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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 10-01-2015, 04:47 PM   #1
kevro
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Join Date: Jan 2009
Location: Tempe, Az
Posts: 196
My Ride: e36,e36,325it.
need some help on wiring...i think s54 touring swap

i dont know exactly how to explain the issue. the dme is not powering down when i remove the key. here is what i have figured out so far.

vehicle 1. 2001 325xit - water damaged engine was removed. s54 was put in its place. car runs perfectly. only wiring was done to ews and clutch switch. coding removed ews function anyway.

vehicle number 2 (mostly for testing purposes) bone stock 2001 325it. standard transmission.

here is the issue. in vehicle 1. neither of the s54 dme (i have two) are properly signaling the dme relay to cut power. however, if i put the working 325it dme into vegicle 1, it does this exactly as it should.

heres where it gets extra confusing. if i put the s54 dme into vehicle number 2, they both work exactly as they should. obviously i am not strarting vehicle with the s54 dme but it powers on, triggers the relay and when i remove key it triggers the relay to power off.


help
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Touring owners, Koni owners. BMW owners........ Tired of taking your trunk apart to remove rear shocks????
http://forum.e46fanatics.com/showthr...3#post16736763

thinking about buying an EONON unit? think twice.

http://forum.e46fanatics.com/showthr...8#post16425288

Last edited by kevro; 10-01-2015 at 05:25 PM.
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Old 10-01-2015, 07:32 PM   #2
kevro
Registered User
 
Join Date: Jan 2009
Location: Tempe, Az
Posts: 196
My Ride: e36,e36,325it.
and i swapped out the blue relay for a known good one. no change.

another odd tidbit.
if i turn car on, turn car off. the blue relay is remaining powered when it shouldnt be. if i remove it and replace it a couple times. then leave it in place it will turn off like it is supposed to. i can do this a minute after turning off car or 3 days after turning off car.
__________________
Touring owners, Koni owners. BMW owners........ Tired of taking your trunk apart to remove rear shocks????
http://forum.e46fanatics.com/showthr...3#post16736763

thinking about buying an EONON unit? think twice.

http://forum.e46fanatics.com/showthr...8#post16425288
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Old 10-01-2015, 08:09 PM   #3
kevro
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Join Date: Jan 2009
Location: Tempe, Az
Posts: 196
My Ride: e36,e36,325it.
correction. if i disconnect the relay one time and plug it back in. it is powered immediately after i replug it in and it cuts power to the dme as it should 10 seconds later. if i dont remove and replace it will keep sending power to the dme indefinitely
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