need 4x4 help!!!

[dieseldan2005]

Guys i keep posting about my 4x4 issues with no help at all. Would anyone know why i am getting a p1867 code and my truck will not go into 4 lo. 4hi works fine, but hit 4lo and you can hear it clunk 2 times and then all the 4x4 lights go out. You can't bring it back to 4hi unless you shut off the truck and restart it. Dealer says its a broken wire somewhere in the harness. I replaced the tcase motor already. Any places to start looking or things to check? The relay box that the harness goes to had black tape on it like the cover had fallen off at one point, could there be an issue in the relay box?

[dieseldan2005]

bump bump bump

[Zaairman]

I'd start looking over all of the wiring... like the dealer told you to do..

[dieseldan2005]

I know, i just don't want to tear the whole dang harness apart if there is something or somewhere else i should start first. I am not 100% convinced that the dealer was right. I want to know how they could tell me that my t case motor was bad if there is a broken wire in the harness??? What i really need is to know which wires are what that make the 4 hi and 4 low work, then i would dig a little deeper. There are way too many wires for me to want to just start pulling things apart.

[Bad Night]

Found this ....

(ESOF) 4X4 system may experience a concern of the 4X4 system being inoperative with diagnostic trouble code (DTC) P1867 (Transfer Case Contact Plate General Circuit Failure).

[dieseldan2005]

Where did you find that? i have found several links to some stuff via google, but nothing that got me anywhere. Is there a link to what you found, cause otherwise it doesn't help me with anything.

[Bad Night]

I just entered in the trouble code on a google search . It really doesn't say anything else . It does kinda support the wiring problem theory though , or possibly a bad electrical board or contact . I would start by checking all plugs related to the trans, case . Clean them and put some de-ox on them . If that doesn't help find out what/where the electrical board is and replace it . If that doesn't get it you will probably have to start probing wires looking for a bad one . In my experience it is very rarely the actual wire and usually the connection at the end or the part it is feeding .

[dieseldan2005]

Oh i hear ya. I know its usually the plugs and not the internal wiring, but i would like to find out what wires run what on each plug.

[Dave]

Best bet would be to get a haynes manual with the wiring breakdown.

I wonder if it isnt the dash switch though

[bigcountrysg]

At least you have 4hi mine won't do anything.

For your problem I know there are clutches in the transcase that can cause this problem.