ecodiesel owner 2015
New Member
- Aug 10, 2025
- 1
- 0
- Truck Year
- 2015
I have a 2015 ecodiesel bighorn and cannot find a wiring diagram for the radiator cooling fan. I am trying to figure out where the wiring originates at the ECU. The fan works when the AC is on and I can actuate it with the scanner. The scanner is also seeing a signal calling for the fan for a few seconds then the engine light comes on. I suspect that the wire is shorted out somewhere. I am thinking I could run new wire if I can figure out where it originates. Has anyone else had similar issues with the fan? Thanks for any ideas! Has anyone found a good wiring diagram. The code is P0691 Fan 1 Ctrl Circ Low
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