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.
2008 Ford Focus L4-2.0LFACTORY OEM SERVICE PROCEDURE
Engine Control Module: Service and Repair
POWERTRAIN CONTROL MODULE (PCM)
Removal
1. NOTE: Any PCM replacement will require that ALL customer keys are available to be programmed at the time of installation. PCM replacement DOES NOT require new keys.
Retrieve the module configuration. Carry out the module configuration retrieval steps of the Programmable Module Installation procedure.
2. Remove the air cleaner outlet pipe.
3. Disconnect the 3 PCM electrical connectors.
4. Remove the 2 bolts and the PCM.
Installation
1. Install the PCM and the 2 bolts.
- Tighten to 8 Nm (71 lb-in).
2. Connect the 3 PCM electrical connectors.
3. Install the air cleaner outlet pipe.
4. Restore the module configuration. Carry out the module configuration restore steps of the Programmable Module Installation procedure.
5. Reprogram the passive anti-theft system (PATS). Carry out the Key Programming Using Two Programmed Keys procedure.
Removal
1. NOTE: Any PCM replacement will require that ALL customer keys are available to be programmed at the time of installation. PCM replacement DOES NOT require new keys.
Retrieve the module configuration. Carry out the module configuration retrieval steps of the Programmable Module Installation procedure.
2. Remove the air cleaner outlet pipe.
3. Disconnect the 3 PCM electrical connectors.
4. Remove the 2 bolts and the PCM.
Installation
1. Install the PCM and the 2 bolts.
- Tighten to 8 Nm (71 lb-in).
2. Connect the 3 PCM electrical connectors.
3. Install the air cleaner outlet pipe.
4. Restore the module configuration. Carry out the module configuration restore steps of the Programmable Module Installation procedure.
5. Reprogram the passive anti-theft system (PATS). Carry out the Key Programming Using Two Programmed Keys procedure.
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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