|
S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
Information |
|
CEM Wiring/Repair InformationViews : 220143 Replies : 357Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Sep 15th, 2011, 16:42 | #61 |
New Member
Last Online: Sep 15th, 2011 16:42
Join Date: Sep 2011
Location: winchester
|
Thanks to all of you who have posted on this site.
Had the same cem problem on my mate's s40. Bought a relay at RS for a couple of quid, removed the old one from the pcb and soldered in the new one. Lights now all work as good as new and without the horrible expense. I'm not great with a soldering iron but managed to do this ok by taking a bit of time and going at it gently. No-one should be put off from giving it a go. Once again Thanks. Pete. |
The Following User Says Thank You to 71impala For This Useful Post: |
Oct 11th, 2011, 20:54 | #62 | |
New Member
Last Online: Oct 13th, 2011 12:13
Join Date: Oct 2011
Location: Norwich
|
CEM Headlight relay
Quote:
Thanks for this detail on the CEM. Headlight relays for Fujitsu are now obsolete but Farnell were able to supply a replacement JSM-12-5 which is an exact fit rated at 15A cost £2 to £3 pounds (downside is Farnell have a minumum order of £20) excellent delivery. A fairly easy procedure to replace provided you have a soldering iron and a solder sucker. regards Buzz |
|
Oct 17th, 2011, 17:20 | #63 |
New Member
Last Online: Nov 1st, 2011 20:31
Join Date: Oct 2011
Location: Virginia
|
Thanks. Great info.
I'm located in the states and have the US version, but the same info applies. I also had the problem where the RH dipped beam quit working. I looked up the datasheet for the relay, and was able to "fix" the problem by soldering a jumper wire across the output pins of the two relays, so that now one of the relays (the still working one) controls both of the dipped beams. If you look at the relay pins on the board, you will see that there are 5 pins on each. 3 with large solder pads, and 2 with smaller pads. I soldered my bridge wire to the one large pad that is located between the two smaller pads on each dipped bean relay. This is the common pin, which (somewhat counterintuitively) is used as the output in this case. The relays appear to come in 10A and 15A versions. I don't know which is installed on the CEM from the factory. I figure that even if it's the 10A version I am not exceeding the specification by having it drive both bulbs. 55W @ 12V == 4.583A each, or 9.16A for both. I may still order a replacement relay. I think it's this one (for the 15A version): http://search.digikey.com/scripts/Dk...rds=JSM1-12V-5 |
Oct 17th, 2011, 19:33 | #64 |
Winegrover
Last Online: Jul 17th, 2019 11:08
Join Date: Nov 2009
Location: Slovenska Bistrica
|
That is a nice fix, but only for temporary time, if you ask me. The "problem" is that you have one relay for each side, and also one fuse for each relay and light. If you see inside fusebox in engine compartment, you will see two 15 Amp fuses, one for LH and one for RH side. This is done for a safety reason on every car and it is obligatory for every car on earth. Just in case something goes wrong anywhere, and one fuse pops, you will still be left with another light working.
High beams do not need this, and can be wired together on one fuse and/or relay. My suggestion is, that you buy replacement relay from Farnell or other store, and replace it. |
Nov 1st, 2011, 20:31 | #65 |
New Member
Last Online: Nov 1st, 2011 20:31
Join Date: Oct 2011
Location: Virginia
|
Well it looks like that indeed turned out to be true. My "fix" lasted about 3 days, and then the remaining relay gave out.
I ordered replacement relays from digikey and soldered them in. They were an exact fit, and the lights work normally again now. My 30-watt iron seemed a bit underpowered for the job. If I were to do it again I would prefer a 40-watt or higher. |
Dec 2nd, 2011, 12:05 | #66 |
New Member
Last Online: Dec 2nd, 2011 12:05
Join Date: Dec 2011
Location: Essex
|
Thanks for the info
Hi further to the above diagrams & info, does anyone know if the relays for the headlights (current N/S) are replacable, and how easy is it. I have seen someone post a email address for a supplier, but would like to know the theory behind changingone, before I try.
Thanks for your time. Darren |
Dec 23rd, 2011, 17:01 | #67 |
New Volvo Driver
Last Online: Jan 24th, 2012 21:43
Join Date: Jul 2010
Location: Eastbourne, East Sussex
|
I'd just like to thank those who have posted such useful information on this thread. Both mine headlights were turning on and off randomly, 2 new relays from RS and about an hour to desolder, remove and replace the relays and all is back to normal!
__________________
2002 Volvo V40 S 1.9D in Silver...100% standard! |
The Following User Says Thank You to Gizmo_V40 For This Useful Post: |
Jan 4th, 2012, 09:42 | #68 |
Master Member
Last Online: Dec 30th, 2018 08:33
Join Date: Oct 2010
Location: Craigavon area
|
1. Are all phase 2 main beam relays the same spec?
2. Could somebody post a link to ebay or other place where I could get them? I tried to search that Farnell site for those replacement relays but no success ...
__________________
Useful threads and information Guide: How to change/adjust timing belt Guide: Fitting LED's This is how S40 1.9 TD engine components looks like Information regarding EGR, problems and solutions A.K.A. Hesitation, sluggishness etc. |
Jan 18th, 2012, 19:47 | #69 | |
New Member
Last Online: Feb 5th, 2012 19:04
Join Date: Jan 2012
Location: frizington
|
Quote:
|
|
Jan 19th, 2012, 14:18 | #70 |
New Member
Last Online: Jan 20th, 2012 12:58
Join Date: Jan 2012
Location: Zagreb
|
Hello, I'm new here.
I am having a problem with my s60 '03 2.4 Black Edition. Sometimes during the driving lights on control board goes off, HL goes off and, if I am not happy, the door were locked so going out of the car becomes PIA. Volvo service told me that is a faulty CEM and they charge cca. 1300€ for replacement. Does anyone here knows where is the CEM located on S60 - maybe I can try to look at relays - because when those things happens -I can always hear the sounds of relays clicking? Thx. |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|