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I didn’t Believe anything of it apart from that my floor warmth was probably gonna blow in my deal with. The take care of that I performed while in the parking zone on the community vehicle parts retail outlet took five minutes and also the vacuum coupler tube only cost about 75 cents. Thanks yet again for conserving me a butt load of cash!
As to the encoder motor getting fried as the TCCM “got corroded and shorted it out” — once more, it doesn’t appear more likely to me. You will discover (off-the-leading of my head) 7 wires between the TCCM as well as the encoder motor. 2 of them are energy (+/-) and they are FUSE secured. 4 of these are sign lines and the final 1 is signal floor. If the bottom wire was corroded and shorted (to what?
Many thanks for that update — that’s what we wish to hear! I’m glad to are already able to help maintain several of Individuals greenbacks within your wallet — especially at Christmas! Best Regards;
Today at perform, (warm in our shop), checked the TCCM plug, pulled TCCM apart to examine inside of, cleaned anywhere the TCCM contacted the human body to ensure it had been grounded, changed fuse and plugged it in. Yet again it clicked various occasions and default to two-Hello. No blown fuse although. Slice tape and pulled wire loom off EM plug, and no apparant challenge there. Had a helper enjoy 4wd change as I #*@%ed with Each individual individual wire and no fuse blew. I haven’t tried out the motor from the TC as the sheet Using the EM explained it would injury it. I know the EM moves freely and I checked to ensure the TC is free as well. It moves that has a crescent wrench with small exertion. So I shy faraway from a mechanical problem. I am missing and aggravated!! I will try your suggestions ASAP, based upon weather conditions and time, and allow you to know. I choose to resolve it myself to state I did, but I'm actual near to providing it to my community 4wd Professional and stating don’t give it back til its Prepared for snow or mudding!! Thanks Kyle in your aid, and ideally I could possibly get again for you with Great news.
My 1st imagined is TCCM problems. Disconnecting the battery is a normal technique to reset any “OB (On-Board) Laptop or computer” (even though it’s typically advisable to disconnect for half-hour — simply this means you don’t hurry it and it doesn’t reset). So, what you’re accomplishing each time you need to do This is certainly you will be resetting the TCCM. From there, it really works, however , you hardly ever know for how long.
That’s an awesome story! Thanks for sharing that with me… which is all I need! I’m not asking for something, but hearing stuff similar to this helps make me sense fantastic. Good that I was capable of help another person out… and conserve you some cash in the procedure.
Another wire I might Examine could well be the A/T (Automatic Transmission) shift lock switch — This is often wire #31 and is also gentle eco-friendly which has a black stripe (there are a lot more internet pages from the schematics higher than… the main is really a hand -penned site of the TCCM connector pinout). This wire must have voltage placed on it at selected moments — sadly, I have never needed to diagnose that Component of the procedure, so I don’t know if it ought to be +5VDC or +12VDC (but It will likely be one of them!
Thanks for finding my account Doing the job. I nonetheless can’t find out how you can add an image. In any case, good web page, extremely educational. Like most right here, I’m owning an issue with my 4wd on my 2000 Blazer. I do think it's got one thing to try and do Together with the vaccum, but I’m undecided (been way too chilly out doors to actually go into hunting). Absolutely sure want I could discover a vacuum schematic.
Inadequate connections anywhere together the route will result in issues — most occasions intermittently, which happen to be a real PITA to uncover. (See my over posts for resolving this situation.) The TCCM could be poor at the same time.
Nicely, that’s one that I haven’t read nonetheless. The “ATS” fuse (which happens to be marked “ATC” on this schematic) provides 12VDC to 2 massive orange wires at the TCCM (marked as pins C18 and C19 about the schematic). As I explained, I haven’t seen this issue right before, so I haven’t traced that Component of the system. I am able to only think (yeah, I do know!) that the mainly because these wires offer 12VDC, They may be used to operate heavier points such as the encoder motor (5VDC, which happens to be the light guage orange wire, is useful for redirected logic — ie. to run the “chips” over the circuit board). With any luck ,, you are able to see where I’m heading with this. I’m just attempting to consider it logically — In the event the fuse is blowing that provides 12VDC, what within the 4WD technique would use 12VDC?
Hey $one hundred forty is very darn very good in comparison to a number of the estimates I have seen people get to fix their 4WD! Regards;
Raymond Dunne claims: January 7, 2008 at ten:27 am Nicely immediately after alot of your time on my 2001 Jimmy 4wd procedure I'm however stumped. Started off with a clicking sounds from front close so I checked vacuum actuator and it’s doing it work now that I loosened up the cable. Truck is not going to go into 2hi or 4lo so I pulled the Handle module and checked wiring. Massive orange wire on power connector was included in corrosion and 1 wire on 32 pin connector was corroded.
If the do, the problem is while in the wire somewhere between the TCCM along with the encoder motor — And that i don’t envy you being forced to obtain it, if that is the situation. Working with what I've claimed earlier mentioned, and many essential logic, you ought to be capable to explain to inside the TCCM and encoder are speaking adequately.
Actually, it appears like the system is examining the neutral change and may only actuate in neutral. 4Lo is alleged to operate this fashion, but 4Hi must activate the fly.