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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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CEM Wiring/Repair InformationViews : 220197 Replies : 357Users Viewing This Thread : |
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Jan 7th, 2013, 22:20 | #121 |
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Hello mr gatos
I have a 2001 s40 (with fogs) and am pretty sure it needs a new CEM to fix the headlight relay problem. I already checked the bulbs and fuses. There are some (CEMs) on ebay but I am reluctant to take a chance on these - I wonder to you have any more for sale which will work with the fogs? |
Jan 7th, 2013, 22:36 | #122 |
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Have you checked the voltage across the headlights? Do you get 12V?
Can you let me know what the part number on it is. You most probably have the 30621305. I can program/enable/disable different things and test the CEMs on my car to make sure everything works
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Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba
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Jan 7th, 2013, 23:35 | #123 |
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Thank you for replying
No, read a few threads here and in various other places an formed the view it was the CEM. I don't have the expertise or equipment to check the voltage I was driving along one evening - lights working ok then switched to headlights and back low beams and they were gone I will check the part number tomorrow evening It seemed worth the few euro to chance replacing the CEM? |
Jan 7th, 2013, 23:51 | #124 | |
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Quote:
If however you don't get any voltage readings, then it could be something as simple as a fuse, or worse case scenario a sorting of the loom under the radiator. Also it would be a good investment to get a cheap multimeter as they do come handy. And if you don't know how to use it, there are plenty of video guides on youtube. £2.99 for a cheapy one http://www.ebay.co.uk/itm/DIGITAL-MU...item256cad5ea5 and there are many others at £5, £10 or £20.
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Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba
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Jan 15th, 2013, 21:13 | #125 |
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This a really informative thread.
I bought an '03 V40 three weeks ago, but havenever got full beams to work. Not the fuses or the bulbs and both sides have failed. When I pull the lever to go to full beams I here a click which I thought was probably the relay (?) When the lights are set to sides or drls I can flash the full beams though which seems strange. Interestingly, the garage which serviced the vehicle for the previous owner says they have put in a new CEM. Any thoughts? Bob |
Jan 15th, 2013, 23:34 | #126 |
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Most probably they used an older CEM.
I think your car should come with the CEM with part number 30638708. If you look under your drivers footwell, you will find out that you most probably have either the 30621305 or 30896698 fitted on your car now
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Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba
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Jan 20th, 2013, 12:03 | #127 |
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Hi Gatos,
I checked the part this morning and it does have number 30638708. Is there any possibility that it should be one of the others? Alternatively, is it possible that it's a relay? I hear the relay clicking away. Cheers Bob |
Jan 20th, 2013, 12:57 | #128 |
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These are the various part numbers for the CEM:
Control unit [-2001, L.H.D (30859699)] 30896697 Electronics box [2002-, L.H.D (30621304)] 30638707 Control unit [-2001, R.H.D (30859700)] 30896698 Electronics box [CH 800000-026445, R.H.D] 30621305 Electronics box [CH 026446-, R.H.D] 30638708 By checking your chassis number (last 6 digits on your VIN) you should be able to find out which CEM your car should have. What part number is the CEM you have? The relevant relays are actually inside the CEM
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Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba
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Jan 20th, 2013, 13:00 | #129 | |
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Jan 20th, 2013, 16:58 | #130 |
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9####5 is the last 6 digits ln the chassis/vin and the part number of the CEM is 30638708.
Thanks for all your assistance. Bob Last edited by kirkwallcity; Jan 20th, 2013 at 17:45. |
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