The fuel pump relay location on a 2002 Chrysler PT Cruiser is in the
Power Distribution Center (PDC), which is located in the underhood fuse box. It's *not* a stand-alone relay easily identifiable like some cars. You'll need to consult your owner's manual or a wiring diagram to pinpoint the exact relay location within the PDC. The manual will show a diagram of the fuse box with each relay and fuse clearly labeled.
Without the diagram, visually identifying it is difficult, as relays in the PDC often look very similar. Trying to locate it by trial and error could lead to damaging other components.