[seawind]

I'd stay away from the wired c4. I had one that failed very early on. Had to purchase a c3, which has been bulletproof.

Could you tell me where you purchased your c3 from?

Thanks everyone! It sounds like the general consensus is that the c3's are more reliable but you never know what you're going to get until it arrives.

 

[Paul600600]

Could you tell me where you purchased your c3 from?

Thanks everyone! It sounds like the general consensus is that the c3's are more reliable but you never know what you're going to get until it arrives.

I personal think the c4 is more reliable and the Ethernet communication is less troublesome. I bought the cheapest one I could find on aliexpress several years ago and the seller is gone or changed his name.
I believe the all come from the same place but I do not have any proof and could be totally wrong.
Paul

 

[jal1224]

I suggest anyone contemplating buying a C4, or C3 for that matter, join mhhauto.com, and read this thread:

http://mhhauto.com/Thread-SD-Connect-C4-avoiding-garbage

Time well spent.

 

[Ears]

All I have to say at this point is, PAUL ROCKS!!!!

 

[Hattab]

Tips for clones

Best solution for chinese made multiplexors is to change serial number by reprograming 24C02 chip. It takes 20 minutes and grant you that your software and hardware will be newer blocked. Point is that all chinese multiplexors have very few serial numbers and all this numbers are well known in MB company. You can even perform SCN online coding with proper soft. And as it was mentioned, you don't need all this scrap dell or Ibm PC's, you can use any intel based computer with proper usb2com adapter. I apologize if this info was previously mentioned, but can't reed all 87 pages. Good luck to all ?
P.S. Keep in mind that blocked brick can be unblocked for about 100$ (Cost of labor and parts) if you know good electronics engineer.

 

[Ears]

Paul, many of the signal descriptions in that document are incorrect. For example, the RST roof controller is wired to pin #21 -- not #22. Also, two are described as "enable, disable lambda sensor"; I believe these are in fact the on/off ratio signal produced by the DI ignition controllers, and they are not read by Star Diagnosis.

Do you have the correct pin-out for the 38pin socket and therefore the C3 cable? I am trying to diagnose a C3 that does not connect to the RST.
http://stardiag.net/sd-connect-cable-38-pin-pinout/
http://stardiag.net/pinout-diagnostic-connector-mercedes/

Thanks...

 

[Ears]

Do you have the correct pin-out for the 38pin socket and therefore the C3 cable? I am trying to diagnose a C3 that does not connect to the RST.
SD Connect cable 38 pin. (pinout)
Pinout of the diagnostic connector Mercedes.

Thanks...

This pic appears to indicate pin position 17, 22, and 29 are dead/not pin positions; however the website referenced above provides a named function... I gotta take a pic of the actual connector in my car. If the cables for my C3, for example, are made to this scheme, there may very well be misplaced pin designations.

 

[bobterry99]

The wiring from the sockets on one end to the cable to the pins on the other should be as follows:
.

A - 1, B - 2, C - 3, D - 4, E - 5, F - 6, G - 7, H - 8, J - 9, K - 10, L - 11, M - 12, N - 13, P - 14, R - 15, S - 16, T - 17, U - 18, V - 19, W - 20, X - 21, Y - 22, Z - 23, a - 24, b - 25, c - 26, d - 27, e - 28, f - 29, g - 30 x, h - 31, i - 32, j - 33, k - 34, m - 35, n - 36, p - 37, q - 38​

The systems associated with each socket are shown in the attachment.

 

[Ears]

Excellent! Time to dust off the ole VOM!
I suppose this configure is accurate for 1997, and other years as well.

Thanks

 

[Paul600600]

So i just looked at the diagram again X11/4 port 21 is actually the round diag connector and goes to N52 2/42 Control Module Diag port.
according to this page

Star Diagnosis C3 cable 38 pin. (pinout diagram)

it should end up on the C3 connector Port X (KAN21)
I just checked 2 known good cables and it matches up.
I try to do a complete point to point for all connections later.
But for now test from Port X (C3 side) to 21 (vehicle side)
If its ok I would say the cable is not the problem.

 

[Ears]

If I have "X" marked correctly, then my cable is Crap!

 

[bobterry99]

If I have "X" marked correctly, then my cable is Crap!

If you open-up the ends of the cable and refer to the chart in my prior post you will probably observe that sockets/pins are wired that are not used by Star Diagnosis. Unsolder one of those pairs and make a connection between X and 21.

It would be helpful to others if you identify the source of this cable.

 

[Paul600600]

If you open-up the ends of the cable and refer to the chart in my prior post you will probably observe that sockets/pins are wired that are not used by Star Diagnosis. Unsolder one of those pairs and make a connection between X and 21.

It would be helpful to others if you identify the source of this cable.

See if you can find it at all maybe it's just on the wrong pin

Sent from my SAMSUNG-SM-G870A using Tapatalk

 

[Ears]

If you open-up the ends of the cable and refer to the chart in my prior post you will probably observe that sockets/pins are wired that are not used by Star Diagnosis. Unsolder one of those pairs and make a connection between X and 21.

It would be helpful to others if you identify the source of this cable.

Identity...
https://www.aliexpress.com/item/MB-...9dfe4c720e88-0&algo_pvid=8442a1e8-dfb0-48e3-9e65-9dfe4c720e88&priceBeautifyAB=0

 

[Ears]

See if you can find it at all maybe it's just on the wrong pin

Sent from my SAMSUNG-SM-G870A using Tapatalk

for anyone interested, here is full breakdown/comparison (red "X" means no continuity on pinset...)

MUX, Port,My Cable,Function
A ,1 ,1 ,Ground: 0 volt (KI. 31)
B ,2 ,2 ,KI 87
C ,3 ,3 ,+12 voly (KI 30)
D ,4 ,4 ,EDS, DFI, IFI, HFM, LH, ME, CDI
E ,5 ,5 ,ME (Left Engine 120)
F ,6 ,6 ,ABS, ASR, ETS, ESP
G ,7 ,x EA, ISC, CC
H ,8 ,8 ,BM, BAS
J ,9 ,x ASD
K ,10 ,10 , EAG, EGS
L ,11 ,11 ,ADS
M ,12 ,x PML
N ,13 ,13 ,Not Used
P ,14 ,x Not Used
R ,15 ,15 ,KI 87
S ,16 ,16 ,AIRCO
T ,17 ,x DI
U ,18 ,x DI (Left engine 120)
V ,19 ,x DM
W ,20 ,20 ,PSE
X ,21 ,x CF/RST
Y ,22 ,x RB
Z ,23 ,x ATA
a ,24 ,x Not Used
b ,25 ,x Not Used
c ,26 ,x ASD (W 202)
d ,27 ,x Not Used
e ,28 ,x PTS
f ,29 ,x Not Used
g ,30 ,30 ,SRS (Airbag)
h ,31 ,x IRCL
i ,32 ,x Not Used
j ,33 ,33 ,Not Used
k ,34 ,x CNS
m ,35 ,35 ,Not Used
n ,36 ,x STH
p ,37 ,x Not Used
q ,38 ,20 ,Not Used

 

[bobterry99]

See if you can find it at all maybe it's just on the wrong pin

This is not the case with the two problem cables I have seen. To be clear, the cables are wired correctly. The problem is that only 16 pins are wired, and #21 for the roof/roll bar is not one of them. Also, at least 2 pins are not even used.

From the chart above it is evident that 27 wires are needed for a cable that will diagnose all models and years with the 38-socket connector. I believe a '96 and later SL only uses these pins: 1, 2, 3, 4, 5 (V-12 only), 6, 8, 9 (ASD only), 10, 11 (ADS only), 16, 21, 23, 30, 31.
.

 

[Ears]

This is not the case with the two problem cables I have seen. To be clear, the cables are wired correctly. The problem is that only 16 pins are wired, and #21 for the roof/roll bar is not one of them. Also, at least 2 pins are not even used.

From the chart above it is evident that 27 wires are needed for a cable that will diagnose all models and years with the 38-socket connector. I believe a '96 and later SL only uses these pins: 1, 2, 3, 4, 5 (V-12 only), 6, 8, 9 (ASD only), 11 (ADS only), 16, 21, 23, 30, 31.
.

What about 7, 10, and 22 (since roll bar is in controller, I understand 22 might not be needed). 7 is Throttle, cruise, idle control (EA, ISC, CC). 10 is Transmission control (EATC).

 

[bobterry99]

What about 7, 10, and 22...

Oops, I missed 10. I'll edit my post to include it. Pin 7 isn't needed, since on a '96 and newer car throttle functions are incorporated into the engine management ECU. And as you guessed 22 is incorporated in the roof controller.

 

[Ears]

Oops, I missed 10. I'll edit my post to include it. Pin 7 isn't needed, since on a '96 and newer car throttle functions are incorporated into the engine management ECU. And as you guessed 22 is incorporated in the roof controller.

Ah...
Thanks

I guess I could look at my car's port and maybe tell which have connections inside or not...

I am guessing my OBD2 cable supplied, is wired correctly as the system worked perfectly on my friends R251...

 

[Salal]

It's been almost a year since I last posted on this thread, I am looking to buy mine now in the next upcoming days. Was thinking of going for the C5 but as Paul stated and as well as others, its pretty obvious and almost all are just C4's in disguise and would be somewhat a pointless purchase.

I am having a pretty hard time finding a decent supplier of a C4 multiplexer with older software which will have HHT-WIN. The one I was looking at comes with March-2018 software with a Lenovo 200t laptop all in, which is the laptop I want for conveniance. I am currently using a Launch X431 which is quite good as it covers 80-90% of factory functions but wont be as good as SDS of course. Although, with all my mbs, a C3 would suffice as I need it for W211, W210, and W203 chassis and potentially W220/221s in the future but I rather go for the C4 SD Connect (the wifi one). Am I right to say that DAS will not work on a facelift W210 (only 38 pins) and it needs HHT-win?

If so, can I run two separate hardrives and alternate them, if and when I need HHT-win to run an older software version with the same laptop and multiplexer?

And Paul, I've heard you mention on multiple occasion that the Chinese supplied software is not the greatest, where would you recommend sourcing a decent copy from?

Thanks


this is the supplier I was currently checking out:
(If I do go for this one I will leave feedback if its any good)

https://www.aliexpress.com/item/201...e-07-2015-Get-Free-Gift/32450233691.html?spm=a2g0s.13010208.99999999.262.DdgYsc