denes claims: June 8, 2008 at four:28 pm The encoder motors typically are unsuccessful within the 2002+ autrotrac (four 4wb buttons) blazers and s10 p/u’s. A printed circuit board Make contact with “cooks out” Within the encoder motor confimation switches. Just so you already know, the A,B, and C switches convey to the TCCM what general change postion they’re in. the P change is usually a singal on the TCCM when to halt the motor (final park postion). I'm very positive A is 2wd, B is 4wd Hello, and C is 4wd lower. When you’re a little bit clever w/ electronics, It's also possible to take care of the TCCM challenges w/ new relays.
So, you’re saying that the lights Will not flash when making an attempt to interact 4Hi? That’s slightly distinctive, with a pair extra modest matters to examine because the lights ought to flash If your TCCM is receiving the signal.
I don’t want to provide you with any lousy information, nonetheless it Seems very similar to what I just went by means of… and it absolutely was the Transfer Circumstance that essential services… terribly. My Blazer most likely only has ten-fifteen hours around the 4WD technique, but the “forks” In the TC had been poorly worn and letting my gears to drift, which developed signs like you describe (among the Many others).
Each individual automobile I passed within the ditch, I just stored praying my 4 wheel travel would occur on… but no these kinds of luck. The actual pisser Here's, I tried it that early morning and all was wonderful… now, when I want it, nothing!
The other wire I would Look at might be the A/T (Computerized Transmission) change lock change — This really is wire #31 and is particularly light green using a black stripe (you will find a lot more webpages with the schematics higher than… the very first is often a hand -composed web page with the TCCM connector pinout). This wire must have voltage placed on it at specified occasions — unfortunately, I have not needed to diagnose that Component of the system, so I don’t know if it ought to be +5VDC or +12VDC (but It'll be one of them!
) The 4lo light justs blinks all the time hardly ever goes in only goes back again to 4hi. I here the press Along with the TCCM and I also hear the encoding motor Click Here To Investigate Functioning also.
It Seems a lot more like “mechanic talk” to me — but who am I? What exactly do they claim being the trouble While using the TCCM? What Portion of it really is terrible?
Well, do Everything you can and allow me to know — And that i’ll do my most effective that can assist you by means of it — I’d choose to see you resolve it far too! Regards;
There’s not a great deal more which i can provide you with, other that to mention I will post the schematics later currently. From there, at the very least you are going to know very well what wires go wherever and you may exam them.
Make your changes. Depending on the form of steering you've, there are two various ways it is possible to regulate your toe. For those who have rack and pinion steering, you ought to convert the internal tie rod itself. Spinning the rod will alter the toe in or out. When you've got a parallelogram linkage system, there will be modifying sleeves you can transform to adjust your toe.
Sad to say, your thoughts are rather imprecise and seem much like every other problem, as described previously mentioned.
I’m not fully positive what leads to the lights to easily blink after which not go into equipment. The first time I place the Blazer in 4Hi this winter, it did just that…. I had to put it in neutral for it to go into 4Hi. Since then, it will eventually shift on-the-fly. Why? I don’t know. There must be sensors both inside the TC or perhaps the encoder motor to Allow it know when it has arrived at it’s meant method… I’d suspect it’s part of the encoder motor, but I’m just guessing.
It only took a few minutes to locate the module and the condition was clearly obvious soon after eradicating the module with the frame to possess a nearer search. The wires/plug connector were badly corroded on a handful of pins — which led to 2 broken wires (pin #1, grey w/ black and pin #6, orange).
What it sounds like, to me, is actually a wiring problem — almost certainly among the encoder and also the TCCM (underneath the kick panel). Have you pulled the kick panel and experienced a look at the TCCM wiring (as pictured int he very first put up of the site entry)?