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4ws error codes - What next??

 
Old 02-18-2010, 10:51 AM
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Default Re: 4ws error codes - What next??

Hmm. i tried to take out my Sub steering sensor . Didn't have much luck. A lot of Hydraulic lines go in fornt of it :S . Guess i have to order a new one, so the mech just replaces it and i won't make a servo hydraulic mess in my garage xD. Does anybody know a place in Washington D.C. where i can order a sensor for 4 gen 92 prelude?
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Old 03-01-2010, 07:59 AM
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Default Re: 4ws error codes - What next??

Well. No responce xD.

A few weeks passed, and a lot of "thonking on the trouble" processes have been made. currently i managed to move the wheels, in a half inch radius but it only works when the fwd wheel is fully turned right. maybe the front steering sensor just need a little readjustment.
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Old 03-01-2010, 10:15 AM
  #153  
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Default Re: 4ws error codes - What next??

order online.
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Old 03-22-2010, 08:14 PM
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Icon6 Re: 4ws error codes - What next??

wstef is a genius...

I had 4WS Error code 62 and was considering blindly following wstef's soldering procedure on my 92 Si 4WS. While taking my time researching these threads, I found that on a rainy day the 4ws light didn't come on and the rear wheels started turning. I figure the moisture in the air provided just enough conductivity to jump some electrons across the failing solder joint.

I jumped on wstef's solder procedure, plugged everything back in and waited to hear the relays thwak to life... THWAK... 4WS module works like a charm!!

Thanks wstef... I owe you too.

Does anyone think that the way these relays jump to life causes the solder joint to fatigue over time? I think I recall someone saying the location of this module over the rear wheels may cause excessive vibration to these relays.

What's the longest someone has run with this fix? Should I expect to repeat the soldering 20k miles down the road?
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Old 11-10-2010, 10:53 PM
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Default Re: 4ws error codes - What next??

thanx
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Old 08-22-2011, 02:13 AM
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Default Re: 4ws error codes - What next??

So I had the 62 error code on my '93 4ws. Opened my 4ws control unit yesterday and saw that the relay solderings were really bad. After I resoldered the relays I now get TWO error codes. Both 62 and 63. Why could this be? Is it possible that the relays themselves are bad, and I need to replace the relays entirely?

EDIT: Lol, I just blew the 4ws fuse when disconnecting the control unit. Replacing the fuse was all it took. The soldering worked, and now the 4ws light goes off every time I start up. Awesome!

Last edited by painkiller; 08-30-2011 at 12:16 AM.
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Old 10-26-2011, 06:28 AM
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Default Re: 4ws error codes - What next??

Hi all, i am having 62 error of 4ws, i have resoldered these 2 relays, but the error is still here, has anyone any ideas?

EDIT: and how to check if the 60A fuse in engine bay is okey or not?

Last edited by justsbshop; 10-26-2011 at 06:49 AM.
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Old 07-22-2012, 05:25 AM
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Default Re: 4ws error codes - What next??

Update on status! The front sub steering angle sensor was good, didn't have to order new one The only problem with it was that in the previous maintenance the mech torqued both of the sensor body parts fully in and tightened the locknuts xD...... no comment. After a few month of diagnostics i found this out, adjusted it, but still had the code of 20. I took the car to a nother mech, who renewd my whole steering gear box becouse it was in a very bad condition, even leaked, and the shaft inside was moving like hell :S, 2 days ago recived it back, adjusted the 2 front sensors again, and voi' la DTC 20 is no more ))))) Yeeehaaa.

But for things not to be so easy, instead of a working 4ws i have a new code. even after resetting 4ws ECU..... Code 44 .... The maintenance says i have to replace 4ws comp..... So i'm happy again doing further diagnostics on the system xD

If i can fix the problem without replacing computer, i will write down the steps, maybe it can help for people, who still have code 62 after resoldering, or who has the same prob :/
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Old 07-22-2012, 01:37 PM
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Default Re: 4ws error codes - What next??

if you change the steering rack before,,do the sensor alignment for 3 of the angle sensor.2 or 3 hrs job ,follow the the service manual.it should works.GL
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Old 09-08-2012, 07:07 PM
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Default Re: 4ws error codes - What next?? (pervyperry)

Originally Posted by wstef View Post
As there are many asking people, I will describe what to do (it is a copy of mail sent to pervyperry):

I will describe you how to do. To do this you must be familiar with some electromechanics. If you are not, please ask someone to do this, otherwise you can permanently damage the 4WS unit. And sorry for my poor english - I have learnt it at school, but never used after.

I have bought a second 4WS unit (mine is working fine for the moment), when I put it into my car for tests it was showing a permanent error code 62: rear accurator or something like that.

As my accurator worked fine with my original unit, I considered that the problem must be inside 4WS unit. After some hours I found a problem: broken solderings inside 4WS unit, due to age of the unit or (and) vibrations.

The solution is to resolder these broken points inside the unit.

1. Disconnect battery
2. Remove 4WS unit from car (before to get access you have to take off left rear seat and rear moulding inside trunk): disconnect 3 (If I remember well) connectors, 1 or 2 grounds, remove metal cover, and finally remove the unit.
3. Open 4WS unit (6 screws) and carefully put the cover (there is an electronic board connected with one electrical stripe) on the side. I used a big large book to put the cover on and not to brake the stripe. Finally you will have cover on the left side (laying on the book) and open 4WS unit on right side.
4. Remove internal metal cover you will see on the right side (some screws) and take it off.
5. You will see a lot of electronical (and electromechanical) parts inside. There are two black boxes (about 1 cm x 1.5 cm) little under the center of the unit. These boxes are 2 small relays. The problem is there!!! , but on the other side of electronic board, so next step is....
6. Remove the main electronic board from the box: remove all screws that fix the board to the box and other components: I am unable to say you exactly how many of them you have to unscrew - I just don't remember, but you will see yourself what is keeping the board in place. Also it is necessary to unscrew 8 big transistors from box (serving as radiator).
7. When the board is unscrewed, put some protecting paper (ex. newspaper) on the cover board laying on the book and carefully extract the board from aluminium box. Put it on the newspaper with solderings side upper.
8. These 2 relays are soldered 4 or 5 points every of them. These are big solderings. I took a magnifing tool (don't know exact english name - zoom ???) and carefully watching the relays solderings I considered ALL of them were broken.
9. Resolder all relays points and mount the unit.
10. After reputting it in the car problem's GONE!!!!



Modified by wstef at 9:54 AM 6/15/2004
I THANK YOU, my Prelude SI thanks you, more importantly, my wallet thanks you
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Old 12-21-2014, 03:02 PM
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Default Re: 4ws error codes - What next??

This ten year old thread has been an invaluable source of information for me. The weather here has been hot for a couple of months now and my 4ws system has rarely been working so I finally found some time and fixed it yesterday.
I removed the computer, disassembled it and resoldered the troublesome solds on the relays. There was one reasonably big crack on one sold. The others looked ok but I did them all just to be sure.
I put computer back in and system worked straight away and has not had a problem since. Thankyou to all who wrote and contributed to this thread. It has fixed a big problem for me at no cost.
To those who try this fix in the future I think the biggest point to make to have a successful outcome is to be very gentle with the electronics inside the computer especially the ribbon of wires which connects the two circuit boards, if you accidentally break that it will be pretty well impossible to fix and you will have to source another computer.
Thanks again to all, it's awesome to have th 4ws system working all the time as it should,
BlackCatt
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