Central Electric Module
#1
Central Electric Module
I bought a 2004 s40 1.9 . The left headlight low beam is inop. The previous owner thought it was the housing so they got an extra headlight housing. I testes the voltage going in and got .4v-5v. Tested the power from the fuse to the CEM and got batt v. Continuity from CEM was .01 ohms. I have narrowed it down to the power side of the relay within the CEM. Passenger lights and highbeams work just fine. I am considering splicing the left and right headlights together and upping the fuse by 5 to handle the increased current. I can use ohms law to estimate the current flow but bulb R can change with heat. I am just trying to pass inspection for now until I can find another CEM. If the new to me CEM is installed, must it be programmed?
#2
on the S40 1/9s the CEM does not need to be programmed. You will find it under the drivers side dash just above the hood release. You can probably get by with a used unit - I found one for $65 and its worked fine since.
not sure why the P/O got a whole new headlight housing - if there's an issue its with the connector to the bulb - the bucket itself is all plastic.
not sure why the P/O got a whole new headlight housing - if there's an issue its with the connector to the bulb - the bucket itself is all plastic.
#3
Thank you, ive found, tested and disassembled it to see if the relays were serviceable. I found that they were not so ive been looking for new ones in scrapyards but I cant find a 2000-2004. Found a few on ebay but hated waiting. I then saw ads to reprogram them and wasnt sure if that was required for this year.
#4
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