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.
2007 Jeep Wrangler V6-3.8LFACTORY OEM SERVICE PROCEDURE
Engine Control Module - Installation
INSTALLATION
Use a diagnostic scan tool to reprogram the new Engine Control Module (ECM) with the vehicles original identification number (VIN) and the vehicles original mileage. If this step is not
done, a Diagnostic Trouble Code (DTC) may be set.
1. Check pin connectors in ECM and electrical connectors for corrosion or damage. Also check pin heights in connectors. Pin heights should all be the same. Repair as necessary before installing electrical connectors.
2. Install two electrical connectors to ECM.
3. Install ECM (2) and mounting screws (3) to vehicle.
4. Tighten screws to 4 Nm (35 in. lbs.).
5. Install plastic shield to electrical connectors. Shields snap to connectors.
6. Install negative battery cable.
7. Use a diagnostic scan tool to reprogram new ECM with vehicles original Vehicle Identification Number (VIN) and original vehicle mileage.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.