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.
2012 Ford Expedition EL RWDFACTORY OEM SERVICE PROCEDURE
Component testing procedure
COMPONENTS TESTING PROCEDURE CHART
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these | A good switch will indicate |
|---|---|---|---|
| Washer switch circuit | 10 and 15 | On | Closed circuit |
| Rest | Open circuit | ||
| Wiper switch circuit | 9 and 15 | Off | Open circuit |
| High | Closed circuit | ||
| Low | Open circuit | ||
| 11 and 15 | Off | Open circuit | |
| High | Open circuit | ||
| Low | Open circuit | ||
| 12 and 15 | Off | Open circuit | |
| High | Closed circuit | ||
| Low | Closed circuit | ||
| 15 and 16 | Off | Open circuit | |
| High | Closed circuit | ||
| Low | Closed circuit | ||
| Intermittent wiper circuit | 15 and 16 | Interval 1 | Open circuit |
| Interval 2 | Open circuit | ||
| Interval 3 | Open circuit | ||
| Interval 4 | Closed circuit | ||
| Interval 5 | Closed circuit | ||
| 11 and 15 | Interval 1 | Open circuit | |
| Interval 2 | Closed circuit | ||
| Interval 3 | Closed circuit | ||
| Interval 4 | Closed circuit | ||
| Interval 5 | Open circuit | ||
| 12 and 15 | Interval 1 | Closed circuit | |
| Interval 2 | Closed circuit | ||
| Interval 3 | Open circuit | ||
| Interval 4 | Open circuit | ||
| Interval 5 | Open circuit |
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.