[Solved] Pin Usage?

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chevyowner
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[Solved] Pin Usage?

Post by chevyowner »

I have a MS3X and I am trying to determine what pins do what.
I have read the pinouts, but I don't quite understand how TunerStudio tells what pins are used for what.

I cant attach a data log as don't have one because with out more information I cant wire in the MS3X. No the car does not run at all until I get a ECM working.
At this point this is just a last attempt at getting help with the device before I scrap using it and go with something like HP tuners and a GM LS PCM.
Last edited by chevyowner on Sun Aug 31, 2014 8:37 pm, edited 1 time in total.
dontz125
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Re: Pin Usage?

Post by dontz125 »

Part of the problem is that the MS3 is so flexible that there are several function options for each pin, and several pins available for many functions. The .ini tells TS what pins are available for which function; these are shown in the drop-down box in each function's TS menu.

What are you trying to get it set up to do?
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chevyowner
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Re: Pin Usage?

Post by chevyowner »

I have a 5.3L LS based engine for a swap.
I want to run COP and sequential injection.
I would like use it for speedometer corrections also.


I am horrible at describing things.
Is there a dialog in TunerStudio that shows all the pins used and what they are used for in the same place?
I might have seen one but all i have seen does not make sense to me. All of the settings pages I have looked at make sense but I cant seem to find in the software what pins are used for what. Do I need to look at every setting box and hope I don't miss any?
Matt Cramer
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Re: Pin Usage?

Post by Matt Cramer »

There is a dialog under General Settings to see what pins you are currently using. But for wiring things up, see the sections in the manual on the specific functions. For example, the speedometer is covered here:

http://www.msextra.com/doc/ms3/speedgear.html
Matt Cramer -1966 Dodge Dart slant six running on MS3X
dontz125
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Re: Pin Usage?

Post by dontz125 »

QuadraMAP Sensor Module -- PWM-to-Stepper Controller -- Dual Coil Driver
Coming soon: OctoMAP Sensor Module
TTR Ignition Systems
chevyowner
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Re: Pin Usage?

Post by chevyowner »

I am probably doing thing something wrong none of the pin names in TunerStudio match the documentation.
I think I know where the pin list is but my copy of TunderStudio does not have a pin list in general settings.
jsmcortina
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Re: Pin Usage?

Post by jsmcortina »

Can you give an example of pin names that don't match?

What menus do you see on the Basic/Load settings?

Here's a screenshot of that menu from the current firmware. (The firmware version determines the menu you see in TunerStudio.)
Screenshot.png
James
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chevyowner
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Re: Pin Usage?

Post by chevyowner »

I cant find that pins following pins in the documentation.
PE0
PE1
Flex
FP
Tableswitch in
Nitrous In
IAC1
IAC2
Tacho Out
(PK1)
LaunchIN
(PK3)
(PM2)
Inject LED
Accel LED
Warmup LED
Inj Bank 1
Inj Bank 2
PT4
PT5/JS10
ext_map (ADC11)
EGO2 (ADC12)
SPARE (ADC13)

There are a few more in there I have not looked for yet.
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Re: Pin Usage?

Post by jsmcortina »

Where can't you find them and where did you look?

(Not trying to be awkward here, I just quite follow your question.)

Injectors and coils are pretty much fixed on what pins are used, but for most other features - YOU pick what pins to use.

James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk

My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
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elaw
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Re: Pin Usage?

Post by elaw »

Well I can help with many of those...
First: most signals whose names start with "P" and end with a number are internal connections. That applies to PE0, PE1, PK1, PK3, PM2, and PT5/JS10 (although JS10 is sometimes wired as an ignition output on the mainboard). I'm not sure what PT4 is.

"Flex" is pin 5 on the MS3X DB-37 connector.
"FP" is fuel pump control, that's pin 37 on the mainboard DB-37 connector.
"Tableswitch in" and "Nitrous in" are pins 28 and 29 respectively on the MS3X connector.
"IAC1" and "IAC2" refer actually to 4 connections called "IAC1A", "IAC1B", "IAC2A", and "IAC2B". Those are on pins 25, 27, 29, and 31 respectively on the mainboard connector.
"Tacho out" is pin 26 on the MS3X connector.
"Launch in" is pin 11 on the MS3X connector.
The "LED" signals aren't connected to external pins unless custom wiring has been done inside the Megasquirt. Otherwise they're used to drive the 3 LEDs on the mainboard.
"Inj bank 1" is on pins 32 and 33 on the mainboard connector (2 pins in parallel to handle higher current).
Likewise, "Inj bank 2) is on pins 34 and 35 of the mainboard connector.
"Ext_MAP/ADC11" is on pin 23 of the MS3X connector.
"EGO2" is on pin 22 of the MS3X connector.
And "SpareADC (ADC13)" is on pin 21 of the MS3X connector.
Eric Law
1990 Audi 80 quattro with AAN turbo engine: happily running on MS3+MS3X
2012 Audi A4 quattro, desperately in need of tweaking

Be alert! America needs more lerts.
dontz125
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Re: Pin Usage?

Post by dontz125 »

dontz125 wrote:Have you seen the MS3X external wiring diagram?
That's a link ^^^^ - click it to find a schematic that should identify most of the pins you're looking for.
QuadraMAP Sensor Module -- PWM-to-Stepper Controller -- Dual Coil Driver
Coming soon: OctoMAP Sensor Module
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chevyowner
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Re: Pin Usage?

Post by chevyowner »

Thanks elaw
jsmcortina wrote:Where can't you find them and where did you look?

(Not trying to be awkward here, I just quite follow your question.)

Injectors and coils are pretty much fixed on what pins are used, but for most other features - YOU pick what pins to use.

James
I don't find diagrams like I see all over very helpful. I would take a pinout every day over about 99% of the diagrams I see.
I TunerStudio yes it does tell me the pin name but not what is using it. Yes I do know I can chose what does what, but I don't know what pin uses what pin name.
This is where a pinout would help.

Example
If wanted to make a cable for some kind of serial connection a page like http://pinouts.ru/SerialPorts/Serial9_pinout.shtml is far more helpful to me then any diagram for a cable.
jsmcortina
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Re: Pin Usage?

Post by jsmcortina »

There is a table on the page that Don already linked you to.
http://www.msextra.com/doc/ms3/hardware.html#pins

James
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My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
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billr
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Re: Pin Usage?

Post by billr »

Chevyowner,

Where are you located? Perhaps there is an experienced member near enough to help you in-person. I, like others responding here, am mystified at the confusion about the basic pin functions. Those are described in so many different places and ways, I don't know what additional words, tables, or drawings I could suggest. As to the pin-outs in TS, I didn't even know those existed until this thread! They certainly aren't needed to get an engine up-and-running with COP and full sequential fuel, so don't get bogged down there if it is unclear to you.
chevyowner
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Re: Pin Usage?

Post by chevyowner »

I have not been posting much because I finally got the engine back from the machine shop last Monday (6/16/2014) and have been working getting it and the transmission installed.
I still need to buy a few more sensors, injectors, and whatever else I forgot.

After all that Is done i can start wiring. I asked early to give more time for answers.

I live in Preston Idaho.
chevyowner
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Re: Pin Usage?

Post by chevyowner »

If I found a real pinout I could make this work.

All of the diagrams tell me the software names, but i don't need to know the software names I need the pin on the hardware.
I cant connect adc11 to the sensor if i don't know what pin and connector adc11 is, the software name adc11 does not help.
For all I know it could be pin 1-37 on either connector.

You cant see why the diagrams don't help me, but I don't see why a real pinout cant be had.
elaw
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Re: Pin Usage?

Post by elaw »

The list that Don and James provided a link for (this) tells you that! At least in the specific case of ADC11, but most other signals too.

One thing you have to realize is that not all signals in the Megasquirt are connected to specific pins on the connectors. The mainboard connector has a number of designated "spare"pins, plus a few others that could be used as spares if you wanted to, that can be wired to different signals inside the unit depending on what you want to do. Those things of course can't be documented by people here because they're defined by whoever assembles the unit (or whoever last modified it). That's why signals like JS10, near the top of that chart, have no pin numbers associated with them.
Eric Law
1990 Audi 80 quattro with AAN turbo engine: happily running on MS3+MS3X
2012 Audi A4 quattro, desperately in need of tweaking

Be alert! America needs more lerts.
racingmini_mtl
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Re: Pin Usage?

Post by racingmini_mtl »

Have you even looked at the page linked above (by more than one person)? The table does have the pin numbers in columns 4 and 5. Or is your issue that it is too complicated because the table is not in the numerical order of the connector pins?

Jean
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billr
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Re: Pin Usage?

Post by billr »

The "real pin-outs" are there in the info already referenced. It's not that we can't see why the diagrams don't help you, we can't see why you are not seeing the pin-outs. You need a fresh set of eyes on this; is there nobody, no friend, relative, neighbor, etc. that you can get to lend you a few hours? That's assuming none of us can help you in-person in Preston UT.
elaw
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Re: Pin Usage?

Post by elaw »

This is a little off-topic but something that just popped to mind: it would be cool if the pinout list could be published in, for example, a .csv format. Then it could be downloaded into a spreadsheet program, sorted and filtered, and users could add notes specific to their own setups.
Eric Law
1990 Audi 80 quattro with AAN turbo engine: happily running on MS3+MS3X
2012 Audi A4 quattro, desperately in need of tweaking

Be alert! America needs more lerts.
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