here's the related diagram. It lacks info which and whether the switches are momentary or toggle and my small brain does not comprehend how exactly it works, but maybe some brighter minds here have an idea..
Re: Hellen 121 ME7 for VAG PnP ECU
Posted: Thu Feb 04, 2021 7:05 pm
by AndreyB
now it's way easier for me to use. I am sorry I've barked but those details like exact pin numbers are making my life way easier
now it's way easier for me to use. I am sorry I've barked but those details like exact pin numbers are making my life way easier
It's all good. At first I was like, it's in thebsupplied pinout dude! Then reeled it in and reminded myself that you're doing the work and were appreciative of it. Lemme know how I can help.
Re: Hellen 121 ME7 for VAG PnP ECU
Posted: Mon Mar 08, 2021 4:09 pm
by deaner
Anything new on these bad boys? I've just recently got a 1.8t running on a Proteus. Would love to tinker one of these when available!
Anything new on these bad boys? I've just recently got a 1.8t running on a Proteus. Would love to tinker one of these when available!
We are probably at least a month away from ordering a batch of Hellen 121, at the moment troubleshooting Hellen72 which has a lot shared with this one.
Re: Hellen 121 ME7 for VAG PnP ECU
Posted: Mon Mar 08, 2021 5:07 pm
by deaner
Awesome! Great to hear and I look forward to it!
Re: Hellen 121 ME7 for VAG PnP ECU
Posted: Mon Mar 08, 2021 10:31 pm
by AndreyB
I am super confused about wideband pinout, looking for help.
Looks like heater low side control is ECU pin 5. Looks like ECU pins 70 and 71 are doing something not sure what.
Looks like heater +12 power does not go to ECU but goes into harness towards one of the relays.
Looks like I am missing two more wires and confused about which ECU wires goes into what WBO pin?
Hold on, is it 4.2? All of these 121 pins are 4.2 or some are 4.9?
They can vary. Me7.5 is 4.2 while me7.1 is 4.9. All me7.5 1.8ts are 4.2, while the 3.2 VR6 is 4.9, though both sharing the same 121 pin connector. Pretty sure the pinouts are the same though. I'll check the ecu pinouts between me7.5 and me7.1 when I get home later. I'm only familiar with the 3.2 vr6 and 1.8ts, so I dont know about other engines that use 121p connectors.
They can vary. Me7.5 is 4.2 while me7.1 is 4.9. All me7.5 1.8ts are 4.2, while the 3.2 VR6 is 4.9, though both sharing the same 121 pin connector. Pretty sure the pinouts are the same though. I'll check the ecu pinouts between me7.5 and me7.1 when I get home later. I'm only familiar with the 3.2 vr6 and 1.8ts, so I dont know about other engines that use 121p connectors.
The pinout almost HAS to be the same - the ECU is probably a Bosch CJ125 wideband interface chip inside, which supports both sensors with (afair) a single resistor change.
The pinout almost HAS to be the same - the ECU is probably a Bosch CJ125 wideband interface chip inside, which supports both sensors with (afair) a single resistor change.
I generally try not to assume anything lol. Checked the pinout for my other pnp standalone ecu that works with both my 1.8t and my 3.2(bank 1), WBO2 ECU pinout is the same.
Re: Hellen 121 ME7 for VAG PnP ECU
Posted: Wed Mar 10, 2021 3:27 pm
by MHTSOS
I had once repaired an ECU from a 1.8t with an LSU 4.2 and it used CJ110 ic that is the same thing as CJ125 but only supports LSU4.2. So it seems they don't all use CJ125 for both types of sensors.
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I had once repaired an ECU from a 1.8t with an LSU 4.2 and it used CJ110 ic that is the same thing as CJ125 but only supports LSU4.2. So it seems they don't all use CJ125 for both types of sensors.
Στάλθηκε από το CLT-L09 μου χρησιμοποιώντας Tapatalk
Ah right - forgot about the CJ110. But either way, it's probably the same pinout on the ECU.
Re: Hellen 121 ME7 for VAG PnP ECU
Posted: Sat Apr 17, 2021 2:51 pm
by nyl
Hey,
thanks AndreyB for pointing this thread out
I will be running RusEFI on a golf mk2 with 1.8T engine swap 1.8T AUQ, and I also building a skoda octavia with 1.8t ARX but with Ignitron ECU ME 7.5 Plugnplay (both engine share same pinout from what i see)
You can find all pinouts based on ENGINE codes inside Ignitron setup wizard
AUQ/ARX Inputs:
image.png (34.82 KiB) Viewed 19312 times
AUQ/ARX Outputs:
image.png (30.51 KiB) Viewed 19312 times
===================================================================================================================
Also there is BAM engine code that has EGT sensor on PIN 61
BAM Inputs:
image.png (35.12 KiB) Viewed 19312 times
BAM Outputs:
image.png (30.73 KiB) Viewed 19312 times
Re: Hellen 121 ME7 for VAG PnP ECU
Posted: Thu Apr 22, 2021 8:23 pm
by Mohammed
here i'm sharing the ecu pin out and wiring digram for 1.8t AWT
Is this board supporting DBW and wideband o2 sensor
here i'm sharing the ecu pin out and wiring digram for 1.8t AWT
Is this board supporting DBW and wideband o2 sensor
I really have to ask you to invest more of your time and start doing more research please. In my opinion there are enough relevant links here for you to be able to answer this question on your own.
Re: Hellen 121 ME7 for VAG PnP ECU
Posted: Sun May 02, 2021 9:57 pm
by AndreyB
image.png (71.52 KiB) Viewed 19128 times
Just placed an order for rev A.
Five boards would go to @kon directly. @kon does not have a VAG, @kon would be making an adapter to run his e30 because why not right?
I am happy to sell three boards to anyone interested. Board + soldered MAX9926 + unsoldered 121 pin connector $149 shipped in US.
Lemme know how I can help.