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4ws ecu repair what needs looking at

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Chassis/Brakes/Steering/Wheels discussion
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firstlude
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 Postby firstlude »Sat Jun 03, 2017 8:57 pm

hi all i have this issue with my 4ws not working read the code which i think is 71, seems the ecu suffers from bad solder joints to the main relays , is there anything else i need to check why i have the ecu apart
success is the ability to go from one failure to the next without any loss of enthusiasm :D :D

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Vtecmec
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 Postby Vtecmec »Sat Jun 03, 2017 9:16 pm

Apart from those solder joints they are pretty robust, mine is 26 years old and has had no other issues.................

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firstlude
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 Postby firstlude »Sat Jun 03, 2017 9:39 pm

thats good to no am so hoping this sorts my problem
success is the ability to go from one failure to the next without any loss of enthusiasm :D :D

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 Postby hondaddict »Sun Jun 04, 2017 6:52 am

I never opened any of these units but i suppose that they should have some capacitors on the board.
So if you open it, it surely be a good thing to replace them, as the aluminium electrolitic capacitors are known to leak when become old. :D
Accord Type R , "what else" :lol:

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firstlude
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 Postby firstlude »Sat Jun 10, 2017 7:21 pm

refitted the ecu today and hey presto no more 4ws warning light staying on :D but still no steering from the rear :( it just does like a little twitch and thats it no real movement its almost like the rear steering rack is jammed so looks like i am going to need to give the rack the once over
success is the ability to go from one failure to the next without any loss of enthusiasm :D :D

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wurlycorner
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 Postby wurlycorner »Sun Jun 11, 2017 9:37 pm

That's a bummer.
Check that no-one has fitted a locking pin?

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firstlude
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 Postby firstlude »Sun Jun 11, 2017 10:22 pm

hoping to have more free time next weekend and will check this need to jack rear up to check for the abs fault and exhaust has a blow somewhere
success is the ability to go from one failure to the next without any loss of enthusiasm :D :D

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firstlude
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 Postby firstlude »Sun Aug 06, 2017 11:01 pm

it seems this post kinda runs with another i have for this car but thought i would post my findings here as it completes this post to a finish which may help others , having overcome some other problems i finally got the car into the workshop and over the pit to check the rear rack over and sure enough someone had fitted a locking pin , once this was removed i have a fully working 4ws system :D :D so if you have a 4ws fault first check is the ecu solder joints anyone who isnt up to doing the soldering if you cover the p@p i am happy to do the soldering for free ;)
success is the ability to go from one failure to the next without any loss of enthusiasm :D :D

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 Postby AeroNotix »Sun Oct 29, 2017 6:14 pm

@firstlude, what exactly does the locking pin look like when inserted into the 4WS unit?

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wurlycorner
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 Postby wurlycorner »Sun Oct 29, 2017 7:28 pm

Blimey, amazing that someone had fitted a locking pin and not removed (and even more amazing that it hasn't damaged the rack/motor/ecu on the rear setup, as a result of it being in there so long with the car driven!)

Anyway, glad you've got it sorted 8-)


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