >> 2019 >> Corvette ZR1, 2D Convertible, Automatic Trans >> Repair and Diagnosis >> Body & Frame >> Windows >> Fixed And MOVEABLE Window System >> Diagnostic Information and Procedures >> Power Windows Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On / Vehicle - In Service Mode
  2. Operate the component:Passenger Window Switch@S79D Window Switch - Driver - Pressed & Pulled

    Verify the scan tool parameter:

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

      Replace the component:S79D Window Switch - Driver

    • Go to next step: If the specified state 
  3. Verify DTC B3205 4B is not set.
    • Go to next step: If the DTC is not set 
  4. Operate the component:Driver Window Switch@S79D Window Switch - Driver - Pressed & Pulled

    Verify the component works as specified:

    • M74D Window Motor - Driver=Up
    • M74D Window Motor - Driver =Express Up
    • M74D Window Motor - Driver=Down
    • M74D Window Motor - Driver=Express Down
    • If the component does not work as specified 

      Refer to: Circuit/System Testing - Test 1

    • Go to next step: If the component works as specified 
  5. Verify DTC B3210 4B is not set.
    • Go to next step: If the DTC is not set 
  6. Operate the component:S79P Window Switch - Passenger - Pressed & Pulled

    Verify the component works as specified:

    • M74P Window Motor - Passenger =Up
    • M74P Window Motor - Passenger =Express Up
    • M74P Window Motor - Passenger =Down
    • M74P Window Motor - Passenger =Express Down
    • If the component does not work as specified 

      Refer to: Circuit/System Testing - Test 2

    • Go to next step: If the component works as specified 
  7. All OK.