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Module 3 'ESP' 2 Codes
C1100 LF Speed Sensor Open Circuit in Wiring
C1101 RF Speed Sensor Open Circuit in Wiring

Module 8 'BAS' 1 Code
C1025-003 - Fault in CAN communication with N47-7 ABS Control Module
Here is list of codes and remedies. For time being lets call C1025 a glitch.

C1100. Run tests 9.0 and 9.1

C1101. Test 10.0 and 10.1

C1103. Test 12.0 and 12.1

For each test numbers in parenthesis correspond to pin numbers in connector 2 of module N47-5.
 

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2000 E 320 Wagon + 2002 ML 500 SUV
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Discussion Starter #42 (Edited)
Great info there Witek, & guys thank you !

I examined the wire harness closely.

Near ABS pump connection, it looked good & not chafed / abraded.

BUT, Under fender there's a body cavity with sharp edge & entire harness drapes over it & down behind headlamp & up towards ESP/BAS unit.

MB put a mesh abrasion cover over wires there but the weight of the harness is pronounced & makes almost a 90 degree bend over the edge.

Most likely spot for a broken wire ?

That place needed a hole & big grommet or conduit....but didn't get it.

I did look behind inner fender liner / frame rail but in my ML harness was not rubbing there at all.

I'm wide open to any wire repair / solder tips you have

Thx - David
 

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Discussion Starter #43
Khomer2's video is for a 2003-2005 w163 with 47 terminals and N47-5 bolted directly to abs pump, 2002 is different style with N47 in F1 fusebox.
Thanks for the clarification !
The broken wire(s) I most likely have are in the harness running to the ESP/BAS module mounted in rear of my 2002's Relay Box - not on the ABS pump like later ML's.

(I think this is why confusion exists over which module is called what - one must ask 'which year w163 ?')

Cheers - David
 

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Discussion Starter #44
Witek, Deplore, Khomer, Kustom,

Have been studying wire test print outs.

Q: on 9.0 (for example) it all makes sense except:

77 --( )-- 78

What's that mean ?

I will report back measurements soon.

Thx a lot - David
 

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Outstanding Contributor , SDS Guru
1998 MB E300TD, 1997 MB E36 AMG, 2001 MB E55 AMG
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Which one?

Personally I think ESP module might be bad. Swap with a known good unit if you have one.

Try the one from W210, and read the codes and see what it says.
 

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Discussion Starter #46
Also, test ohm range is 0.8 - 2.3k ohm for Front VSS.

So, thats below 1 ohm to 2,300 ?

My test meter has ohm settings for:
200
2,000
20,000

Which to use ?

Electrical newbie here... sorry.

David
 

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Witek, Deplore, Khomer, Kustom,

Have been studying wire test print outs.

Q: on 9.0 (for example) it all makes sense except:

77 --( )-- 78

What's that mean ?

I will report back measurements soon.

Thx a lot - David
Good Q,
It's not on the connector layout.
Just a hunch, but does it apply then? ....if it's not on this connector layout for the 2002 ML500.

??
Somewhat like going thru the EPCs for parts ?, there are components listed with the item # on the diagrams, but no actual item # in the list with the part # (meaning, its not for that vin# specific model vehicle).
 

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Discussion Starter #48
Which one?

Personally I think ESP module might be bad. Swap with a known good unit if you have one.

Try the one from W210, and read the codes and see what it says.
Really, you think the same PN BAS/ESP module is in w210 wagon ?

That's a crazy convenient possibility.

Same location ? (Im not near car now)
 

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Also, test ohm range is 0.8 - 2.3k ohm for Front VSS.

So, thats below 1 ohm to 2,300 ?

My test meter has ohm settings for:
200
2,000
20,000

Which to use ?

Electrical newbie here... sorry.

David
The 2000 range. When you fiddle with the dial, you'll see how it changes.
 

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Discussion Starter #50
Good Q,
It's not on the connector layout.
Just a hunch, but does it apply then? ....if it's not on this connector layout....

Khomer:

In Witeks post 41 he listed 3 links.

The 2 or 3rd links go to the WIS (?) Section 10.4 Electronic Stability Program - TEST.
I printed that out using Printer Friendly icon & it shows that in the column labeled "Test Connection"
2642965
IMG_20200719_172119.jpg


Ill try to post a picture...
 

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David,
Yes, in reference to your printouts in post#50, I was looking at that on the Star Tekinfo (online) that Witek kindly provided. At the bottom of the page, it has the N47-5 connector layout and it's pin #s. So where are pins 77, 78 on the connector layout (N47-5)?, as the example
 

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Witek, Deplore, Khomer, Kustom,

Have been studying wire test print outs.

Q: on 9.0 (for example) it all makes sense except:

77 --( )-- 78

What's that mean ?
In means that you connect ohm meter between pins 77 and 78 of brake-out box 129 589 00 21 00 connected with cable 140 589 45 63 00. I know you don't have those.
Test 9.0 for code C1100 shows two number sets in parenthesis. 2.43 and 2.44. Using back probes inserted in the back of connector 2 (large one) measure between pins 43 and 44.

2020-07-19_174206.png
 

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1998 MB E300TD, 1997 MB E36 AMG, 2001 MB E55 AMG
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Really, you think the same PN BAS/ESP module is in w210 wagon ?

That's a crazy convenient possibility.

Same location ? (Im not near car now)
It's not the same, different PN, different programming, you will get lots of error codes including C1511 for coding incorrect. You WILL get CEL, you WILL get all sort of lights on the cluster, nothing will work properly. That's not the point of this exercise.

The point is that once you install the w210 ESP module into 163, connect scanner and monitor live data on wheel speed as you drive....does it now report the wheel speed correctly? Does the speedometer work?

If it does, then that's a pretty conclusive test that the 163 ESP has gone kaput and you're better off swapping the ESP from a 163.

I mention this because both ESP from both cars have the same software, same connector, same everything...except difference in coding.

The only wrinkle in this whole thing is your W210 is right on the MY of pre-facelift and post facelift. Technically your 2000 wagon is facelift, since it has all facelift stuff, but the actual electronics, ECU, ESP, TCM are a mismatch of both pre-facelift and post facelift. I would not be surprised at all if you have the updated TCM, but prefacelift ECU, but old BAS, but updated ABS module.

W210 MY 2000 is a mess, depending on production date. So the ESP module might be on the old pre-facelift and designed to work with ME2.0/ME2.1 ECU, and thus might not work properly with ME2.8 that's in your current 2002 ML (facelift, with facelift electronics) even though the actual ESP module is exactly the same.

All in all, worth a try since you have a scanner with live data.
 
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Discussion Starter #54
Witek thx for the helpful clarification !

Deplore I'll check to see if they're the same configuration / plugs.

Swapping for a test can't hurt anything ?

I'd be in the doghouse if I disabled my DWs wagon on accident !

The VSS electrical ohm continuity test can also establish this too right ?

If VSS show good to spec then wires aren't broken = ESP/BAS module must be faulty.

Thanks - David
 

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1998 MB E300TD, 1997 MB E36 AMG, 2001 MB E55 AMG
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Shouldn't hurt anything, and I think after reinstalling the ESP module back in 210, you'll need to do the steering angle sensor calibration, and that's it. Maybe need to clear codes using that scanner, but that's it. No limp mode.
 

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Discussion Starter #56
Hey friends,

How do you suggest I get tips small enough to 'back probe' this N47-5 connector ?

Our voltmeters standard probe tips are too fat to back probe this connector.

I know not to force into front side & damage connector

Thx David
 

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Discussion Starter #58
Very nice Khomer.
I can't find locally but Amazon in 1-2 days.
Or a longish drive to Home Depot for a Klein Tools test lead set - alligator clip probes & I could attach to fine wire.. Thx David
 

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Yes use the suggested above back probe test kits. When I fixed my 2005 ML500 the female terminals in the coupler were ruined by the wrong probes by earlier owner. The 03 - 05 N47-5 module male terminals are rectangle approx. (.025" x .041") a straight pin is too large for the terminal and opens it up.
 
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