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 MANUALSFORD2010FOCUS S, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 314 (COMPONENT TESTING)COMPONENT TESTINGMASTER WINDOW ADJUST SWITCH (14540)COMPONENT TESTING PROCEDURE
2010 Ford Focus S, Standard
Component Testing Procedure
2010 Ford Focus S, StandardSECTION Component Testing Procedure
WARNING: This page is about a different car, the 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
MASTER WINDOW ADJUST SWITCH (14540) COMPONENT TESTING
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Power and Ground Checks Before Any Other Tests | C504b, 4, and C504a, 3 C504b, 4, and C504a, 4 C504b, 4, and C504a, 8 C504b, 4, and C504a, 1 C504b, 4, and C504a, 2 C504b, 4, and C504a, 3 C504b, 4, and C504a, 4 C504b, 4, and C504a, 5 C504b, 4, and C504a, 6 |
All Eight Window Switches (at rest) | Closed circuit |
| Left front window circuit | C504a, 6 and C504a, 8 | Up | Closed circuit |
| Right front window circuit | C504a, 3 and C504a, 6 | Down | Closed circuit |
| C504a, 4 and C504a, 6 | Up | Closed circuit | |
| Left rear window circuit | C504a, 6 and C504b, 6 | Down | Closed circuit |
| C504a, 6 and C504b, 5 | Up | Closed circuit | |
| Right rear window circuit | C504a, 6 and C504b, 2 | Down | Closed circuit |
| C504a, 6 and C504b, 3 | Up | Closed circuit | |
| C504a, 6 and C504b, 4 | Lock | Open circuit | |
| Unlock | Closed 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.