The Greatest Guide To 4 wheel alignment measurementsI would Examine your Big orange wires as you might be finding +5VDC logic given that the lights are coming on over the dash. The +12VDC is utilized for the encoder motor — Look at to ensure that you have +12VDC at both of those the big orange wires (They're proper beside one another… and There's two substantial black wires beside them which might be floor). Notes: All black wires are ground — all orange wires are energy (sizzling). You will find there's 10A fuse (#fifteen) to the 4WD system, situated in the fuse panel. There exists a 20A fuse, Found under the hood, that's also with the 4WD system (I’ll have to lookup the fuse amount). The 4WD technique also pulls within the 10A courtesy lamp fuse (#ten).
The encoder motor is the first thing that comes to thoughts. Yet again, I haven't tried using this, but when it had been me, I'd attempt to disconnect the encoder motor and take a look at again (this will likely not perform given that the system may possibly detect the unplugged encoder and not try out to engage 4WD — the dash lights need to flash if it’s hoping to have interaction 4WD). In the event you don’t blow a fuse With all the encoder motor replaced, you have found your dilemma — properly, type of. From there it could both be the motor by itself, a physical obstruction on the motor (the shaft could be frozen (corrosion) towards the transfer scenario protecting against the motor from moving) or wiring among the encoder motor along with the TCCM (a short from source to ground).
Sadly, I’m not really the guy to help you Along with the vacuum line as I’ve never had any issues with the vacuum and haven’t experienced the need to trace hoses. You might like to Check out this put up to discover if it would be of any guidance to you personally.
For those who look at the schematics, you can begin to see the motor is just “controlled” with the TCCM through signal wires. I suppose it’s feasible that if one of several motor wires have been for being shorted it may cause harm to more the TCCM — do I feel This can be the circumstance?
Now, there is a sensor around the front, correct hub to detect when it can be engaged — I haven't tried out this, so I don’t know 100% for sure, but When the front, correct hub will not be engaging, the procedure should really detect this and never enter 4WD.
If you select to get started on a whole new forum topic, you could attach files on your publish. If you choose to add an image, it will create a new topic within just my website (which I'll then shift to be integrated within your original publish).
It quite effectively could be a mechanical dilemma inside the transfer situation triggering the motor to draw extreme present and blow the fuse. Does the motor work perfectly, when NOT attached to the transfer scenario?
Obviously, I'm able to’t promise this is your difficulty, Specially via the internet, And that i hope it isn’t — but I might have it checked out professionally.
The back links into the data files have been eliminated as I did not recognize they had been uploaded to some file server to submit listed here. I should have backed them as many as my server, but did not — I apologize for that.
Current twelve/twelve/07 – I just wished to insert to this article the TCCM has two relays within just that Management the actual switching of the encoder motor — you that is certainly what you listen to “clicking” after you try out to engage the 4WD program.
The vacuum switch shouldn’t make Significantly noise, not plenty of to generally be bewildered with some thing operating. What I think is you might be hearing the encoder motor about the transfer circumstance attempting to shift it into 4wd.
As I claimed, I haven't examined any in the button wires, as I have not experienced that individual issue (however) — so, prior to deciding to make this happen, you'll want to validate what I am indicating is correct.
It’s not easy to diagnose challenges like this without having the ability to examination matters — but it really seems like either the TC encoder motor signal strains are undesirable (a foul ground may be a dilemma far too) or even the “forks” within the transfer situation are worn, permitting the gears to drift, in which circumstance the gears for 4Hi is probably not going into location.
I’ve nonetheless received to get some schematics posted for one more visitor poster previously mentioned — hopefully I will make sure to achieve this today. Regards;