* Under the hood: This is the most common location. Look near the firewall, often tucked away and possibly secured to a bracket. It might be near the air cleaner housing, or even underneath it.
* Under the dash: Less common, but possible on some models. This would require removing some interior panels to access it.
To find it with certainty:
1. Consult your owner's manual: This is the best resource. It will have diagrams showing the location of major components, including the ECM.
2. Check online resources: Websites specializing in Dodge B250 repair or forums dedicated to the van may have pictures and discussions about ECM locations for specific years. Be sure to specify the year, engine size, and any other relevant details when searching.
3. Use a wiring diagram: A wiring diagram for your specific year and model will show the location of the ECM and its connectors. You can find these diagrams online (sometimes for a fee) or through a parts store.
Important Note: The ECM is a sensitive electronic component. Avoid touching its internal components and handle it carefully. If you need to access it for repairs, it's best to have a qualified mechanic do so.
