[F4ST GIXXER]

Just purchased a second hand EMPro ECU and cable for my K7 however I am having trouble connecting ECU to software on laptop. I now believe I have found the problem in that the interconnect cable may possibly be wrong.

It only connects into the SDS port however I am aware that on the K7 loom it should connect to both SDS and Yosh plugs. (Cable part number is 32930-21HR0) Would anyone have any info with regards to cable? Any help is greatly appreciated.

I have connectors available so could probably make an adapter if someone has pinouts.

Cheers,
Sean

 

[kwaka10r]

I believe it does for a stock ECM (ECU). Not sure if EMPro is different.

Here is the stock ECM connections. http://www.woolichracing.com/Documents/Bike_Harness_Installation_Suzuki_Type_4.pdf

Maybe Yosh EM Pro is different. Have a look at the Yosh Japan website first for problems about communication with EM Pro and USB drivers. http://www.yoshimura-jp.com/en/products/kitparts/empro.php

 

[BillV]

The picture here suggests it uses a cable with a single connector like what you apparently have. But this suggests that you may need a different wiring harness or a harness adapter and that may be the source of your problem. Sorry I can't be of more help. If you do get it to work, I'd be interested to know if the SDS works with it.

P.S. The cable PN looks like a Suzuki rather than a Yoshimura PN but I can't find it listed anywhere. Are you sure?

P.P.S. It would be nice if the pinouts on that adapter were available as it probably creates a bit of a wiring jumble beneath the seat. That would allow you to modify the existing harness. But I'm guessing that they're not available.

 

[kwaka10r]

This may confirm BillV's second link and is further down the page on the Yoshimura Japan website link I posted.

When using stock wiring harness.

NOTE3 :IGNITION SHORT HARNESS #446-508-1000 OR #446-508-2000 IS REQUIRED.

I'm guessing the short harness accesses the extra wires to the ECM that require connection and are described in the PDF link for the stock ECM and harness from Woolich racing.

 

[BillV]

This is the 446-508-2000 part:

446-508-1000 is similar but for an immobilizer system.

It seems to tie leads from the Yosh and SDS connectors into a single connector. Don't know what the two conductor cable is about (ignition switch/disable turn signals, etc.?).

 

[F4ST GIXXER]

The one on the left looks like the beast I need. Now to try find the pin out. I have the one on the right installed as it shorts the ignition in order to remove imobilser with yosh ecu fitted.
The only thing is the SDS connector on the interface cable I have only has 3 pins connected. I will try figure out there pin numbers.
Cheers,
Sean

 

[BillV]

You can figure out some of the pinouts from the picture. The top left W/R lead is the dealer mode select from the SDS connector. The top right lead must be the O/G +12 V from the SDS connector. There must be a ground. The picture indicates that they're using the B/W ECM ground from the SDS connector. It's not shown which pin it goes to but you might be able to determine that from your connector. The top middle position appears to be something else. The Gr K-line lead is connected so it must go to either the bottom left or bottom middle position. There's also a blackish lead to the bottom right. It might be the blackish lead shown leaving the Yosh connector, which would be from pin 3(TXD1), 5(RXD1), 6(SPL), or 7(SSW). Its importance depends on whether your connector uses it. I'd quess that it's RXD1 but really don't know.

The cable seems to sell for around $21 so it might be better to buy one than to speculate about it.

P.S. A picture of the 446-508-1000 cable seems to show a W lead from the Yosh connector. Perhaps that's what runs to the top middle position.

 

[kwaka10r]

I get this for the 446-508-1000 cable which I am sure you are looking at. I'm guessing the difference is the ignition cable on the right. The Left side one looks the same. Anyway it's the one for the stock harness and the one missing from F4ST GIXXER setup so for $21 it's a cheap way out.

 

[BillV]

After looking at the pics some more it's fairly clear that all they're doing is passing the four leads from the SDS connector straight through and adding a W and a B(or is it DGr?) lead from the Yosh connector to them. So the bottom right is the B/W ground and the bottom middle is the Gr K-line. On K5/K6, a white line from pin 7 (TX) of the ECM runs to the top middle and a DGr line from pin 24 (RX) runs to the bottom right of the SDS connector. You just need to figure out what are the equivalent pins on the K7 ECM. They might be ECM pins 15 (TXD1) and 16 (RXD1) which are the Bl/Y and Bl/G leads to the Yosh connector.

At least that's what it looks like to me.

 

[T.R.E]

The right harness part "or ignition short harness" all it does is disables the lights when you turn the switch on,you can run the bike with the lights if you want to.
To remove the immobilizer you need to disconnect another black 4 pin plug,otherwise the bike won't start.

I had an EM-PRO on my bike several years ago,but I sold it to a friend. I'll contact him and let you know

 

[F4ST GIXXER]

Looking at the SDS connector on the yoshi cable it looks like only three pins are used.
T.R.E, an image of the cable would be grealty appreciated if available.
I have kit loom on order for bike but it seems to be taking an age, trying to hold off ordering a jumper cable as I think that would be just as long in turning up.
Cheers for the help anyway!

 

[BillV]

Hard to tell from your picture but it looks like they're just using the ground from the SDS plug and the two leads from the Yosh plug. If you could figure out what leads they are, you could remove them from the Yosh plug and plug them into the SDS plug, i.e. I think that they use the same terminals.

The only reason that I can see for them to go to all that trouble is that the EM Pro maintains the dealer mode and SDS capability of the OEM ECM.

 

[Doug68]

I've gotten lost in the thread what you're trying to work out?
I'll have the seat off of my bike in a day or two what is it that's left for you to determine?
Do you have the cable that goes between the socket in the last picture (which is the one the interface cable will plug into) at one end and USB at the other?

 

[kwaka10r]

Basically, this is how I see it. Correct me if I am wrong BillV.

Not all of the wires needed for flashing are in either the SDS or Yosh plug. So connection is required to both plugs. Or, a jumper for two of the wires from one plug across to the other plug is needed to facilitate a one plug connection.

 

[BillV]

kwaka10r: As best I can tell, F4ST GIXXER's cable needs the ground in the SDS connector and two leads in the Yosh connector to flash or provide whatever capability is associated with that connector. I'm a little surprised that three leads are all that's needed. But what do I know?

Doug68: What we need to know is what are the two leads that are connected to at the Yosh connector. The simplest way to identify them is to trace each lead in the short harness that runs to the Yosh plug and then note the color of the wire that runs in the main harness from the ECM to the Yosh plug for that wire. My best guess is that the W wire in the short harness connects to a Bl/Y lead in the main harness at the Yosh plug and the B(Dgr?) lead connects to a Bl/G lead. But that's what we're trying to confirm. The only other possibilities that seem to make any sense are the Bl/B and Bl/W leads.

 

[F4ST GIXXER]

I wonder if this would be of any use?? Can just about see what pins are going from yosh to sds. May have connectors kicking about to make cable.

http://www.bazzaz.net/instructions/Em 643i.pdf

I wonder when kit loom appears if it has all six pins connected in the SDS port. Hopefully be here the end of the week, possibly. Would have been good to get it working with this standard loom setup though.

 

[T.R.E]

You don't need to connect anything to the SDS connector for the quickshifter to work. You just need to ground pin 52 I think,Bl/W. I did this to my K7 4-5 years ago.

I don't know why bazzaz went to all this trouble...

 

[Doug68]

Doug68: What we need to know is what are the two leads that are connected to at the Yosh connector. The simplest way to identify them is to trace each lead in the short harness that runs to the Yosh plug and then note the color of the wire that runs in the main harness from the ECM to the Yosh plug for that wire. My best guess is that the W wire in the short harness connects to a Bl/Y lead in the main harness at the Yosh plug and the B(Dgr?) lead connects to a Bl/G lead. But that's what we're trying to confirm. The only other possibilities that seem to make any sense are the Bl/B and Bl/W leads.

So looking at my bike today, I think its got the full Yosh harness on it as the interface plug is part of the main harness and is not separable from it.

 

[T.R.E]

If you have a race harness then you should have an injector plug just beside the throttle bodies,just like the older models K1-K4 used to have. And also you should have keyless ignition,kill switch is the on-off switch instead of the key.

 

[Doug68]

If you have a race harness then you should have an injector plug just beside the throttle bodies,just like the older models K1-K4 used to have. And also you should have keyless ignition,kill switch is the on-off switch instead of the key.

Yeah, I've no ignition switch, I'll have to check on the other connector.
I've never had anything to do with a stock one of these bikes, so it can make it tricky on occasion knowing whats stock and whats not, particularly with the wiring.