Can L & h

[Jimmer009]

Hi, I am new to this and in a bit over my head here. But I installed a Volvo electric power steering pump on my 91 mustang. I want to use my ms2 v3.57 with daughter board. It says I have to connect js6 and js8 to can h and can l. How ever can L and spark1 shar the same pin. And is what I believe my coil control (it comes from js4).

How should I go about this. Or is this a possibility???

[dontz125]

Not to be rude, but yeah - you're seriously confused. JS6 & JS8 are your CAN pins, no sparks at all. JS4 is your ADC7; it's sometimes used as Spark F, but I don't think that's the case here. Go back to the schematic- spark A is either D14 or (in a very few, very specific cases) JS10.

What are you trying to achieve?.What are you working on?

[Jimmer009]

I'll try to post a pic. Sorry it so small. I'm trying to achieve can bus control of a power steering pump. But I'm really leaning towards just getting an external controller for it.

[dontz125]

Sorry - I misread your post. Without a lot more info, I really don't think the MS2 can control the PS.

What has me concerned, however, is that white wire in your pic. Unless I'm mistaken, it's connecting PE0 directly to the DB37. Bare processor pins exposed to the great outdoors are a fast way to needing a new chip ...

[Jimmer009]

So I did buy a controller. I won't run it through Ms. But the board does sit in a nice aluminum case. If that is what your saying???

[dontz125]

Nope. That white wire is supposed to be really short, and connected to Pin 10 (JS7) on the daughter card. JS7 on the main board is supposed to be connected to some protective components in the proto area that will prevent magic smoke from escaping from the processor.

Read the MS2/V3.0 manual again - Daughter Card Mods

[Jimmer009]

Well I don't want the magic smoke hiding in there. I did buy this off market place a couple years ago. The car runs great with it. And I have full control in tuner studio. So what would recommend I do??? I'm sure if I sat down with a schematic I could put it to how it supposed to be. But if I do change it, does this give me can bus back. Or is it just something that this set up don't do well. Like I said I already have a controller coming. Thanks for your time. I appreciate you helping me out. I'd love to have this thing as it is supposed to be.

[dontz125]

The first thing you need to do is cut that white wire away, until you've read the appropriate sections in the manual. Connecting JS6 & 8 to the SPR1 and 2 pads on the DB37 will give you your CAN back. After that ... plan, design, build!

[jsmcortina]

Having CAN connected is one thing - doing something with it is quite another.

As an analogy, I have a telephone and can dial the numbers to reach someone in Mumbai. But it doesn't mean that I can speak Marathi if they answer.

James

[Jimmer009]

I like your analogy js. I think it's very fitting for me and this situation.

So I have the db37 connection. However the one I use (what it came with) is a 1 wire output. I connect that to my spout on my car. So the pic shows can bus and spark1 and 2 are also both can bus slots. I see js6 and js8 so I connect 6 to sprk 1, and 8 to sprk2. Then I use the db37 to go to my spout on the tfi???

I did find the manual. It's long and hard to follow. I'm working threw it. But I'm at work and can't focus 100% on it.

[jsmcortina]

The SPR (spare) 1,2,3,4 pins on the DB37 are simply "spare" until someone solders a wire to them inside.

From what you are saying, whoever built the board chose to connect the TFI "SPOUT" signal on one of these spare connections? That doesn't make it anything to do with CAN.

You could theoretically drill a hole in a case and pop the wires from JS6, JS8 out through it for your CAN connection, or pick different spare pins and use them instead.

James

[Jimmer009]

Man I might do that. Is it a horrible idea??? It seems to easy for everything else Ms brings lol. But in tuner studio I have spark A output pin as d14. I run a msd 6al before my coil.

[Jimmer009]

So I understand I can't speak Marathi. So im thinking I'd rather wire it right vs drilling a hole. So I would just move the wire to spar 3 (sorry I thought it was spark). I don't see something like ignition out. Is there a correct pin for an out to run the tfi??? Or just match with the db37 pin I put the wire to??

[jsmcortina]

For a single ignition output it is conventional to use pin 36. This is shown in the manual.

Don't drill a hole through the case for the CAN wires, that was just an extreme example. The SPR (spare) pins 1,2,3,4 are just that - they are a pin on the main ECU pin, and a pinhole on the board.
If you don't need the white wire, just cut it off and solder on the CAN jumper wires as per the Hardware Manual.

However, what are you actually going to do with the CAN connection? It is useful for connecting dashes that are able to listen out for the Megasquirt "Dash Broadcasting" dataset. Most arbitrary devices (such as PAS) are not supported.

James

[Jimmer009]

Yea I don't see drilling a hole as the way to go. I currently have the motor out so I might to move the white wire. Just to see it run I have a done a wire tuck so just got to make sure I didn't miss something.

So if I take off the white wire I could simply move it to spr3. And to my spout. But correctly I do need to run jp4 to where pin 30 is right?? It's not something that would default back to pin 30, as that would make it easy lol.

As far as can bus I am running a Volvo electric power steering pump. It has can bus so I can control the speed of the motor. I actually bought a dial controller. But I'm not sure witch way I want to go. But my mind might be made up for me, if it's not supported. I'd rather do it threw Ms though.

[Raymond_B]

Yea I don't see drilling a hole as the way to go. I currently have the motor out so I might to move the white wire. Just to see it run I have a done a wire tuck so just got to make sure I didn't miss something.

So if I take off the white wire I could simply move it to spr3. And to my spout. But correctly I do need to run jp4 to where pin 30 is right?? It's not something that would default back to pin 30, as that would make it easy lol.

As far as can bus I am running a Volvo electric power steering pump. It has can bus so I can control the speed of the motor. I actually bought a dial controller. But I'm not sure witch way I want to go. But my mind might be made up for me, if it's not supported. I'd rather do it threw Ms though.

You're not going to control that pump by just wiring it up to your Megasquirt you might be on the CAN bus, but like James is trying to point out they will not talk to each other. Use the controller you purchased.

[Jimmer009]

Thank you for help guys. This is just something that is hard to wrap your head around.

[Raymond_B]

Thank you for help guys. This is just something that is hard to wrap your head around.

For what it's worth I have that pump too and have a controller from https://www.nmstec.ca/product/psc/, see this thread viewtopic.php?t=77411. He is super helpful!

[bobxyz]

1) You need to figure out what that white wire is. It looks like it's connecting JP4 on the plug-in CPU board to SPR1. This would be an input to the CPU. TFI SPOUT is an output of the CPU. It's usually wired on pin 36 of the DB37 connector, which is also called the IGN or SparkA pin.

2) MS2 will not directly connect to the Volvo EPAS over CAN. Some of the add-on aftermarket EPAS controllers will take a VSS input from MS and reformat it as needed for the Volvo EPAS. Which EPAS controller board are you using?

3) There's some good discussion about adding direct ECU to Volvo EPAS over CAN for some different after market ECUs, e.g. https://forums.linkecu.com/topic/20720- ... nk-g4x-pp/