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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 : 220353 Replies : 357Users Viewing This Thread : |
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#42 |
Experienced Member
Last Online: Today 11:57
Join Date: Jun 2007
Location: L/H side
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Sorry , you cant on the early one without cutting wires , after 2000 its simple and in the handbook ..
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#43 |
New Member
Last Online: Apr 30th, 2011 16:35
Join Date: Apr 2011
Location: Madrid
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This information has been really useful! I have a V40 2.0T yr 2000 and in the shop they just said one of the two pairs of rear position lights (sorry about my Spanglish!) is not working. They claim this is due to the CEM, and of course offer me a nice replacement for 522 Euros! Do you know if there is also a relay in this CEM that controls those rear lights (there is one pair of lights on the trunk door and another pair on the main body of the car). Thanks!
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#44 |
Winegrover
Last Online: Jul 17th, 2019 11:08
Join Date: Nov 2009
Location: Slovenska Bistrica
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Yes, inside CEM are two (2) relays for position lights.
-One is for inner (on trunk door) and for licence plate illumination. -One for outer (on car body) and for front position lights (inside headlamp). But first, check all the fuses, and a cable between trunk door and body. Due to a trunk door open and close, this cable can often break. |
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#45 |
New Member
Last Online: May 10th, 2011 23:40
Join Date: May 2011
Location: rj
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which the value of R47, R49, R11 and R122?
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#46 |
New Member
Last Online: Jun 23rd, 2011 18:20
Join Date: Jun 2011
Location: Arvada
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Hey, Russel,
thanks for the critical info. even with my background of 30 years in electrical, instrumentation, and electronics, it was really difficult to troubleshoot a system whose engineers are information anal. i hope this doesn't break forum rules re language. i am new to forums. I have replaced engine and trans on my daughters 2000 s40, and have been appalled at the info access difficulties. Thanks again ps, re protocols, are the couple of capital letters I put in for emphasis considered bad form? also, is there a way to contribute $$ to forum support? It of course is much cheaper than Vadis subscription, or buying even more bogus Vadis copies! lol :-) |
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#47 | |
New Member
Last Online: Jun 23rd, 2011 18:20
Join Date: Jun 2011
Location: Arvada
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![]() Quote:
would be glad to pay for info, I have scoured the fujitsu database with no replacement relays compatible. no prob if just a relay base, but modifying the volvo cem prob not good idea. have you found replacement from any source? |
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#48 |
Premier Member
Last Online: Nov 15th, 2022 21:34
Join Date: Apr 2010
Location: London / Essex
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The idea of forums is generally to share knowledge for free. Payment would only be considered in cases where actual car parts are sold or sometimes when someone helps someone else to repair something (in most cases it's free too). The best way to pay back here is to offer your brains and ideas here so everyone else can benefit.....
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Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba
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The Following 2 Users Say Thank You to gatos For This Useful Post: |
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#49 |
New Member
Last Online: Jul 1st, 2011 12:08
Join Date: Jun 2011
Location: Nykøbing Falster
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Hey
Does anyone have the schematic for the cem? or knows what component there is on place DA13 and DA12? Mine has fallen off.... and I have to replace the components.. Kim |
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#50 |
Winegrover
Last Online: Jul 17th, 2019 11:08
Join Date: Nov 2009
Location: Slovenska Bistrica
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My wild guess - it might be a double diode with common anode? Do you still have it lying inside housing?
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