FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

Multiecuscan usage help and guides
effe75
Posts: 1
Joined: 26 Apr 2024, 16:20

Re: FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

Post by effe75 »

Hi Whiley I have a similar ELM327 cable. Which is exactly the resistor to remove? (I see no photo attached in your latest post). Thank you!
Tomfarnell1997
Posts: 1
Joined: 28 Apr 2024, 16:24

Re: FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

Post by Tomfarnell1997 »

Whiley wrote: 24 Apr 2024, 19:19 Sorted buzzed the board and found the 120 ohm resistor connected to 6 and 14, see picture attached, all works now and managed to do dpf reset and connect fully to ecu. I bought this kit off of amazon and for anyone who has this problem and has the red board see picture below of 120 ohm resistor to remove.
Hi Whiley, I have the same circuit board but I'm unsure what to do. There doesn't seem to be a photo attached. Please could you give a bit more advice? Cheers.
naminator2003
Posts: 1
Joined: 02 May 2024, 21:36

Re: FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

Post by naminator2003 »

For my ELM327 USB interface, the 120ohm resistor is located here:
https://ibb.co/0tth1wp

Encircled in blue. Usually between pins 6 and 7 of the CAN transceiver integrated circuit (8 pin SOIC, here named 1044)
Darkburrow
Posts: 1
Joined: 08 Jun 2024, 19:24

Re: FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

Post by Darkburrow »

Did i buy a Dud, this does not look right at all ? :/

Mine looks nothing like anyone elses on here, is mine a China-fake? It doesnt even say "ELM327" on it.

Image
Image
SME61
Posts: 1
Joined: 08 Jul 2024, 19:22

Re: FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

Post by SME61 »

Alfaeddy wrote: 11 Jan 2013, 22:14 Hello aurick86

Remove the red marked resistor on your board
and your interface is also capable of Multiecuscan CAN Bus

Greetings Eddy


DSC08811markiert.jpg
This helped me, mine board is red but resistor is the same.
Thank you very much. Fiat 500C sport 2014
Venigo
Posts: 1
Joined: 18 Jul 2024, 17:30

Re: FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

Post by Venigo »

Hi all,

Just registered on this forum to gather some more information about the ELM mod. Only... I can't find any information about the latest Chinese interface. It is the same pcb for the 1.5 and the 2.1 version. It doesn't connect with AlfaOBD / MES, other apps are working (even the elm identifier).

This is the board:
Screenshot_2024-07-18-19-34-47-946_com.miui.gallery.jpg
Screenshot_2024-07-18-19-34-47-946_com.miui.gallery.jpg (1.29 MiB) Viewed 8267 times
Screenshot_2024-07-18-19-35-06-251_com.miui.gallery.jpg
Screenshot_2024-07-18-19-35-06-251_com.miui.gallery.jpg (1.32 MiB) Viewed 8267 times
Any idea if there is any resistor that needs to be removed or is it not possible to apply the mod to this device?

Thanks in advance.
gerjsmit
Posts: 1
Joined: 11 Sep 2024, 11:55

Re: FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

Post by gerjsmit »

Hallo, may I ask as I am not an electronic boffin. You mentioned 2 resistors and 2 capacitors, but in your photos I only see one resistor and capacitor soldered together and the pins it is soldered to on the board are not that clear on the picture? Then it seems you removed R14 so that circuit will be open right? Kindly advise - much appreciated
proostjoost
Posts: 1
Joined: 10 Nov 2024, 14:00
Location: The Netherlands
Contact:

Re: FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

Post by proostjoost »

Thank you TS Yani!

I backtracked your steps and found the 120 ohm resistor on my PCB too, removed it, and now it works, even without the prescribed CAN termination. I will terminate the CAN lines properly before I attempt coding. Together with the PL2303 driver build by John Stevinson it is working now. I will proceed buying MEC registered.
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