When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
So i recently got a great deal on this truck and am having a perplexing time fixing the 4x4. I have searched and searched for a wiring diagram for any and all of the 4x4 with no luck. The iwe is working fine i can manually shift the transfer case to 4hi 4lo np. Vacuum has zero leaks. My issue is when i switch it clockwise to 4hi and 4lo im fine and have full four wheel hi or low, when i switch counterclockwise back to 2hi it blows fuse f111 for the relays and leaves me stuck in 4x4. The relays are fine and the shift motor is fine. I cannt see any bad wires anywhere but i have not seen anywhere thats not easily available. Any suggestions on how to pin out which wire is bad or a link to someone who has completely run a new harness from the front back? Thanks for any help? My aon is dying to go mudding more than i lol.
thanka so much. I have searched for weeks and almost beoke down and bought a book. Money is tight with xmas and all. I was able to find that the pin 30 for the cw relay has a short to ground (red wire). Once i read the diagram im hopimg i can just splice it at the relay and shift motor harness and bypass the factory wire. Not sure since it comes out of the TC and into the harness. Time to go read that diagram. Thanks again so much!
Is there more wiring diagrams you can show me. Or tell me a good place to download then so i don't bug you? Im looking for the diagram that shows the relays pcm tcm and fuse box wiring. Might just go do the splice and see if it works. I guess my main worry is that the red wire needs to feed something other than just the shift motor.
No problem, I know how much it sucks to not have a diagram.
amen 👌i prefer to do things on my own but even being able to rebuild a transmission i just don't have the resources or spare vehicles anymore to disassemble this truck and treat it with time and care. Adult life 👌
I have the diagrams on my computer but in your case the red wire goes nowhere else except to connector C110. Since C110 is up on the engine it's possible the red wire got chaffed and is touching the block. Here is the location and pinout for C110, pin 9 is your red wire.
Im not sure that is the riggt diagram or harness. That says ac clutch. The ac clutch diode and fuse are in the same box as the cw and ccw relays for the shift motor though. Pin 15 on the male wiring harness and female shift motor harness is the wire i am talking about. I know the relay pin 30 powers the red and it ends up coming out of the transfer case into the shift motor on pin 15. It leaves the relay box and goes under the coolant res into the wiper motor area and across to the passenger side but feom there idk if it goes into the pcm the fuse box or down into the TC. I cannot track it as i dont want to open my harness up. Im sure it is pinched or melted somewhere as that seems to be a common problem but im having trouble tracing it after it enters the main big harness. Also back tracing doesnt help as it enters the transfer case and the main harness coming down is up above the transmission. Lol. What a bugger.
Shift motor and harness. Pin 15 red. Not sure where it runs between relay and here.
relay box. Using a pine needle to point at the pin thats shorted to ground (red)
Im not sure that is the riggt diagram or harness. That says ac clutch.
It is the correct diagram. C110 carries both the AC Clutch and the transfer case motor circuits.
Locate and disconnect C110. Check to see if pin 30 of the relay socket or pin 15 of the motor harness is still shored to ground. This will cut in half the circuit and allow you to get closer to finding the issue.
It's certainly possible that the short is inside the relay box. You'll have to check that as a possibility, also.
It is the correct diagram. C110 carries both the AC Clutch and the transfer case motor circuits.
Locate and disconnect C110. Check to see if pin 30 of the relay socket or pin 15 of the motor harness is still shored to ground. This will cut in half the circuit and allow you to get closer to finding the issue.
It's certainly possible that the short is inside the relay box. You'll have to check that as a possibility, also.
Ahh okay. Thats what i shall do then. Ty guys and inwill keep you updated. I guess i wouldn't be lucky enough to just run a new wire from the relay to the shift motor, suxh is life and the life of a broke 4x4 owner 😂 really do appreciate the help feom you both!
Sorry. Also the diagram for the c110 is not the same engine as mine. Is that maybe the 4.6? My ac is on the far bottom of the passenger side and your picture shows it at the top center? I habe the 5.4 3v triton
12-29-2018, 01:58 PM
