Tacoma electrical issues

Hello everyone, My name is Oskar and I am new to this forum. I have just purchased a pre-owned 2018 Tacoma and there is a bunch of electrical issues with the truck. I don’t know much about cars so I’m hoping that you guys can help me with it.
- Power door lock not working (on all doors).
- Horn not working.
- PCS malfunction.
- Rear camera not working.

Thanks in advance.
*** I have checked the fuses and them seemed fine.

 

These issues were working when you purchased the truck?

 

In on my phone, with only the 2017 electrical wiring diagram, but I think I've found enough info for you.

There are 2 connectors that are shared between all of those systems (minus PCS because I don't have that in my EWD).
1D and 1F.

1D


1F


Green: Horn
Yellow: Door locks
Red: Rear view camera



I have also attached further info for the connectors.

 

Thank you so much. I fixed the horn and the door lock issues. Apparently I didn't check the fuse box under the steering wheel. It was missing a couple of fuses so I added them and it solved the problem. I also found out that the camera was disconnected but I couldn't connect it because for some reason the harnesses don't fit. I have ordered a new set of harness on ebay, hopefully I can get it to connect.

About the PCS system, I think the reason why it is not working is because my truck has been lifted a little bit. I actually don't need that function at all, is there a way for me to permanently remove it? Because the PCS malfunction message on the dash is too annoying.

 

No they were not. I got the truck for a cheap price so I only cared if the engine was good.