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.
2006 Lincoln Navigator 4WD V8-5.4L VIN 5FACTORY OEM SERVICE PROCEDURE
Engine Control Module: Service and Repair
POWERTRAIN CONTROL MODULE (PCM)
Special Tool(s)
Removal and Installation
1. NOTE: Refer to Computers and Control Systems for correct worldwide diagnostic system (WDS) hook-up procedure.
If servicing the powertrain control module (PCM), connect the diagnostic tool to the vehicle. Allow the diagnostic tool to identify the vehicle and obtain configuration data.
- All programmable module information will automatically be retrieved by the WDS.
2. Disconnect the battery ground cable.
3. Disconnect the PCM electrical connectors.
4. Remove the 4 bolts and the PCM.
- To install, tighten to 7 Nm (62 lb-in).
5. If servicing the PCM bracket, remove the 3 bolts and the PCM bracket.
- To install, tighten to 10 Nm (89 lb-in).
6. To install, reverse the removal procedure.
Special Tool(s):
Special Tool(s)
Removal and Installation
1. NOTE: Refer to Computers and Control Systems for correct worldwide diagnostic system (WDS) hook-up procedure.
If servicing the powertrain control module (PCM), connect the diagnostic tool to the vehicle. Allow the diagnostic tool to identify the vehicle and obtain configuration data.
- All programmable module information will automatically be retrieved by the WDS.
2. Disconnect the battery ground cable.
3. Disconnect the PCM electrical connectors.
4. Remove the 4 bolts and the PCM.
- To install, tighten to 7 Nm (62 lb-in).
5. If servicing the PCM bracket, remove the 3 bolts and the PCM bracket.
- To install, tighten to 10 Nm (89 lb-in).
6. To install, reverse the removal 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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