Laguna II - ABS not working but no warning lights ? - Page 12 - Renault Forums :: Independent Renault forum

Brakes/Hubs Brakes, Hubs, and etc

 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #56 of 82 (permalink) Old 13th December 2011
Member
 
dannyc's Avatar
 
Join Date: Dec 2011
Posts: 60
Nominated 0 Times in 1 Post
Nominated TOTW/F/M Award(s): 1
Thanks: 7
Thanked 11 Times in 8 Posts
Re: Laguna II - ABS not working but no warning lights ?

yes i must agree its a very long thread but i took the time read it from start to finish so it would help me other people with abs problems should read it all

i think the pins are to blame as there not 100% fixed to the pcb i think moisture can get in as there was a little rust in mine (i forgot to take a pic yesterday but have done now) they must be a very slight vibration from the engine and after 10 years was worn some of the contacts away some solder could do wonders i suppose

theres not really enough room to remove the ecu in situ unless you bend the brackets but most would only do on there own car not on someone else's e.g. a customer, should'nt really but i really didnt wonna bleed the brakes, or take the bumper off, but i did it so other's can

oh and just to edit a mistake the tyre i quoted is 47 not 42 there is an ebay shop but the moderator removed the shop name
Attached Thumbnails
Click image for larger version

Name:	IMG_0291[1].jpg
Views:	163
Size:	73.8 KB
ID:	14714   Click image for larger version

Name:	IMG_0292[1].jpg
Views:	157
Size:	47.0 KB
ID:	14715  
Currently in dannyc's garage:
2002 bmw 330 e46, 2012 ford transit connect
dannyc is offline  
Sponsored Links
Advertisement
 
post #57 of 82 (permalink) Old 14th December 2011 Thread Starter
TTT
Platinum member
Technical Supremo
Threadstarter
 
TTT's Avatar
 
Join Date: Jun 2008
Posts: 1,985
Nominated 3 Times in 7 Posts
Nominated TOTW/F/M Award(s): 4
Thanks: 199
Thanked 399 Times in 348 Posts
Re: Laguna II - ABS not working but no warning lights ?

Quote:
Originally Posted by dannyc View Post
....i think the pins are to blame as there not 100% fixed to the pcb i think moisture can get in as there was a little rust in mine (i forgot to take a pic yesterday but have done now) they must be a very slight vibration from the engine and after 10 years was worn some of the contacts away some solder could do wonders i suppose....
Hi,
I'm a bit confused here, what pins are you talking about? the pins I'm on about are inside the ECU, the top 3 rows of pins in the picture below

The rust you can see on your attached pictures is nothing that would stop anything working, it's just the metal on the ends of the solenoids that has a bit of surface rust. The ECU isn't sealed to the valve block so moisture / water can get in between the two, hence the rust you can see on yours.

Water can't get inside the ECU as it's sealed, the solenoids are mounted on silicone to cushion them, this silicone also seals the pins from the solenoids to the circuit board, in fact you can see where the silicone has came through the pin connection holes at the bottom Left in the picture below.






Cheers.
Currently in TTT's garage:
2001 Renault Laguna II 1.9dCi Dynamique Sport Tourer
TTT is offline  
post #58 of 82 (permalink) Old 14th December 2011
Member
 
dannyc's Avatar
 
Join Date: Dec 2011
Posts: 60
Nominated 0 Times in 1 Post
Nominated TOTW/F/M Award(s): 1
Thanks: 7
Thanked 11 Times in 8 Posts
Re: Laguna II - ABS not working but no warning lights ?

im refairing to your picture of these "push fit pin's" slight vibration on the multiplug could cause the pins to wear away the contact at the pcb theres 40 pins there only takes one to loose contact to make it play up,

im thinking about soldering the multi plug pins back to the ecu and testfitting it to the car, just so we all know.
Currently in dannyc's garage:
2002 bmw 330 e46, 2012 ford transit connect
dannyc is offline  
 
post #59 of 82 (permalink) Old 14th December 2011 Thread Starter
TTT
Platinum member
Technical Supremo
Threadstarter
 
TTT's Avatar
 
Join Date: Jun 2008
Posts: 1,985
Nominated 3 Times in 7 Posts
Nominated TOTW/F/M Award(s): 4
Thanks: 199
Thanked 399 Times in 348 Posts
Re: Laguna II - ABS not working but no warning lights ?

I get it now, it doesn't take a lot to confuse me these days

Yeah I would love to know if soldering the pins in the ECU would cure the problem.

I soldered all of the pins in my ECU including the pins from the solenoids, I had to pick the silicone off around the solenoid pins so I could solder them. You'll need a good quality flux as the solder wasn't to keen to flow on some of the pins but I got them all done eventually.

I would love to try the old pump with the soldered ECU back on but as the ABS pump isn't the most accessible item and as I removed the whole pump I would really have to try the full old pump back on to see if the problem had been fixed, that involves all the brake fluid mess & bleeding the system again

To be honest I'm lacking in enthusiasm at the moment especially as it's so cold & damp outside, if the pump was more accessible or if I had a nice warm dry garage to mess on in I would probably change it as I would love to satisfy my curiosity.








Cheers.
Currently in TTT's garage:
2001 Renault Laguna II 1.9dCi Dynamique Sport Tourer
TTT is offline  
post #60 of 82 (permalink) Old 14th December 2011
Banned User
 
Join Date: Feb 2008
Posts: 1,675
Nominated 0 Times in 9 Posts
Nominated TOTW/F/M Award(s): 3
Thanks: 17
Thanked 142 Times in 132 Posts
Re: Laguna II - ABS not working but no warning lights ?

How about checking continuity between pins and circuit board?
Currently in tolsen's garage:
Trekka 1.9 DCI, Smart Cabrio Cdi (65 - 85 MPG) & Ford Transit 2.2 Duratorq TDCi
tolsen is offline  
Reply

Tags
abs , laguna , lights , warning , working

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Renault Forums :: Independent Renault forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome