1. Safety First:
* Disconnect the negative battery terminal before starting any work on the electrical system. This prevents accidental shorts and injury.
2. Check the Fuse:
* Consult your owner's manual to locate the fuse for the power windows. It's usually in the under-hood fuse box or the interior fuse panel (often located under the dashboard).
* Inspect the fuse visually. Look for a blown fuse (broken filament). Replace it with a fuse of the same amperage rating if it's blown. If the fuse blows again immediately after replacement, there's a short circuit somewhere in the system. Don't keep replacing the fuse; find the short!
3. Check the Window Switch:
* Test the switch: Try the switch in all positions (up, down). If it doesn't work, it could be faulty. You can try swapping it with the driver's side switch (temporarily, for testing purposes only) to see if the problem follows the switch. If the problem moves with the switch, you've identified the faulty part.
* Inspect the switch: Look for any obvious damage, loose connections, or broken wires within the switch itself. This is often more difficult and might require partial disassembly.
4. Check the Window Motor:
* Listen carefully: With the switch activated, listen near the door for any clicking or buzzing sounds. This might indicate a faulty motor, or a problem with the motor's gears.
* Visual inspection (if accessible): Removing the door panel (see step 5) allows you to access the motor. Inspect the motor for any visible damage or binding. Testing the motor directly requires some electrical knowledge and the correct tools.
5. Check the Window Regulator:
* Access the regulator: This is usually the most challenging part. You'll need to remove the interior door panel. There are many online tutorials showing how to remove the door panel for a 1997 Ford Taurus; search for "1997 Ford Taurus front passenger door panel removal." Be careful not to damage any clips or connectors.
* Inspect the regulator: Once the panel is off, you can see the window regulator mechanism. Look for broken cables, bent or broken parts, or anything that prevents smooth movement. The regulator is often the culprit for a window that won't move. Replacement is usually the solution.
6. Check Wiring and Connections:
* Inspect wires: While the door panel is off, carefully inspect all the wiring connecting the switch, motor, and regulator. Look for broken, frayed, or corroded wires. Repair or replace any damaged wiring.
* Check connectors: Make sure all the connectors are securely plugged in.
7. Seek Professional Help:
If you're uncomfortable performing these repairs yourself, it's best to take your vehicle to a qualified mechanic. Diagnosing electrical problems can be complex, and incorrectly repairing them can lead to further damage.
Parts: You can find replacement parts (switches, motors, regulators) online through auto parts retailers or at local auto parts stores. Be sure to specify the year, make, and model of your vehicle when ordering.
Remember to reconnect the battery negative terminal once you're finished working on the window system. Good luck!
