Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

Ignition - On / Vehicle - In Service Mode
Perform the scan tool control function: Driver Window Motor - Up & Down
Verify the component works as specified: M74D Window Motor - Driver = Up & Down
- If not the specified state
  Refer to:Power Windows Malfunction
- Go to next step: If the specified state
Perform the scan tool control function: Passenger Window Motor - Up & Down
Verify the component works as specified: M74P Window Motor - Passenger = Up & Down
- If not the specified state
  Refer to:Power Windows Malfunction
- Go to next step: If the specified state
Perform the scan tool control function: Left Rear Window Motor - Up & Down
Verify the component works as specified: M74LR Window Motor - Left Rear = Up & Down
- If not the specified state
  Refer to:Power Windows Malfunction
- Go to next step: If the specified state
Perform the scan tool control function: Right Rear Window Motor - Up & Down
Verify the component works as specified: M74RR Window Motor - Right Rear = Up & Down
- If not the specified state
  Refer to:Power Windows Malfunction
- Go to next step: If the specified state
Operate the component: S134 Folding Top/Global Window Switch - Pressed & Pulled
Verify the component works as specified:
- M74D Window Motor - Driver = Express Up & Express Down
- M74P Window Motor - Passenger = Express Up & Express Down
- M74LR Window Motor - Left Rear = Express Up & Express Down
- M74RR Window Motor - Right Rear = Express Up & Express Down
- If not the specified state
  Refer to: Circuit/System Testing
- Go to next step: If the specified state
All OK.