EDIS4 issues. I'm very lost.

Electric Space · Post by **Electric Space** » Tue Jan 24, 2006 3:33 pm

Look at this picture.

http://img220.imageshack.us/img220/6169/edis4ms4nz.gif

I had the one on the right to refer to with my MSII.

The picture on the left (courtesy of punky) is easier to understand with normal terms, but some other language that I don't know, however I still understand all the wires.

HOW can I test my EDIS4 wiring to see if its getting power?

Also, the MS lights on the board itself...are they supposed to dim out after a few minutes of non-activity? The middle one lights up REAL good. I saw it in direct sun, but none of the others light up.

EstateAgent · Post by **EstateAgent** » Wed Jan 25, 2006 10:58 am

The way I would test it is:

-Disconnect the MegaSquirt
-Have a sparkplug setup so you can see it (or get a spark tester)
-Crank the engine over - you should see spark!

If the car still wont start when the MS is on (or worse, cranks over poorly - i.e stalls) then check the wiring from the EDIS to the coil pack is the right way round. I had this problem at first!

Electric Space · Post by **Electric Space** » Wed Jan 25, 2006 9:26 pm

Thats the thing...I tried that. I thought that since the EDIS4 setup has power, MS has power, everything is hooked up properly (VR could be closer to the wheel), then it should spark, right? It doesn't.

What usually goes out on those things? Or do they just not go out?

Also, says to plug the EDIS4 power to the EFI/main relay, but that turns on with AFM and I don't use AFM on this. HELP!

Post by **jsmcortina** » Thu Jan 26, 2006 6:48 am

Rewire your main relay like the Megasquirt wiring diagram then.

The EDIS must be able to spark on its own. The usual culprit is the VR sensor wired backwards.

James

Electric Space · Post by **Electric Space** » Thu Jan 26, 2006 3:59 pm

jsmcortina wrote:Rewire your main relay like the Megasquirt wiring diagram then.

The EDIS must be able to spark on its own. The usual culprit is the VR sensor wired backwards.

James

DOH! So you CAN wire that thing backwards. Very good to know.

I don't fully understand what you mean by rewire the relay like MS wiring..
Like 1 wire to ignition, 1 wire to power, another to ground?

Electric Space · Post by **Electric Space** » Fri Jan 27, 2006 5:39 pm

So I need to find out what exactly wire #7 goes to.
Is it connected to the sheilds only?

motown menace · Post by **motown menace** » Sat Jan 28, 2006 7:43 am

Yes, wire #7 is for the shields. I didn't even use wire #7 when I installed EDIS and everything worked fine. If you do use it though, all you do is buy wire shielding, it's kind of like a sleeve for the wires. Then solder wire #7 to the shielding. That's it, it act's kind of like a ground path for any errant electrical signals that try to "attack" the wires. Instead the signal hits the shield and grounds thru pin #7.

Electric Space · Post by **Electric Space** » Sat Jan 28, 2006 12:26 pm

motown menace wrote:Yes, wire #7 is for the shields. I didn't even use wire #7 when I installed EDIS and everything worked fine. If you do use it though, all you do is buy wire shielding, it's kind of like a sleeve for the wires. Then solder wire #7 to the shielding. That's it, it act's kind of like a ground path for any errant electrical signals that try to "attack" the wires. Instead the signal hits the shield and grounds thru pin #7.

Thank you very much for that bit of helpful info!

I'm convinced something in my EDIS4 setup is bad, bornt out, or broken.

I've got the VR close to 1mm away from the wheel, the wiring hooked up except for that relay, I have an on/off switch, and push button start so I can be outside of the car while cranking it to see spark and no sparky.

Thanks much for the info that everyone contributed.

Post by **jsmcortina** » Sat Jan 28, 2006 12:42 pm

Have you confirmed that your EDIS module and coilpack receive 12v during cranking?
Did you try swapping the VR sensor wiring over?

James

Electric Space · Post by **Electric Space** » Sat Jan 28, 2006 1:42 pm

jsmcortina wrote:Have you confirmed that your EDIS module and coilpack receive 12v during cranking?
Did you try swapping the VR sensor wiring over?

James

I'm not entirly sure which wire to test for cranking power.

Yes, I have switched both VR sensor wires.

I do not have #7 pin going to anything. Just rubber banded out of the way.

motown menace · Post by **motown menace** » Sat Jan 28, 2006 3:25 pm

Your coil pack has three wires coming out of it, two should be going to the EDIS module, the third should be connected to +12V ignition source. Alot of people ground this wire because the diagram is kind of confusing. I did it my first time, that's how I know

Electric Space · Post by **Electric Space** » Sun Jan 29, 2006 3:05 am

motown menace wrote:Your coil pack has three wires coming out of it, two should be going to the EDIS module, the third should be connected to +12V ignition source. Alot of people ground this wire because the diagram is kind of confusing. I did it my first time, that's how I know

Whats strange is I had it grounded before I 'redid' the wiring.
Now I have it alive? Wonder how I got messed up over a white/red st wire and a green/black wire...

Thanks much for the insite.

Electric Space · Post by **Electric Space** » Sun Jan 29, 2006 9:41 pm

Have yet to check it out, but I'm wondering....

How to get circuit open relay to work for fuel pump and ignitor/coil without AFM.
Above it says to wire it up like the MS diagram...that would really work?
What about hooking it up to a 2way switch?

Electric Space · Post by **Electric Space** » Tue Jan 31, 2006 11:17 pm

2-day bump.

Electric Space · Post by **Electric Space** » Fri Feb 03, 2006 2:28 am

To everyone that helped me, I thank you.

To those who know what help I need, yet aren't confident enough to help me, its ok.

I had 2 other people who have experience in EDIS4 look at my wiring...guess what? They said it was wired right.
I can't go by their say-so since I don't know if they truly did it before, but I feel better about my wiring.

They are at a loss for words, too.

All 3 wires to the coil pack have power. How much? I don't know, but I do know it isn't right.
One is a signal, one is a ground and the other is a constant, right?
I went to the dead center of MSEFI help and I'm still WAY stuck on what is happening to this.

Do I need the TPS and fuel pump wired in to get a spark? I didn't wire either one since I didn't think it was really nessarry, because I have no spark quite yet and I can figure out the fuel pump and tps no problem...just not that importlant....or are they?

Post by **jsmcortina** » Fri Feb 03, 2006 6:51 am

Electric Space wrote:All 3 wires to the coil pack have power. How much? I don't know, but I do know it isn't right.
One is a signal, one is a ground and the other is a constant, right?

No.
The middle one is +12v supply.
The outer two are grounded by the EDIS module when it wants to charge the coil. The connect between EDIS module and coilpack only.

Did you confirm that the coilpack is getting +12v during cranking or not?

Did you try swapping the VR sensor wires?

James

motown menace · Post by **motown menace** » Fri Feb 03, 2006 9:00 pm

Yeah, like he said. the outer two wires go to the EDIS module, the center wire goes to the +12V run/crank power source.

Te EDIS system will work with nothing else on the engine working. It is kind of a complete "Standalone" ignition setup. As long as the module has power and ground, and the VR sensor and coil pack are wired up it will spark when the engine is cranked. All it needs the Megasquirt to do is tell it how to advance/retard timing. Without megasquirt input it will run 10* BTDC. This will allow the engine to run even if it gets no signal from the ECU.

If your engine cranks and you get no spark, then your wiring or a component is bunk.

If you have any pictures of your setup post them on here so we can take a look at the wiring if possible.

Electric Space · Post by **Electric Space** » Wed Mar 01, 2006 6:52 pm

I did swap VR wires with the same result.
I used pinky's wiring. It is in Russian or some language that I don't know, however the numbers are understandable as they are numbered accordingly.

I've rewired 4 times with 5 other people who are automotive savvy and they're at a loss for words as I am.

Again, thanks much for the help, but still no spark!

Electric Space · Post by **Electric Space** » Wed Mar 01, 2006 7:01 pm

Someone mentioned to use the origonal relay, but how would I wire that up? I think that's where I'm lost, mostly.
Would wiring up an on/off switch work instead of a relay?

MegaScott · Post by **MegaScott** » Wed Mar 01, 2006 8:24 pm

Electric Space wrote:Someone mentioned to use the origonal relay, but how would I wire that up? I think that's where I'm lost, mostly.
Would wiring up an on/off switch work instead of a relay?

Yes an on/off relay will work, but not recommended. you want the power to the EDIS module and coils to be removed if the engine is not running. Relays are not hard to find, you can get a fog/driving light relay from the auto parts store, or relays used in the car alarm industry work good too.