FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

[mikroel]

hi guys,

my ELM wifi interface has just stopped working
Now I can't connect to my car Alfa Romeo 147 JTDm.
WiFi connection working well between PC and Interface ,I can see ELM WiFi network ,I can connect to it and I can communicate with interface

Testing is OK

COMMAND: ATZ
RESPONSE: ATZ

ELM327 v1.5

>
COMMAND: ATI
RESPONSE: ATI

ELM327 v1.5

>
COMMAND: ATE0
RESPONSE: ATE0

OK

>
COMMAND: ATL0
RESPONSE: OK

>

COMMAND: ATH0
RESPONSE: OK

>
COMMAND: ATSPC
RESPONSE: OK

>
COMMAND: ATS0
RESPONSE: OK

>
COMMAND: ATCAF0
RESPONSE: OK

>
COMMAND: ATCFC0
RESPONSE: OK

>
COMMAND: ATCRA 7B0
RESPONSE: OK

>
COMMAND: ATSH 7B0
RESPONSE: OK

>
COMMAND: ATAT1
RESPONSE: OK

>
COMMAND: ATST41
RESPONSE: OK

>
COMMAND: ATBI
RESPONSE: OK

>
This interface is compatible with ELM 327 1.4! Should connect properly with all CAN modules.

All LEDs are blinking but i can't to connect to ECU !!!! or any other module !!!!
I have measured voltage between PIN7 and ground ,it is 12V and when i send command to ECU it dropped shortly and again come back to 12V.
Also i have measured voltage between CAN H and CAN L it was 0v and i can see voltage changing .

I have measured all voltage on the PCB and it seems ok

Few days ago everything worked well and i was enable to connect to every module including engine in my car.

Thanks in advance for any idea.

[brian2oconer]

I have also problem with conecting to CAN.


COMMAND: ATZ
RESPONSE: +CONNECTING<<08:D8:34:41:7B:A9
?

>

COMMAND: ATI
RESPONSE: NECTED
?

>

COMMAND: ATE0
RESPONSE: ATZ



ELM327 v1.5

>

COMMAND: ATL0
RESPONSE: ATL0

OK

>

COMMAND: ATH0
RESPONSE: ATH0

OK

>

COMMAND: ATSPC
RESPONSE: ATSPC

OK

>

COMMAND: ATS0
RESPONSE: ATS0

OK

>

COMMAND: ATCAF0
RESPONSE: ATCAF0

OK

>

COMMAND: ATCFC0
RESPONSE: ATCFC0

OK

>

COMMAND: ATCRA 7B0
RESPONSE: ATCRA 7B0

OK

>

COMMAND: ATSH 7B0
RESPONSE: ATSH 7B0

OK

>

COMMAND: ATAT1
RESPONSE: ATAT1

OK

>

COMMAND: ATST41
RESPONSE: ATST41

OK

>

COMMAND: ATBI
RESPONSE: ATBI

OK

>

WARNING: This interface is not compatible with ELM 327 1.3! Will not connect to any CAN module.




Scanning ...

Engine
Bosch Motronic ME7.3H4M EOBD Injection
ISO Code: 7C 86 3D 02 16

COMPLETED

Code: Select all

https://lh6.googleusercontent.com/jbUQb9vBA5hjDnA2ZGQJb1cgNpc0hmepeQKJelaDF1l6GGqk8m4drFiGn6aKjze96gwYweJWf3vcK_I=w1242-h930-rw[/img]
https://lh6.googleusercontent.com/maR0QDatgP9O3JLXOo4t_0BEnNEdrLrlFpPJyPii10nqEEA2-kA6eYPJ6h10m0Yxu57yUM7ShC-Hh1w=w1242-h930-rw
https://lh5.googleusercontent.com/lGf8Vn05dqQ2BhE0i9cKj-vsmiDQVXrrAahbUnXuJ11oUylIT78c5dCdQT7CFDSZFQ4K3TifW_g4BUY=w1242-h930-rw

[Revilo]

Hi Guys, I need your help and expertise, i bought this ELM327 V1.5a from eBay and it keeps coming up with time out errors, I have opened it up but it does not look like any of yours so please would you tell me which resistor to remove ( my car is a Fiat Bravo 2007 1.4 )
[img]https://postimg.org/image/my1p1onqf/][img]https://s15.postimg.org/my1p1onqf/IMG_4666.jpg[/img]

[img]https://postimg.org/image/4wik3vtpj/][img]https://s15.postimg.org/4wik3vtpj/IMG_4662.jpg[/img]

[img]https://postimg.org/image/96x7zgysn/][img]https://s15.postimg.org/96x7zgysn/IMG_4653.jpg[/img]

[zzitop]

Hello shotgun

Because it is now so that many ELM no longer function even in Multiecuscan and this is due to the software on the Pic of the board

With many of the interface worked smoothly still 2 years ago
no longer running MES
This has nothing to do with ISO 15765, 9141, 14230, etc.

But the diagnostic software is no longer using the software on the interface (PIC) work together

Whether this is your problem, I can not say


Greeting Eddy

Hallo Eddy!

Ich verstehe es, glaube ich, nicht 100%... Entschuldigung....

Kannst du bitte es auf Deutsch schreiben? Ich bin einfach interessiert, ob Diese ELM327 mit PIC18F2480 sicherlich gut sind?

Vielen Dank für deine Antwort...

Grüsse aus Slowenien

[Alfaeddy]

Hallo

Da ja fast alle ELM die am offenen Markt zu kaufen sind
chinesische Kopien sind.
Und auch die Chinesen diese immer weiter Entwickeln ist es leider dazu gekommen
das die meisten ELMs die seit knapp 2 Jahren angeboten werden nicht mehr mit Multiecuscan
oder auch AlfaOBD kompatibel sind.

Wenn es im Angebot heißt "Softwarer Version v2.1 " sind diese nicht mit Multiecuscan oder AlfaOBD kompatibel
Aber auch wenn Version v1.5 angegeben wird ist man nicht sicher das dieses ELM funktionieren kann

https://play.google.com/store/apps/deta ... fier&hl=de

Ich habe vor einiger Zeit eine APP gefunden ( ELM Indentifier)mit der kann man prüfen ob das Bluetooth oder Wifi ELM mit Multiecuscan
funktioniert.

Gruß Eddy

[zzitop]

Alles klar...

Danke schön...

[zzitop]

Based on all information I think, that is correct interface to made modification to work with Multiecuscan:

http://www.ebay.com/itm/ELM327-V1-4-FTD ... 2227492451

Regards

[Alfaeddy]

Hallo

Das sollte passen nur weiß ich bei diesem Angebot nicht ob ein Brückenwiderstand nicht die CAN Bus Protokolle behindert.


Aber bei diesem Angebot

http://www.ebay.de/itm/152303738760?_tr ... EBIDX%3AIT

bin ich sicher das es funktioniert.

Gruß Eddy

[diablotic]

Hi I have problem with my ELM, I believe I need to remove some stuff from it. There is 213 pages in this thread but could someone help me which resistors/capacitors I need to remove in order to be able to use low CAN?

IMG_20161130_130142.jpg (1.11 MiB) Viewed 6367 times

IMG_20161130_130134.jpg (1.01 MiB) Viewed 6367 times

[diablotic]

Figured it out - R04 with number 121 on top.