Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

ECC issues - blinking REC & A/C, control unit smells fried

  #21  
Old 06-08-2009, 08:26 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default

Hopefully you can read it all. This is the best I can do.
Name:  6-8-200990112PM.jpg
Views: 1488
Size:  153.7 KB
Name:  6-8-200990037PM.jpg
Views: 1467
Size:  144.0 KB
Name:  6-8-200990021PM.jpg
Views: 1469
Size:  210.4 KB

I thought I had one with pics but cannot find it sorry.
 
  #22  
Old 06-09-2009, 07:22 AM
Luke93 850's Avatar
Junior Member
Thread Starter
Join Date: Jun 2009
Posts: 16
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks Tech. From my reading of the service bulletin, I only need to follow the instructions at section C. This seems to suggest to me that it is as simple as removing the cable at position 1 and joining it to the cable at position 2. Have I missed something? Also, could you confirm that connector 24/11 is the smallest of the 3 connectors to the ECC unit?

Also, do you know why the SB says not to twist the wires together? I think this is exactly what I would have done... Is it just to sell more crimp and cable terminals or is there a legitimate reason?

Thanks again for your effort in helping me.

Luke
 
  #23  
Old 06-09-2009, 08:32 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default

I will check on the plug.
I think it is to make sure there is a good connection to make sure nothing happens.
 
  #24  
Old 06-09-2009, 08:49 PM
850tony's Avatar
Senior Member
Join Date: May 2009
Location: wisconsin
Posts: 787
Likes: 0
Received 0 Likes on 0 Posts
Default

if you twist the cable you shorten just those wires and it will pull on the twist alot because the other ones will be much longer.
 
  #25  
Old 06-11-2009, 07:16 PM
Luke93 850's Avatar
Junior Member
Thread Starter
Join Date: Jun 2009
Posts: 16
Likes: 0
Received 0 Likes on 0 Posts
Default

It appears I misread/misunderstood the technical service bulletin. I actually need to follow the instructions under section A as it is the 'control module' that I am updating and not the 'climate unit'. I think I need to get my hands on the complete technical service bulletin with diagrams before I attempt to modify the vehicle's wiring. I need to be sure I am modifying the right cables and connectors etc.

Having taken the two control modules apart, the main difference in circuitry appears to be the the section of my old unit that got fried. So that is encouraging.

Thanks for all your assistance thus far. My problem has been resolved for the most part.
 
  #26  
Old 06-11-2009, 10:42 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default

I will try to find one with pics for you but might take a little time. I will be away all weekend.
 
  #27  
Old 06-12-2009, 01:41 AM
Luke93 850's Avatar
Junior Member
Thread Starter
Join Date: Jun 2009
Posts: 16
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks Tech. It doesn't look like the modifications are likely to beyond my reach, so I would be interested in any further clarification you could provide. No rush though.

Have a good weekend!
 
  #28  
Old 06-15-2009, 07:00 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default

I am still looking.
 
  #29  
Old 06-15-2009, 07:48 PM
Luke93 850's Avatar
Junior Member
Thread Starter
Join Date: Jun 2009
Posts: 16
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks Tech. I think I understand what has to happen. My main issue is locating the connectors, in particular connector 24/1 at the left A-post. For me I am guessing it would be the right A-post as it is a right hand drive vehicle. Certainly, my fan motor cover is on the left side (rather than right). Can you give any further details on locating connector 24/1? If so, I may be able to do it without the diagrams.
 
  #30  
Old 06-15-2009, 08:46 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default

I will try to find the print outs tomorrow.
 
  #31  
Old 06-23-2009, 05:48 AM
Luke93 850's Avatar
Junior Member
Thread Starter
Join Date: Jun 2009
Posts: 16
Likes: 0
Received 0 Likes on 0 Posts
Default

Hi Tech, any luck with the print outs? Also, any ideas whether the instructions would be different for a right hand drive car?

Thanks.
 
  #32  
Old 06-25-2009, 07:16 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default

Sorry still trying been so busy at work and home that's why I have not been on since Sunday.
 
  #33  
Old 07-12-2009, 09:07 PM
Luke93 850's Avatar
Junior Member
Thread Starter
Join Date: Jun 2009
Posts: 16
Likes: 0
Received 0 Likes on 0 Posts
Default

Still no luck Tech? Thanks for your effort anyway.
 
  #34  
Old 07-14-2009, 07:16 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default

No sorry been trying to get the diagram but the people at Volvo are not helping very much but I am still looking through my Big stack of papers.
 
  #35  
Old 07-27-2011, 11:26 AM
Join Date: May 2011
Posts: 45
Likes: 0
Received 0 Likes on 0 Posts
Default

i know this post is old, but have you found/ do you have those pictures on hand? thank you.
 
  #36  
Old 08-02-2011, 08:28 PM
danfleming72's Avatar
Junior Member
Join Date: Jul 2008
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Default

Where is a good source for a replacement ECC for a 95 850 T5-R?
 
  #37  
Old 08-02-2011, 10:35 PM
danfleming72's Avatar
Junior Member
Join Date: Jul 2008
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Default Ecc

Where can I geta replacement ECC for a 95 850 T5-R?
 
  #38  
Old 08-03-2011, 07:22 AM
Join Date: May 2011
Posts: 45
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by danfleming72
Where can I geta replacement ECC for a 95 850 T5-R?
you can find one on ebay
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
kapka42
Volvo 850
7
12-26-2011 11:11 AM
mtneyman
Volvo 850
23
08-04-2010 03:46 AM
vetalbig
Volvo 850
7
05-11-2008 06:10 PM
SS760TI
Volvo 260, 760 & 960
1
03-26-2007 07:26 PM
ludeless
Volvo 850
1
01-11-2006 11:20 PM


Thread Tools
Search this Thread
Quick Reply: ECC issues - blinking REC & A/C, control unit smells fried



All times are GMT -5. The time now is 02:18 PM.