E-Class (W210) 1995-2002: E 200, E 220D, E 240, E 290TD, E 300TD, E 200, E 240, E 280, E 320, E 420, E 430 (Wagon, Touring, 4Matic)

E420 loosen ecm wire

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Old 02-18-2014, 12:05 PM
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w210 e420 -96
E420 loosen ecm wire

Hello..

I would need some kind of wiring diagram for that ecm wiring connector, because i have no idea where this wire is from. And im not even sure was it on loose already or did i accidentially pulled it off when i took ecm off.

Wire is red with green stripe.

E420 loosen ecm wire-j45zpnp.jpg


Thanks already, and sorry for my bad english.. mine native language is finnish.
Old 02-18-2014, 06:49 PM
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1999 E300TD
Not to worry I know only one word of Finnish-----Kossu

The photo has its shortcomming---what color(s) is the wire????
Old 02-19-2014, 05:53 AM
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w210 e420 -96
Yeah, that sure is a good word.

That wire is red with green stripe. I opened that connector to ecm, but i couldn't find out where is it from.
Old 02-19-2014, 12:13 PM
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1999 E300TD
I should have requested the VIN because I don't know what engine number you have and that would impact the ECU wiring---however I could have gotten lucky!!

In any event the only rt/gn wire is at connector number 44------at number 48 the wire should be gn and at position 49 the wire color is sw--(all wire colors are in German)!!

Look at the connector for those colors of wire and hopefully there is a space for the wire you need to reattach------however be careful--the unattached wire does not have a connector therefore you just cant push the wire in and hope it will hold---you have to remove the old---resolder and reattach.

With all this said I would like to recheck using your VIN---please send!!!
Old 02-19-2014, 03:16 PM
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w210 e420 -96
Ok, WDB2102721A262905.

I'm able to look for those wires only in next weekend, because I'm not home right now.

But last time I did check that big connector and I didn't noticed any pins without wire.. On the other hand, I'm not 100% sure. It surely would be alot easier knowing the right pinout.
Old 02-19-2014, 04:12 PM
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The VIN matched my guess(119.985)

44 rt/gn,48 gn and 53 bn/ws are the three wires from the acceleration sensor,the input data is used by the ECU.---with that info you should now be able to find the missing connection.

FYI: I could not find a drawing dedicated to the 119.985 ECU pin out.
Old 02-19-2014, 05:10 PM
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w210 e420 -96
I have to check that as soon as I can.. Thanks alot!

I'll reply when there's some progress.


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Old 02-20-2014, 03:25 PM
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w210 e420 -96
Just get to my car and looked that connector, but..

No. 48 = white
No. 49 = black
No. 53 = brown/white
No. 40 = 2 green wires

So, should i put that rd/gr to no. 44 or what? There is no connector for that wire..
Old 02-20-2014, 04:45 PM
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I can confirm 49,53 and 40----however on the drawing for your car, position 48 is showing (gn)=green----why the difference---I can only speculate and I will not!!

FYI, the wire has to have a connector(pin or blade) for the data to flow to the ECU---are there any positions that have a connector but no wire???
Old 02-21-2014, 04:06 AM
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w210 e420 -96
Nope, i have looked already for a connector without a wire but no luck.

Maybe there is a reason why its loose? I dunno...


Originally Posted by Plutoe
I can confirm 49,53 and 40----however on the drawing for your car, position 48 is showing (gn)=green----why the difference---I can only speculate and I will not!!

FYI, the wire has to have a connector(pin or blade) for the data to flow to the ECU---are there any positions that have a connector but no wire???
Old 02-21-2014, 01:35 PM
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Regarding connection terminology, I may have added to the conundrum---Most ECU's have the male pins and therefore the connectors will be female.

When you looked at the connector---were there any metal in 44 compared to the others that you indicated were absent of metal??

Regarding another location for the wire----the length of the wire should help in determining that---although the photo is fuzzy it seems the wire is apart of the group of wires that go to the ECU.

Have you started the car??----did you get a CEL?? and if so what was the fault number??

PS: Congratulations on winning the Bronze Hockey Medal!!!

Last edited by Plutoe; 02-22-2014 at 12:25 PM. Reason: Great hockey team
Old 02-22-2014, 02:19 PM
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w210 e420 -96
Nope, no any metal in connector.. and yes, that wire comes from same wiregroup to ecu.
My car wont start.. it cranks but just wont start. Somekind of immobiliser problem.
But i have ordered new key and probably will work after that - i hope.

If i recall, error code was p1570. Something of ifz.
Old 02-22-2014, 03:25 PM
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You guys are very good at hocky---a Bronze medal-----in any event P1570=start authorization from the DAS not granted!!

Reasons=ECU and ignition control module do not match and or start message from ignition module to ECU damaged--

Sounds fishy-----any body been fooooken around with the ECU!!
Old 02-25-2014, 05:19 AM
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w210 e420 -96
I guess hockey is pretty popular in Finland and that's why we have so good players too.
Bronze is really good, but gold would have been alot better.. heh.


Actually my car hasn't been running since last october. I had my engine off and worked with some rust. So there might be just some wire loose or something.. i dunno.

But before that it worked like a charm.
Old 03-01-2014, 09:23 AM
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w210 e420 -96
I received new key fob and surprise surprise.. key wont turn. Key was right, but lock cylinder not. So i swapped old key to new remote and tried to start - nope, it wont start. Same thing, same fault code(s).

And now even the remote lock wont work if I push button from key fob.. there is no red or green light.

Damn, this thing is driving me crazy.

I have attached those fault codes what carsoft gave.. hope it will give at least somekind of clue.
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diagnosis.txt (5.1 KB, 531 views)
Old 03-01-2014, 11:22 AM
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1999 E300TD
The reason why the car won't start is because the key does not atch in ignition switch and I bet that the VIN stored in the ECU does not match the proper VIN for the car---you are screwed blued and tatooed as they say plus you have wasted all that money for nothing.

There are so many errors I do not know where to begin but-------time to tell us the complete story about this car!!! Who changed the ECU??? Why a new key??? Is the key from a dealer or a Russian???
Old 03-01-2014, 11:59 AM
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w210 e420 -96
Talking

Well it's not long story, i bought this car in last august from private seller. Then i drive it for a month and took the engine off to repair all those rusty spots.

And now the situation is that i have finally managed to get engine to it's rightfull place but it wont start.. it cranks but will not fire.

Car's history is mystery to me.

New key is real deal from dealer, straight from German. And i only bought it because I only had one key.

I wouldn't count for all those fault codes, it's not star diagnosis.. just a crappu carsoft.
Old 03-01-2014, 12:00 PM
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w210 e420 -96
Oh, and I dont know if the ecu is changed or if it is - who did it.
Old 02-05-2017, 12:20 AM
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!997 mercedes benz E420
e420 1997 control module wire loose

color red & yellow wire is loose, Can someone help me where this wire should be? it is the same color on Number 2 wire?
Vin #wdbjf72fiva304726



Mr Mpaavi, Do u still have your car? We have the same problem but different wire color I can help u since my module wiring harness is also open!!
Attached Thumbnails E420 loosen ecm wire-e420-1.jpg   E420 loosen ecm wire-e420-3.bmp  

Last edited by jguico44; 02-05-2017 at 12:23 AM.
Old 11-15-2018, 10:31 AM
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W140 W210 W220 C140
Originally Posted by jguico44
color red & yellow wire is loose, Can someone help me where this wire should be? it is the same color on Number 2 wire?
Vin #wdbjf72fiva304726



Mr Mpaavi, Do u still have your car? We have the same problem but different wire color I can help u since my module wiring harness is also open!!
hey.....please help me with some pictures of that connector and I will make clear pictures for you.....im also missing the place for the red green wire my email adress is tm86vld@yahoo.com ...please help me.thanks a million
Old 04-07-2019, 09:05 AM
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Benz e420 w210
Help please

Please did you manage to find where that wire goes, I have the same as yours and I'm puzzled as well. Thank you

Originally Posted by mpaavi
Hello..

I would need some kind of wiring diagram for that ecm wiring connector, because i have no idea where this wire is from. And im not even sure was it on loose already or did i accidentially pulled it off when i took ecm off.

Wire is red with green stripe.




Thanks already, and sorry for my bad english.. mine native language is finnish.
Old 04-07-2019, 07:07 PM
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Just to be sure post your VIN and I will look at the wiring diagram!!

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