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 Mercury Mariner 4WD V6-3.0L VIN 1FACTORY OEM SERVICE PROCEDURE
Engine Control Module: Service and Repair
POWERTRAIN CONTROL MODULE (PCM)
Removal and Installation
1. Disconnect the battery ground cable.
2. Remove the 2 powertrain control module (PCM) stud bolt nuts and position the wiring harness and the manifold absolute pressure sensor aside.
- To install, tighten to 9 Nm (80 lb-in).
3. Disconnect the 3 PCM electrical connectors.
4. Remove the 2 stud bolts and the PCM.
- To install, tighten to 9 Nm (80 lb-in).
5. Remove the PCM cowl seal.
6. To install, reverse the removal procedure.
Removal and Installation
1. Disconnect the battery ground cable.
2. Remove the 2 powertrain control module (PCM) stud bolt nuts and position the wiring harness and the manifold absolute pressure sensor aside.
- To install, tighten to 9 Nm (80 lb-in).
3. Disconnect the 3 PCM electrical connectors.
4. Remove the 2 stud bolts and the PCM.
- To install, tighten to 9 Nm (80 lb-in).
5. Remove the PCM cowl seal.
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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