What data can be drawn from ECU/PC3 ?

[VladTepes]

Obviously our bikes don't have OBD-II ports or anything fancy like that but I'm wondering what digital information can be drawn from hooking up to the ECU/PC3.

Presumably that's what generates the errors which are then shown up on the screen in the gauge cluster (F1 etc) but I wonder if other data is available somehow?

[Hooli]

Read the manual Vlad 

You can get real time readings for any sensor by reading the voltage from it's 'info wire', as the all have power, earth & an output 'info wire'. The manual shows what the voltages should be at certain conditions so you can calculate all the others.

[VladTepes]

Read the manual Vlad 

You can get real time readings for any sensor by reading the voltage from it's 'info wire', as the all have power, earth & an output 'info wire'. The manual shows what the voltages should be at certain conditions so you can calculate all the others.

Any particular part of any particular manual?

Is there a way to get that data from the ECU rather than having to tap into individual sensors?

[Eric GSX1400K3]

Dont think so, theyre a pretty basic ecu.

[VladTepes]

Oh coz tapping into individual wires (without causing any signal voltage changes to be misinterpreted by the ecu) would be problematic. Especially for hard to get to sensors.

[gsxbarmy]

Obviously our bikes don't have OBD-II ports or anything fancy like that but I'm wondering what digital information can be drawn from hooking up to the ECU/PC3.

Presumably that's what generates the errors which are then shown up on the screen in the gauge cluster (F1 etc) but I wonder if other data is available somehow?

I think that that's probably a question only @Thommohawk can answer (as its his line of work). Suggest pm him @VladTepes asking that question (or how you might achieve getting the data you are looking for) as he doesn't come on here that often

[Hooli]

Read the manual Vlad 

You can get real time readings for any sensor by reading the voltage from it's 'info wire', as the all have power, earth & an output 'info wire'. The manual shows what the voltages should be at certain conditions so you can calculate all the others.

Any particular part of any particular manual?

Is there a way to get that data from the ECU rather than having to tap into individual sensors?

I'm not aware of a way from the ECU, I think it's too basic.

My understanding of the system is to get live diagnostics off it you need to make a 'sandwich plug' that goes between the ECU & the loom to give you a feed off each sensor's 'info wire & then feed them into something you'd rigged up to read them.

As to which bit of the manual, depends on the sensor. If you look at the diagnostic tests for each sensor it gives you expected values & so forth.

I can't recall quite what a PC3 shows when connected (apart from I know it shows TPS readings as a percentage of throttle) but maybe a PC5 shows more?

[grog]

Live Data, would be so good to be able to have. No idea how you could get adapters needed. Makes a check so easy. Just finished now watching it on a late model Toyota. So much info, even telling me how much each fuel pump is flowing, dual tank Prado. Amazing tech.

[Monarchjock]

Healtech have already made a tool that does what you need. It takes all measurements from the diagnostics plug.
https://www.healtech-electronics.com/products/obd

[KiwiCol]

That looks a fine piece of kit Monarchjock, bit pricey, but does lots.   I am tempted . . .

[Monarchjock]

It would be great if they would add bluetooth and an android version of the software! As it is you have to carry a windows laptop with you if you want to do a road diagnostics run.
If you download the software without buying the tool, it comes with some saved diagnostics runs to play with.

[VladTepes]

Developing an android version of software would also (as far as the market is concerned) require them to develop an iOS version for apple people.

Neither of these is cheap and whether it would actually be worth it to them is questionable.

Taking into account the hardware, software, ongoing updates, warranty etc I can see where the price starts to mount up.

Still it is a lot of money - undoubtedly worth it if you worked on bikes for a living (or even lots of bikes as a hobby) but as a solution for a single user its a bit of an ask $ wise for most of us.

There are 2 major components here
1. The raw data collection (hardware does this)
2. Processing /analysis of the raw data into a format meaningful to humans for assist diagnosis.
- includes sensor values shown in real time, enabling extended fault and engine performance analysis. Test functions are also included.
- data captured automatically and can be saved to disk/exported to excel/print

------

A more basic tool (I envisage) would allow the user (when the FI light comes on) to read the diagnostic trouble codes. From there it would display the sensor/sensor state fault involved. (i.e. from the table in the owners manual)
And ideally, offer some basic 'troubleshooting' information. Though this latter part may be more complex.
As this wouldn't involve any fancy windows program, or ability to save the data, it could probably be accomplished by:

Raspberry Pi 3 Model B+  £50
Suitable case with 3.5" TFT screen £11 link
Plug with wire to relevant sensors/diagnostic plug on bike.  prob max £15
microSD card (say 32Gb) £10

so total around £86

(or more if wanted a bigger screen)

Is this more expensive than the bridge with a wire and then look it up in the manual?
Absolutely.
Is it way cooler? Yep.

And of course the raspberry pi could be used to do other things as well...
Maybe even a bit more complex diagnostic stuff if I ever figured that out....

[Teufel]

Hi Vlad,
How about Woolich?

https://www.woolichracing.com.au/products/suzuki/gsx-1400/suzuki-gsx-1400-ecu-flashing.aspx#productTable

It says live engine data.
I use Woolich on my track/race bike.
It's a little daunting, but just remember to save AND LABEL the mapping every time and you can go back whenever you mess up.
Also don't forget to hook up a battery charger when in use.
I read and wrote to the ECU 3 times and it wouldn't start. That's how much power it sucks up.

[grog]

Mate had his MT10 Woolich tuned. Gained 37 bhp on dyno. Totally changed its sound, performance too much for me. Incredible.