4ws ecu repair what needs looking at

firstlude · Post by **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

Post by **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.................

firstlude · Post by **firstlude** » Sat Jun 03, 2017 9:39 pm

thats good to no am so hoping this sorts my problem

hondaddict · Post by **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.

firstlude · Post by **firstlude** » Sat Jun 10, 2017 7:21 pm

refitted the ecu today and hey presto no more 4ws warning light staying on

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

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Sun Jun 11, 2017 9:37 pm

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

firstlude · Post by **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

firstlude · Post by **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

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

AeroNotix · Post by **AeroNotix** » Sun Oct 29, 2017 6:14 pm

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

89 UKDM BA4 4WS (resto job!) · Post by **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

Lude Generation

4ws ecu repair what needs looking at

4ws ecu repair what needs looking at

Re: 4ws ecu repair what needs looking at