To be certain, you should:
* Consult your owner's manual: This is the best source for the exact location of all your vehicle's components.
* Look for a large, rectangular computer-like module: The PCM is usually black and has numerous connectors.
* Search online for "2000 Ford Explorer PCM location" with images: A visual search may help you locate it based on pictures from other owners.
Remember to be careful when working near engine components. Always disconnect the negative battery terminal before attempting any work on the PCM or other electrical components.