Wiring diagrams ?

[Smokin 6.0]

Does anyone know where to get diagrams for a 2018 F350 Dually ?

 

[6.0 Tech]

What do you need? I can get you specific ones, as I’ve got access to fords website, but I’m not gonna take 300 pictures and upload them.

 

[Smokin 6.0]

Whatever is going to help me diagnose my AC blower issue. Did you read my other post about the surging issue

 

[6.0 Tech]

Yeah, I just replied to it. I’ll see what I can find when I get to the shop for you.

 

[6.0 Tech]

Here ya go bud. Sorry bout that. I hear ya on not having ac, it’s 100 and **** me out right now, just damn miserable. I don’t remember if you said it’s auto or manual, but the blower motor diagram is the same.

 

[Smokin 6.0]

Ok so digging into this this morning I have power wher I need to so I went into forscan and looked at some of the PID’s for the front climat control panel. Blower speed climate control input start/stop and module voltage found when I run the blower level knob up and down it reacts accordingly I can watch the percentage go from 0-100 on low to high and will stop wherever I set it. Module voltage was 14.6 with truck running. The one I’m confused on is the start/stop input it said off and never changed. Could I have a bad set of control switches ? What’s confusing is I switched that panel with a set I had that I know was good and it still didn’t work

 

[Smokin 6.0]

I just switched the button circuit board with one I had and it’s still the same thing

 

[6.0 Tech]

Can you check for codes in the fcim with for scan? I know there are some vehicles that stupid shit like light bulbs that have been replaced need the code cleared for the new one to work. If there’s a code in the fcim it may need to be cleared, or it may also lead a different direction. It’s been awhile since I took one apart, but I don’t remember the button panel having the module integrated into it. Another thing to check is the ground circuit, or are you checking for power across the power and ground wires?

 

[Smokin 6.0]

I have checked the codes on forscan and there isn’t anything stored in the fcim. I checked across the power wires at the blower plug then to ground and have power both ways.

 

[Smokin 6.0]

I don’t know where the fcim is. It wasn’t in the board that the buttons are on I know that what I changed was just a circuit board.

 

[Smokin 6.0]

I was able to get it to work today on a medium speed. Doesn’t matter if you set it to high or low it’s a constant speed. Also it’s only on when you’re driving. When you slow to stop at a stop sign or light it’s off. Also when it’s turned to max AC it shuts completely off

 

[6.0 Tech]

That is very odd. It’s about gotta be something with the fcim. I’m not 100% sure where that is, it may be behind the screen. I tried to stay away from doing interior shit as much as I could. I’m real good at breaking fragile plastic pieces. Lol

 

[Smokin 6.0]

It’s suppose to go in next Tuesday to ford will see what they say I guess I don’t have the patience to mess with it anymore