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.
Powertrain Control Module - Installation
2009 Jeep Wrangler 4WD V6-3.8LSECTION Powertrain Control Module - Installation
INSTALLATION
Use a diagnostic scan tool to reprogram the new Powertrain Control Module (PCM) 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. Install PCM (1) and three mounting screws (3) to vehicle.
2. Tighten screws to 4 Nm (35 in. lbs.).
3. Check pin connectors in PCM and four 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.
4. Install four electrical connectors to PCM.
5. Install plastic shield to electrical connectors. Shields snap to connectors.
6. Install battery cable.
7. Use a diagnostic scan tool to reprogram new PCM with vehicles original Vehicle Identification Number (VIN) and original vehicle mileage.
RENDER: 1.0x
NO RELATED
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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.