I've made every effort to double and triple check the above info (and in the next couple of pages) and I've used the best sources to compile it, but nothing in life is perfect. You should never disconnect any of the PCM connectors without first disconnecting the battery negative (-) terminal.To see what this tool looks like: Wire Piercing Probe.You should use a wire piercing probe and probe the wire a few inches away from the connector.Never probe the front of the connector.Why? Because this is the clearest indication that these ARE NOT the connector pin out charts for your particular Ford 4.0L Explorer or 4.0L Ford Ranger. If one or any of the wires on your Ford pickup DO NOT match the color stated in the pin out charts, then you should not use the pin out charts in this article.Here are some very important safety precautions when testing the wires coming out of the 60 pin PCM connector. VREF (5 Volt Reference - EGR Position Sensor, TPS, MAP Sensor)Ĭlutch Switch (MT only) Park Neutral Safety Switch (AT only). 1994 4.0L Ford Explorer/Ranger 60 Pin Connector Below you'll find the description of each pin. Whether you're tracing down an electrical short or testing one of the input/output components of the PCM, pinout charts come in handy. The 1994 4.0L V6 Ford Explorer/Ranger is equipped with the E.E.C IV system and so its computer has 60 pins.