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Can anyone recommend a scan tool that has wiring diagrams?

Aug 10, 2025
2
0
Truck Year
2015
Good morning,

I am going to buy a scan tool and I need one that has access to wiring diagrams. I have a 2105 ecodiesel and am having a hard time tracking down the wiring for an inoperative cooling fan. Fan is good, works with commands from the AC and tests with a scan tool that can activate the fan. It appears that the ecu is sending the signal for a few seconds when graphed and that is when the error code pops up. It seems like these diagrams are top secret! Thanks for any help!
 

Jimc295

New Member
Apr 24, 2025
3
0
Truck Year
2018
Not a scan tool but incredibly helpful with wiring diagrams and how to info. Alldatadiy reasonably inexpensive for an annual subscription and it is always up to date
 
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