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 Fiesta L4-1.6LFACTORY OEM SERVICE PROCEDURE
Engine Control Module: Service and Repair
Powertrain Control Module (PCM)
Removal
1. NOTE: PCM installation DOES NOT require new keys or programming of keys, only a Parameter Reset of the Passive Anti-Theft System (PATS).
Retrieve the module configuration. Carry out the module configuration retrieval steps of the Programmable Module Installation (PMI) procedure Programmable Module Installation (PMI). For additional information, refer to Information Bus.
2. Remove the bolt and the PCM cover.
3. Disconnect the 3 PCM electrical connectors.
4. Remove the bolt and the PCM.
Installation
1. NOTICE: The PCM and PCM cover can be easily damaged by excessive fastener torque. Do not exceed 5.4 Nm (47.8 lb-in).
Position the PCM and install the bolt.
- Tighten to 5.4 Nm (47.8 lb-in).
2. Connect the 3 PCM electrical connectors.
3. NOTICE: The PCM and PCM cover can be easily damaged by excessive fastener torque. Do not exceed 5.4 Nm (47.8 lb-in).
Position the PCM cover and install the bolt.
- Tighten to 5.4 Nm (47.8 lb-in).
4. NOTE: If the Programmable Module Installation (PMI) procedure was not successful in downloading the data from the vehicles original PCM, then the oil life data of the vehicle is lost. If this occurs, and the oil life cannot be determined through service history or customer interview, it is recommended the vehicle engine oil and filter be changed and the oil change minder reset.
Restore the module configuration. Carry out the module configuration restore steps of the Programmable Module Installation (PMI) procedure Programmable Module Installation (PMI). For additional information, refer to Information Bus.
5. Reprogram the PATS (Passive Anti-Theft System). Carry out the Parameter Reset procedure Passive Anti-Theft System (PATS) Parameter Reset. For additional information, refer to Antitheft and Alarm Systems.
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.