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.
2007 Mercury MontereyFACTORY OEM SERVICE PROCEDURE
Component testing procedure
WARNING: This page is about a different car, the 2007 Mercury Montego and 2007 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
IGNITION SWITCH (11572) - COMPONENT TESTING
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Run/Start power circuit | 4 and 1 | Off/Lock | Open circuit |
| Accessory | |||
| Run | Closed circuit | ||
| Start | |||
| Run/Acc power circuit | 4 and 6 | Off/Lock | Open circuit |
| Accessory | Closed circuit | ||
| Run | |||
| Start | Open circuit | ||
| Start power circuit | 4 and 7 | Off/Lock | Open circuit |
| Accessory | |||
| Run | |||
| Start | Closed circuit | ||
| Key In | 4 and 5 | In | Closed circuit |
| Out | 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.