Jimmy, That throttle pedal seems to do a lot more than the electronic ones I'm used to. They usually have only 3 wires (power, ground, & signal) from the pedal position sensor.
You said earlier that the pedal was brought into your shop for repair. I assume the machine is nowhere near you, correct..?
Next question, and I apologize for not asking it earlier. Need the wire colours and numbers of the 7 wires that are installed in the mating male connector in the machine harness that connects to the throttle pedal. Every wire in a Cat harness is identified with a colour and a number. The number will be printed on to the surface of the wire insulation every couple of inches along its length. There is a "wiring protocol" in Cat's harness design so a 565 Pink wire (for example) will always be used for the same thing no doesn't matter what machine it's used on. If we can find out what are the wire colours and numbers in the machine harness it may give some idea of what function each wire serves.
I've been busy all week with a payload study otherwise I'd have been into it a bit earlier. Let me try to get hold of the machine arrangement for that particular Serial Number of 928G and see if it was built with any sort of whacky left-field attachments installed on it. We may be looking at a "Cat Custom Shop-built" machine here. According to the engine Serial Number that was built in Belgium in May 1999 so I think your comment about it being a European-built machine is correct, most likely at Cat's Gosselies plant. I didn't think that made any difference to electronic components like sensors though, maybe I was wrong in that.
A comment about the pedal illustration that KSH posted above that fits 928H. I went into the 928H electrical schematic and it still only shows a 3-pin connector from the throttle pedal position sensor, exactly the same right down to the wire numbers and colours (see comment above) as the later versions of the 928G.