Engine Control fuse blowing, 2 Questions

91 XJ, I6 H.O.

I have 2 questions related to the title. I know that the Fuel pump, injectors, coil, O2 sensor, GENERATOR FIELD and ENGINE CONTROLLER AUTOMATIC TRANS. CONTROLLER (ATCU) are on this circuit. Found this info in the FSM.

What are/is the "generator field" and "ATCU"?? I'm trying to trace all wiring on the Engine control fuse circuit.

thanks!

Generator field would be in the alternator. ATCU is the computer box that controls the automatic transmission.

Thanks winter...
Saying "in the alternator" would that mean i would need to replace the Alt? If i get it tested could they tell if the Gen. field is bad?
ATCU is "computer box that controls the automatic transmission" is that seperate from the PCM?

BTW: the ONLY time this fuse blows is on the trail's AND on a hill climb....its a jeep, i dont get it! I did replace the motor mounts, they were shot. I was kinda thinking when the engine was under a lot of load with bad motor mounts possibly the engine was "twisting" and shorting a wire?



thanks again

FIXED!!!! I Cleaned a few connectors, changed motor mounts (SEE ABOVE, they were shot) Zip tied a few wires back!! Bingo! ALL GOOD!
I think alot had to do with the motor mounts, the problem would ONLY happen on a hill climb UNDER LOAD. Twisting and torque on the engine could have been pinching a wire causing the short.

Hope this helps someone,

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