Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1999TAURUS LX, 3.0 SREPAIR AND DIAGNOSISBODY & FRAMEWINDOWSPOWER WINDOW SYSTEMSYSTEM TESTSTEST C: ONE POWER WINDOW INOPERATIVE
1999 Ford Taurus LX, 3.0 S
Test C: One Power Window Inoperative
1999 Ford Taurus LX, 3.0 SSECTION Test C: One Power Window Inoperative
NOTE:
After making any repair, repeat Generic Electronic Module (GEM) self-test using NGS tester.
- Determine inoperative window. Test master window control switch and inoperative window switch. See MASTER WINDOW CONTROL SWITCH and SINGLE SWITCH under COMPONENT TESTS. If both switches are okay, reinstall switches and go to next step. If switch is defective, replace appropriate switch.
- Disconnect inoperative window motor harness connector. Connect a test light or voltmeter between suspect window motor harness connector terminals. Turn ignition switch to RUN position and operate master window control switch up and down for inoperative window. If battery voltage does not exist, go to next step. If battery voltage exists, ensure window tracks and mechanisms are not causing window to bind and repair if necessary. If window is not binding, replace window motor.
- Remove single window switch for inoperative window. Check resistance of circuits between inoperative window motor and single switch. For wire color identification, see WIRING DIAGRAMS . If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in appropriate circuit.
- Remove master window control switch. Check resistance of circuits between single switch for inoperative window and master window control switch. For wire color identification, see WIRING DIAGRAMS . If resistance is 5 ohms or less, replace single switch. If resistance is greater than 5 ohms, repair open in appropriate circuit.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.