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.
2005 Chrysler 300 BaseFACTORY OEM SERVICE PROCEDURE
Engine Control Module: Installation
WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Do not apply paint to ECM or a poor ground will result.
- Position the ECM to the ECM support bracket and install the five mounting bolts. Tighten the bolts to 24 N.m (18 ft. lbs.).
- Check pin connectors in ECM, 50-way and 60-way connectors for corrosion or damage. Repair as necessary.
- Clean pins in the 50-way and 60-way electrical connectors with a electrical contact cleaner.
- Install the 50-way and 60-way connectors to ECM. Tighten connector bolts to 3 N.m (27 in. lbs.).
- Reconnect both negative battery cables.
- Use DRBIII® scan tool to erase any stored companion DTC's from ECM.
Factory Service Tools
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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.