FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

[ruda30]

You have to remove R14 / Musisz usunąć R14

Ahoj a mužeš mi poslat nějake schema zapojeni prosimtě nechci zapojovat a odpojovat na slepo dik

[BestiaRO]

Hi,

i have an ELM 327 1.5a and i can't connect to body,service etc
on engine is working perfect

if i will remove R04 everything will work ?

res.JPG (540.07 KiB) Viewed 8132 times

[Zwierzak]

You have to remove R14 / Musisz usunąć R14

R14 or R04 ???

As I can see there R14 must be removed

[khropek]

I have ELM327-USB V3.0 interface like picture in this post viewtopic.php?f=5&t=1493&start=120

I have Alfa Romeo 147 1.9JTD 115KM 2001 and I can connect with ECU but I can`t change injector code.

Code: Select all

ECU ISO Code: FD 86 13 80 6B
2011-10-22 12:05:40
CONNECTED TO: 
ALFA 147 1.9 JTD
Bosch EDC15C7 CF3/EOBD Diesel Injection (1.9, 2.4)
--------------------------------------------------------------

ECU ISO code: FD 86 13 80 6B
FIAT drawing number: 46784814   
Hardware number: 0281010332 
Hardware version: 00
Software number: 1037354624 
Software version: 7400
Homologation number: 937A4A
ECU programming date: 02/19/2001

EXECUTING ADJUSTMENT...
Injector class (All)
Old value: 
New value: Class 2
FAILED TO EXECUTE

[BestiaRO]

nobody?

[amiko]

nobody?

Not sure.
You have different board.

[ruda30]

You have to remove R14 / Musisz usunąć R14

R14 or R04 ???

As I can see there R14 must be removed

Ahoj odstranim R14 a co dal musim tam něco přidělat nebo ne

[ruda30]

Hi Yani and all,
My bad interface looks like this. Not sure which version it is. So, do i need to remove R14 and solder 100 ohm resistor and 560pf capacitor like what 1st post did to cure CAN issue?

yincar

ELM_top.jpg

Ahoj prosimtě mužeš mi poslat detalnějši připojeni capacitoru a resistoru Děkuji

[Darren_W]

Hello Friends.

Lots of very interesting posts about interfaces which are not working correctly.

Can some one give us a link for a known good tested interface / supplier ?

Many Thanks

Darren

[pls]

Hello,

Another cheap 'Chinese clone', from eBay (UK seller, not china or HK), received 3 days ago.
It was sold as ELM 327 1.4 'with a genuine ELM chip'.
(For my personal information, I would really like to recognize a genuine ELM chip from a fake one)

Actually everything is working well FES wise, which makes me think it is actually an genuine ELM1.4
- NO communication problems, all ECU are recognized.(Airbag and steering not tested, pins 1-7-9 not soldered yet)
- NO problem to get access to service reset.
- NO installation problem. Just the drivers for FTDI USB to install.

P1090438_redim.JPG

P1090441.JPG

P1090442.JPG

On the last pic we can see the 100 Ohm resistors (R25/R26) for CAN H/L lines with associated capacitor (C14/C15)
Same combo shown by members in the last posts.

Hope it can help you to find the correct interface

Best regards
Sébastien

Hi,

it seems I do have this one interface. I did soldered additional pins. So, at this time I'm able to connect to engine ECU and ABS in my Alfa 147. Unfortunately I cannot connect to anything else.

This is result of Interface scan

Code: Select all

Scanning ...

ELM 327 interface found at port COM2, speed 38400bps
This interface is compatible with ELM 327 1.3! Should connect properly with all CAN modules.
Latency Too High!!!

This is results of interface test

Code: Select all

COMMAND: ATZ
RESPONSE: ATZ ELM327 v1.4a >
COMMAND: ATI
RESPONSE: ATI ELM327 v1.4a >
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: ERR94 >
WARNING: This interface is not compatible with ELM 327 1.3! Will not connect to any CAN module.

Can anyone help?