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.
2002 Ford ZX2 AutomaticFACTORY OEM SERVICE PROCEDURE
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 |
Factory Service Tools
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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.
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