To be certain, you should:
* Consult your owner's manual: This is the best place to start. The manual should have a diagram showing the location of major components, including the PCM.
* Look for a large, rectangular module: The PCM is usually a fairly large black plastic box with many connectors.
* Check online forums: Search for "1996 Ford Ranger 2.3L PCM location" on forums like Ford-trucks.com or similar sites. Other owners may have posted pictures of their PCM's location.
Important Note: Before attempting any work near the PCM, disconnect the negative battery terminal to prevent electrical shorts and damage.