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.
2003 Ford ZX2 AutomaticFACTORY OEM SERVICE PROCEDURE
Component Testing Procedure
WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
HEADLAMP SWITCH - COMPONENT TESTING
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Headlamp | B1 and H | Off | Open circuit |
| Park | Open circuit | ||
| Head | Closed circuit | ||
| Park lamps | B2 and R | Off | Open circuit |
| Park | Closed circuit | ||
| Head | Closed circuit | ||
| Interior lamp | D1 and D2 | Knob rotated fully counterclockwise (in detent) | Closed circuit |
| Knob rotated fully clockwise (out of detent) | Open circuit | ||
| Illumination dimmer | R and I | Rotate knob clockwise | Ohmmeter will show smoothly increasing resistance |
Factory Service Tools
Use the Manual With the Right Hardware
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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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