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      11-19-2016, 03:55 PM   #1
THiBL
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Edc Control Module Position E93 M3

Hy guys ! all is in the title

Can you tell me were is this EDC control module

I read it was in the trunk but i don't find it

I have a probleme with EDC :

"rear shock absorber "

i changed the rear shock today but the problem was always here ...

I want to check the module

Thx
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      11-19-2016, 04:19 PM   #2
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TH, in E90/92 the module is behind the trim in right side trunk. What would you check on the module?

Edit: some good pics further down here: http://www.m3post.com/forums/showthread.php?t=491523

Last edited by Helmsman; 11-19-2016 at 04:32 PM..
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      11-20-2016, 07:56 AM   #3
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Im looking at this position



but it's not here on e93 ...

I want To Check if EDC module looks good

Last edited by THiBL; 11-20-2016 at 09:57 AM..
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      11-20-2016, 11:24 AM   #4
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Quote:
Originally Posted by THiBL View Post
Im looking at this position



but it's not here on e93 ...

I want To Check if EDC module looks good
No?? Then I dont know Im afraid. However for what its worth I doubt that the module will tell you anything. Ive had mine out for a swap, out of curiousity I also checked the inside on my spare. Nothing to see really shouldnt some electronics been burning which I suspect would give you a EDC error rather than specifically shock.
The two connectors to the module is also very solid, very little chance for issues here.
You can try pulling one of the front connector and drive, this should give you a EDC error and all dampers should go completely stiff i.e harder than Sport (module gets in halt mode and stop delivering any current to the shock valves that remains completey closed). Error will go away once plugged back in.
Sounds like the shock still has an issue mate. Was it a brand new you changed for?
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      11-20-2016, 01:05 PM   #5
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Im not pretty sure to understand all, but :

I take a look this afternoon and don't find the module (i just find the one for KEYLESS) i will try and made more investigations tomorrow

When i have the car she have this probleme of EDC : 5FE7 F8 and a message of probleme on the CCC

I have two shock with 10000km so i changed it and the probleme is always here.

More info to come tomorrow.

Thx
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      11-21-2016, 03:25 PM   #6
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On an E93 M3, getting to the EDC module is a pain, it is located behind the rear seat panel under the convertible top.
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      11-22-2016, 12:37 PM   #7
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Quote:
Originally Posted by THiBL View Post
On an E93 M3, getting to the EDC module is a pain, it is located behind the rear seat panel under the convertible top.
Ouch. Well its not a one minute job on the E92/90 either but Im sure you'll do alright. Again not sure what you expect to find but please keep us posted mate.
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      11-22-2016, 02:59 PM   #8
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I tried To disconnect the front shock an it change nothing

I have an idea and see on realoem the constituting item of the rear EDC and find a accelerating sensor on the diagram 37146781406

Maybe it was broken

Did you know were i can find it on the rear wheel arch ?

Thx
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      11-22-2016, 03:35 PM   #9
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Quote:
Originally Posted by THiBL View Post
I tried To disconnect the front shock an it change nothing

I have an idea and see on realoem the constituting item of the rear EDC and find a accelerating sensor on the diagram 37146781406

Maybe it was broken

Did you know were i can find it on the rear wheel arch ?

Thx
There are three acc sensors, two front and one rear (on E90 its just above the module inside right fender, not left as some documents suggest). I don't think the acc sensors location has anything to do with rear/front damper issues, the sensors simply provide body movement for the EDC module to calculate damper/valve setting on. I.e. your error saying "rear chock problem" I would guess is not coming from a sensor issue, but again this is a guess. Btw Im pretty sure you will pick up a sensor issue with a scan (you have Carly for instance?)

According to documents I've red, should a sensore go bust (there is also a steering angel sensor input), the module sets itself in "half halt" with a mid drive current output settings the dampers "half stiff". No adapting/current adjustment will occur at this stage.

Cheers
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      11-22-2016, 03:45 PM   #10
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So i find the stupid solution.

According to the error code it was a probleme with the shocks.

I changed the shocked but forget to erase the faulty code.

Now everything works good. I have to made a test drive to confirm but i let run the car for 1/2 hour, play with the switch and Mdrive mode and the error don't come back. ( i don't drive because i fix my performance rear spoiler today)

Thx for help guys

Last edited by THiBL; 11-23-2016 at 09:35 AM..
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      11-23-2016, 10:23 AM   #11
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Thx for help
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      11-23-2016, 12:54 PM   #12
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Quote:
Originally Posted by THiBL View Post
So i find the stupid solution.

According to the error code it was a probleme with the shocks.

I changed the shocked but forget to erase the faulty code.

Now everything works good. I have to made a test drive to confirm but i let run the car for 1/2 hour, play with the switch and Mdrive mode and the error don't come back. ( i don't drive because i fix my performance rear spoiler today)

Thx for help guys
Good stuff! Curious, do you feel distinct differences between the three settings? (I know its a nagg but as long as I have my issue I continue my little investigation..).

Cheers
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      11-23-2016, 01:40 PM   #13
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Quote:
Originally Posted by Helmsman View Post
Good stuff! Curious, do you feel distinct differences between the three settings? (I know its a nagg but as long as I have my issue I continue my little investigation..).

Cheers
I can't drive for the moment. I will see and test at the end of the week

I always give feedback

So see you soon
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      11-25-2016, 10:05 AM   #14
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And it come back !!!
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      11-26-2016, 04:03 AM   #15
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Quote:
Originally Posted by THiBL View Post
And it come back !!!
Sorry to hear. Did you have time to feel if it was working okay before it came back (where after I assume it goes in stiff mode)?
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      11-27-2016, 01:36 AM   #16
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If i Start the car and dont moved it, i CAN plat with the Switch, the problème came back imediatly when i moved the car.
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      11-27-2016, 05:11 AM   #17
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Quote:
Originally Posted by THiBL View Post
If i Start the car and dont moved it, i CAN plat with the Switch, the problème came back imediatly when i moved the car.
The EDC module only start to work after you start drive and pass like 3mph, before this it doesn't generate any current for the dampers (2/1.6/0.8 ampere in comfort/normal/sport). I.e. it is only at this point possible fault codes comes up.
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      11-28-2016, 03:40 AM   #18
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If i Fallow you i have Three solution :

Rear shock (i changed it so no problème)
EDC module
Wires from shock To EDC
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      11-28-2016, 07:38 AM   #19
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Quote:
Originally Posted by THiBL View Post
If i Fallow you i have Three solution :

Rear shock (i changed it so no problème)
EDC module
Wires from shock To EDC
Wish I could say mate. I have very little practical experience from the system but trying to learn since mine is acting weird.

Pulling one damper (connector) will give you a general "EDC fault" message in the iDrive soon as you start. Hence as you're message specifically stated rear damper (or was the scanned code only that told you?), I'm tempted to say it can't be a simple wire issue. No idea what the damper base an individual code, on which seems to be the case here.

Should I continue to guess, it seems strange if it is the module, would have thought you'd get a general error in that case (also the module have only two output drive stages, one per front/rear. So again if you get a message for ONE of the rears, it wouldn't make sense).

EDIT: One more thing you could test that may tell you a bit more about whether the module is gone or not; Some faults for instance sensors, apparently set the module in "half stiff" i.e. fixed output current regardless of mode somewhere between 1-2amps. This is fairly easy to measure hooking up a amp meter on one of the front connectors. Again, if you unplug a damper the module will turn off to 0 current (and generate "EDC failure"). I'm not sure how the module react to a plugged in but broken damper.
For further background here's a video I've done during my own fault tracking. As you can see its 0 current while stand still, to after a few mph start up, with 2A in comfort, 1.6A i Normal and 0.8A in Sport.

Cheers


Last edited by Helmsman; 11-29-2016 at 09:28 AM..
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      01-12-2017, 01:34 AM   #20
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So :

I changed rear shock
I changed the control modul

and ... it doesnt work

Does anyone know were the rear edc sensor are located ?

Thx
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      01-13-2017, 01:16 PM   #21
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Quote:
Originally Posted by THiBL View Post
So :

I changed rear shock
I changed the control modul

and ... it doesnt work

Does anyone know were the rear edc sensor are located ?

Thx
Assuming you refer to the accel.sensor, on the E90/E92 its the piece just above the EDC module. There are two similar in each front fenders. I don't think they correlate to front/rear damper issue, but measure the shassi movement.
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      01-21-2017, 03:23 PM   #22
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Quote:
Originally Posted by Helmsman View Post
Assuming you refer to the accel.sensor, on the E90/E92 its the piece just above the EDC module. There are two similar in each front fenders. I don't think they correlate to front/rear damper issue, but measure the shassi movement.
Don't find it on the e93

Have you a pics of the emplacement in the e92

I Heard about it on the rear arch ...

BMW dealer don't find the problème and I don't find it too it's a f...ing trouble
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