what does the LAUNCH see when you have the wiring disconnected?
Any codes from anything?

What did it see when you had the pugs connected?

Your mileage might vary.

The (very) budget tools I tried didn't work for me so I purchased ScanDoc. It works great on the OBD port but does complain occasionally about "anti theft device detected".

Project Gus has had good results using OBDLink LX dongle and an android app. See https ...

I think this topology is for a LHD as my IGPM is on the right, not left as shown

Can't remember where temp comes from but the battery percentage is from the BMS.
My car is RHD, if yours is LHD wiring layout is a bit different.

While working on getting access to the ETM I suggest you unplug the connectors between the wiring under the dash and the loom on the floor on BOTH the RH ...

You're on the right track with the VPN.

Yes A piller as per your picture.

The following photos show the wiring harnesses. You can just make out the block of connectors down by the door. The loom runs along beside the door and also branches across the car under the seats.
IMG_20241107_140154_1.jpg ...

Here's a link to the Euro login site for Hyundai
https://service.hyundai-motor.com/euro5/jsp/tourguide.tiles?siteCd=H

If you login from a German location you'll pay tax, log in from any other EU country and there's no tax.

You can explore the site without logging in and it doesn't seem to mind ...

Mine is a full electric extended range Kona. When I say fuel gauge I'm referring to the full/empty gauge in the bottom of the speedo.

The fuse box in your photos is called the IGPM (integrated gateway power module). As well as doing the supply for lots of body modules it is a CAN gateway between ...

The following is based on my experience with a 2021 kona, so may not be exactly the same on the 2024.
At the base of the front A pillar on both sides are large connector blocks with several connectors.
This is the point where the engine loom, main harness, and floor harness all connect together.
I'd ...

Hi Fuss,
You say the car has "damaged doors" can you provide more detail?
The P-CAN bus goes around the engine bay and inside the dash area but all so goes into the floor harness and down to the back of the car.

So depending on where the damage is it may be damaged further down the car.

That's massive, well done! Are you planning to actually install all the components like the IEB in the conversion, or are you still deciding about that part?


I'm not intending to do a complete "rebody" of a Kona but will probably use the IEB and steering column at least. I don't have a specific ...

Some progress.
After working my way through clearing power train DTCs the last one was a LIN error saying it couldn't talk to the battery.
Hardly surprising since the only thing left of the battery was the positive terminal. Everything else including the negative lead and sensor went west when the ...

I've been playing some more and now have the transmission park fooled into thinking it is locking and unlocking the transmission while it remains locked. Not long to HV power up
] crude but effective.jpg
Crude but effective

I've also scanned the IGPM to find what messages it originates and what ...

I've captured some logs for running ScanDoc diagnostics against MCU, VCULDC, and IGPM for anyone interested.
https://github.com/Pelland-Coupe/EV_Hac ... us/ScanDoc

I'm very please with the ScanDoc tool so far.

My ScanDoc module has arrived and a quick test seems to show it's as good as the online demo.
No problems listing DTCs from BMS & VCU. Open/close contactors, read VIN etc.


FWIW if an airbag has deployed then you probably won't be able to clear the "crashed" signal via diagnostics.

Yes I was ...

I've written down UDS IDs for both water pumps at some point but I'm actually not sure the water pumps have UDS functions


I've just run a UDS scan on the BMS EWP and yes it does respond - send 0x715 reply 0x71D. Nothing in the generic range seems to be supported but could support some vendor ...

Hi ProjectGus,
I found your UDS list when I went to download the latest version of your DBCs, Great resource thanks.

I'll rescan the waterpumps directly an see if they respond

I've been playing with the Airbag module as I'd like to work out what's needed to clear the crash symbol on the dash. I ...

Hi Projectgus,

I have had good luck getting diagnostics using an OBDLink LX dongle and this Android app

I got the bluetooth module to try the android app. I must confess I wasn't expecting much as I paid more for shipping than the module.

I have been looking at ScanDoc for a while, but wanted ...

Hi All,
I think I've just found one of the manufactures of the connectors for the Kona. It appears to be KET http://www.ket.com/en/main.ket

I found a full catalogue at this link https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=http://5.imimg.com/data5/SELLER/Doc/2024/7/432137399 ...

I've been having great success with my setup. 12V Power up has been successful and I have lots of lights etc, So now I can start playing.

Lots of rabbit holes with trying to get the D-CAN bus talking and sniffing the P-CAN. Turns out that the only scanner software that will talk to the D-CAN is OBD ...

Magnificent work ProjectGus.

Looking through your connection list I see the note against the EPCU wake up signal. I wonder if this is associated with waking up the LDC to charge the 12V battery when the vehicle is turned off.
https://www.youtube.com/watch?v=1rorGxxebL8

I'm on Github now.
Just put all the logs etc up for the water pumps.

https://github.com/Pelland-Coupe/EV_Hacking/tree/main/hyundai_kona_ev/Water_pumps

And we have a wiki page too.
https://openinverter.org/wiki/Hyundai_Kona_EV_Coolant_Pumps

Discovered error in lowvoltage threshold in ...

What happens on a "purge", exactly?

Apologies, I've been looking at the pumps so closely I forgot that not everyone has been doing that.

Part of the repair process for anything to do with the cooling is to initiate a "purge" to remove any air trapped in the system. Needs the expensive Hyundai ...

Pump progress.
I discovered a red herring with the PSU I was using. When the pump does a rapid ramp up the current limit bites momentarily causing a voltage dip.

So keeping the current under control for some tests and using a fixed 20A supply for others I've managed to characterise the water pumps ...

Started testing the front pump with water connected and so far I can't get any of the 3 alarm bits that I was seeing under various conditions without water.
With flow fully open the pump will still cycle when not receiving CAN, but doesn't produce any alarms. Restrict the flow slightly and the pump ...

]Hi Projectgus, I downloaded your latest DBCs and saw you had already added the two pump signals.
I've now got send coms working and have done a lot of searching through your various log files.

I have verified the "control" message for both pumps, 0x523 matches 0x570 and 0x4de from the BMS matches ...