Your challenge Seems similar to ten others over you — when you haven’t uncovered The solution in what I have posted Up to now I, sadly, will not be capable that may help you and counsel taking your motor vehicle into a mechanic.
So, you’re expressing that the lights Never flash when hoping to interact 4Hi? That’s a little distinctive, with a pair much more little items to examine since the lights ought to flash If your TCCM is receiving the signal.
The encoder motor is the very first thing that involves intellect. All over again, I have not tried using this, but when it had been me, I'd try and disconnect the encoder motor and check out all over again (this might not function as the method may perhaps detect the unplugged encoder and never check out to engage 4WD — the dash lights should really flash if it’s making an attempt to interact 4WD). For those who don’t blow a fuse While using the encoder motor replaced, you have discovered your challenge — perfectly, sort of. From there it could possibly be the motor alone, a Bodily obstruction of the motor (the shaft might be frozen (corrosion) for the transfer circumstance protecting against the motor from shifting) or wiring among the encoder motor and the TCCM (a brief from offer to ground).
I currently replaced the balljoint and also the tie rods, but my front passenger wheel remains to be off. What else can I do to fix the alignment.
Great, Jim! I’m happy the posts right here had been capable to assistance. Many thanks for your vacuum diagram! That should be really practical for Many others seeking to diagnose vacuum difficulties.
2) the vacuum swap (Found to the firewall — see among my posts higher than for a picture) or vacuum diaphram (Positioned beneath the battery) could possibly be malfunctioning. The job of these elements is to pull on a cable which engages the entrance, proper 4WD hub.
Very well, that’s one that I haven’t listened to but. The “ATS” fuse (that is marked “ATC” on this schematic) materials 12VDC to 2 substantial orange wires at the TCCM (marked as pins C18 and C19 over the schematic). As I stated, I haven’t viewed this problem right before, so I haven’t traced that Element of the program. I can only believe (yeah, I am aware!) that the simply because these wires offer 12VDC, They can be utilized to run heavier items including the encoder motor (5VDC, and that is the light guage orange wire, is employed for logic — ie. to operate the “chips” about the circuit board). With any luck ,, you may see exactly where I’m heading using this. I’m just trying to consider it logically — If your fuse is blowing that materials 12VDC, what while in the 4WD program would use 12VDC?
I might check your Substantial orange wires as you are receiving +5VDC logic given that the lights are approaching over the dash. The +12VDC is employed for the encoder motor — Look at to ensure you have +12VDC at both the big orange wires (They're right beside each other… and There's two large black wires beside them which might be floor). Notes: All black wires are floor — all orange wires are electrical power (hot). There's a 10A fuse (#15) for the 4WD method, situated in the fuse panel. There is a 20A fuse, Positioned underneath the hood, that is certainly also for that 4WD program (I’ll should search Visit THIS Site for the fuse variety). The 4WD system also pulls from your 10A courtesy lamp fuse (#10).
Sherry claims: September 22, 2008 at 3:fifteen pm I really wish I found your web site ahead of I replaced my tccm. I live in Canada and my 4wd stopped Doing work. I've a 2003 blazer and wherever I Are living 4wd is definitely an absolute must. I took it to your shop and they could not determine the problem, so then I took it into the dreaded vendor. They gave me a quotation of $1800.00 to interchange my encoder motor and transfer case Regulate module. I undoubtedly couldn't manage this so I took the estimate and located the sections on ebay, then I took it to the primary shop and paid out them $200 to put in every little thing.
I used to be quite pleased after they held, that’s needless to say! I mounted the module back again about the frame, reinstalled the kick panel and my 4×four was again in business enterprise.
[twenty] Depending on your steering technique, there may additionally be considered a clamp that should be eradicated at each stop to verify the bellows boot isn't sticking for the inner tie rod. Consult your handbook for particulars.
I’ve meant to consider the heating program because like past Wintertime — just by no means seem to get about to it (it's possible ’cause I don’t use it in the summertime… After i really feel like repairing it!
Usually, the entrance drivers axle is the axle that is forever engaged within the front differential (that doesn’t imply it’s usually driving… only once the entrance diff is engaged will it actually travel). The entrance passenger side axle engages when put in 4WD, through an actuator under the battery.
It doesn’t sound like it’s the identical style of process, so I’m not really positive what to suggest for you. My system can be a purely electronic one (in which you thrust a button, which activates a motor to vary modes in your case)… yours looks like a mechanical technique where you engage the 4WD manually (ground shifter) and the light comes on basically being an indicator.