Indeed, soon after changing the TC or maybe the encoder, I might reset the method by disconnecting the battery for one/two hour and after that cycle the ignition from on to off three times.
so now I've a fresh transfer circumstance and plus a new encoder motor that i cant put on mainly because it will likely not occur out of nuetral to the trasfer situation Until i change it manually. and since i have to go away the encoder from the front axle wont interact because its not receiving the rigth concept.
It Seems “electrical†to me… accordingly, the initial place I’d commence looking is on the TCCM for corrosion. Then, I’d Have a look at the schematics posted in just this thread and start seeking sensors.
I pulled more than and checked the fuse — almost everything was excellent there, but I decided to improve it just just in case. Still almost nothing. Immediately after trying all the things I could think of, I just experienced to handle it and go on on in 2 wheel drive.
Ryan says: April 2, 2008 at nine:24 pm Many thanks for that response to my write-up earlier, And that i had pep boys do a vacuum examination to the technique and they said just about every thing was appeared to be ok, so i bought that four wheel push swith from napa and mounted it,(it went into the front axle suitable where the cable within the actuator attaches), nonetheless no luck. so i could see some sort of sensor in addition to the transfer situation with 3 vacuum traces connected to it, so i changed i, and Once more nonetheless almost nothing, so I've a pair far more queries…their is another sensor to the tail pice of your transfer case, I used to be informed it's the velocity Handle sensor, could that be the challenge?
Preset that and continue to no 2hi. When I try and modify from 4hi to 2hi I am able to hear the encoder motor & vacuum solenoid on the firewall do their career and likewise the control module clicking so I presume it’s undertaking it’s task. I have 2 lights on sprint triggering fear, ‘Support 4wd’ & ‘ABS’. Would the abs system fault reduce it from likely into 2hi? I do know your not a mechanic but Check this site out have you any information for me?
My 1st query might be, what are definitely the lights to the sprint performing (the 4wd pushbuttons)? And 2nd, what year of car or truck are we chatting? (I’m also assuming we’re however discussing a Chevy Blazer.)
You realize, besides what I’ve posted earlier mentioned about the forks/gears, I don’t truly know Considerably about them — I'd the trouble spelled out to me though I used to be driving residence within the freeway in hurry hour site visitors. I never actually requested any queries further more than that — ’lead to my 4WD worked!
Secondly, your sprint buttons will come out on the dash with very little effort and hard work — pop out the module and check the wiring harness about the back again of that. I’ve heard of people working experience issues with the actual buttons.
Truly, I'm astonished it engaged as if I recall the right way, the vacuum switch communicates Together with the TCCM and customarily will cause the sprint switches to flash if no communication is been given. It's been some time due to the fact I labored on this car or truck even though (and sold it in ’07), so I may be mistaken.
Unfortunately, I don’t have any true encounter Together with the services 4WD light-weight. As I reported to my guest under (just the buy I answered the posts), it always suggests an issue inside the transfer case — difficulties codes must be set, which means you might need to have it scanned by your mechanic.
Your remark about getting into slippery situations and the 2Hi light-weight goes out… The one thing I'm able to think of will be the TCCM (Transfer Circumstance Control Module) can have corroded wires, which was the original topic of the thread. Does this occur automatically when you enter into slippery disorders?
Perfectly, that’s about all I'm able to think of right this moment — if I think of anything else, I’ll update this publish.
Reduced and behold, it really works flawlessly now. Just how long it can very last I don’t know… If any individual learns more about this issue, it would be great to master what is occurring.