On a 2000 Ford F250 4x4 with the 7.3L Power Stroke diesel, the Diesel Injection Pump Module (also sometimes called the PCM or Powertrain Control Module, although that's not entirely accurate - the PCM controls the pump module) is
on the driver's side of the engine, near the top, and typically mounted to the valve cover.
It's a relatively small, rectangular electronic module. It's not directly *on* the injection pump itself, but it's the electronic control brain for the entire fuel injection system. You'll likely see wiring harnesses connected to it.
