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.
2021 Ford Edge STFACTORY OEM SERVICE PROCEDURE
External Controls - System Operation and Component Description: Notes
System Diagram
Network Message Chart
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Brake switch position | BCM | Input from brake switch necessary to change gears. |
| Gear data | GSM | Message sent to PCM which gear is commanded. |
| Gear confirmation | PCM | Input to GSM confirming gear selection. |
| PRNDS mode | IPC | Used for PRNDS display. |
| Gear command | PCM | Input to change gears. |
| Key in ignition status | BCM | Input used to change gears. |
| Seat belt buckle data | RCM | Input from seat belt buckle to determine driver presence. |
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.