FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

[Alfaeddy]

Hello Fefe


Make please times a test in settings / interfaces / Test

And adjust the screen here

To read the Guilettas as described yellow Adapter

and for the Stilo still the green adapter

And you need for Airbag a KKL Interface


Greeting Eddy

[legone]

Hi

I am the happy owner of an Alfa 159 2.2 JTS.
I bought a ELM327 Wifi. I can only connect to the engine module for the moment.
I would be able to reset my Service indicator. And to do that I'd like to connect to the Service module.

I bet it means that I have to remove a resistor.
There are so many board layouts that I did not manage to guess which one.


Full res here: http://www.googledrive.com/host/0B7dgk3 ... lZ0ai1pN2c

I have a suspicion on the 121 resistor at the bottom and center of the image.

Could you be so kind to confirm thats the one to remove?

Best regards
Fabrice

[Alfaeddy]

Hello Fabrice

Yes this is the bridge resistor that must be removed !!

Could you please have a link of this interface here Set
and a screen of the test in MES / Settings / Interfaces ??

Because there are more and more new ELM interface on the market
who can not work with MES.

Meanwhile, it is difficult to suggest interface.

Greeting Eddy

[zapdus]

Hello, i have a 2009 alfa romeu mito and i can connect with engine, abs, etc (high speed can)
But i can't connect to low speed can
I think i most remove the bridge resistor
But i can't find where it is
Can any1 help me?

Here is my PCB

Thank you!

It is a ELM327 USB V1.5

[Alfaeddy]

Hello

This interface we had been there several times
in red frame the bridges Resistor is highlighted


Greeting Eddy

6126927B markiert.jpg (127.37 KiB) Viewed 7662 times

[legone]

Hello Fabrice
Could you please have a link of this interface here Set
and a screen of the test in MES / Settings / Interfaces ??

Hi

First, thanks for the answer !

I bought the interface here:
http://www.dx.com/p/elm327-obd-wi-fi-au ... lue-321243
For the moment I can tell you that MES reports that it connects successfully to the ELM. I can connect to the Engine module and read / clear the errors. Nothing else though (with the resistor).
I can also connect with my iPhone using some free OBD II utilities.

I'll make a snapshot of MES as soon as I try it again with the resistor removed (probably next week end).
And I ll also keep you posted if it works fine.

Best regards
Fabrice

[Herpez]

My elm327 is broken after i tried to fix it

Can someone recommend me a fully working elm327 device with bluetooth whithout the needed to a fix?

[Aliendex]

Hello guys,

I'm using a cheap chinese ELM 327 which doesn't work with MultiEcuScan even when it was original (with the resistor), this is the module:







As you can see i've already removed resistor R34 (120 Ohm) but i have the same error in MultiEcuScan.
With Torque, ScanMaster and PCMSCAn it's working fine.

Code: Select all

COMMAND: ATZ
RESPONSE: ATZ


ELM327 v2.1

>

COMMAND: ATI
RESPONSE: ATI
ELM327 v2.1

>

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: ?

>

COMMAND: ATCRA 7B0
RESPONSE: ?

>

COMMAND: ATSH 7B0
RESPONSE: ?

>

COMMAND: ATAT1
RESPONSE: OK

>

COMMAND: ATST41
RESPONSE: OK

>

COMMAND: ATBI
RESPONSE: OK

>

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

[Alfaeddy]

Hello

As you can see in the test screen, this is a software on the chip
V2.1

And the v2.1 does not run with MES or AlfaOBD

Why this is so I can not say

This would require more Yani can say.

Greeting Eddy

[Aliendex]

Hello

As you can see in the test screen, this is a software on the chip
V2.1

And the v2.1 does not run with MES or AlfaOBD

Why this is so I can not say

This would require more Yani can say.

Greeting Eddy

Thank you Eddy!!

In this case i will continue to use this module only with the software mentioned before (Torque, ScanMaster, PCMSCAN)

What version of elm 327 should I buy to make sure it's working correctly?

I have a Fiat Grande Punto 1.3 Mjet 66kW/90HP (2007) with a Marelli 6F3

P.s.: Do i need to re-solder R34 or I leave the module modified?