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Home >> Chevrolet >> 2021 >> Camaro LS, Standard Trans >> Repair and Diagnosis >> Body & Frame >> Fixed And MOVEABLE Windows >> Diagnostic Information and Procedures >> Power Windows Malfunction (Convertible) >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On/Vehicle - In Service Mode
  2. Perform the scan tool control function: Left Rear Window Motor - Up & Down

    Verify the component operates in both directions: M74LR Window Motor - Left Rear

    • If the component does not work as specified 

      Replace the component: M74LR Window Motor - Left Rear

    • Go to next step: If the component works as specified 
  3. Perform the scan tool control function: Right Rear Window Motor - Up & Down

    Verify the component operates in both directions: M74RR Window Motor - Right Rear

    • If the component does not work as specified 

      Replace the component: M74RR Window Motor - Right Rear

    • Go to next step: If the component works as specified 
  4. Switch - Rear Window @ S79D Window Switch - Driver = Activated
  5. Operate the component: Driver Window Switch & Passenger Window Switch @ S79D Window Switch - Driver - Pressed & Pulled

    Verify the scan tool parameter:

    • Left Rear Window Main Control Down Switch = Inactive & Active
    • Left Rear Window Main Control Express Switch = Inactive & Active
    • Left Rear Window Main Control Up Switch = Inactive & Active
    • Right Rear Window Main Control Down Switch = Inactive & Active
    • Right Rear Window Main Control Express Switch = Inactive & Active
    • Right Rear Window Main Control Up Switch = Inactive & Active
    • 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 
  6. Verify DTC B3205 4B is not set.
    • Go to next step: If the DTC is not set 
  7. Switch - Rear Window @ S79D Window Switch - Driver = Not Activated
  8. 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 not the specified state 

      Refer to: Circuit/System Testing - Test 1

    • Go to next step: If the specified state 
  9. Verify DTC B3210 4B is not set.
    • Go to next step: If the DTC is not set 
  10. 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 not the specified state 

      Refer to: Circuit/System Testing - Test 2

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