FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

[veskoy]

I noticed something. Since I removed the resistor when I start torque when it is trying the different protocols the fuel arrow and the engine temperature arrow go up and down, the steering light appears on the dashboard and things like that.
However it doesn't connect with none of the protocols. Any ideas?

[Alfaeddy]

Hello Moxai
With this interface you can read without modifying the protocol SAE J1850
The changes described here have nothing to do with this kind of protocol.

What car do you want to read?
Alfa Fiat Lancia certainly not etc.



Greeting Eddy

[Alfaeddy]

Hello Veskov

As I've already written.
For your Punto no resistor must be removed to get to your engine control unit or to read it

This should work without modification.

So I think there is a setting error or a problem with the connection (contact failure)


Greeting Eddy

[moxai]

Hello Moxai
With this interface you can read without modifying the protocol SAE J1850
The changes described here have nothing to do with this kind of protocol.
What car do you want to read?
Alfa Fiat Lancia certainly not etc.
Greeting Eddy

Hello Eddy,
According to this article http://www.iobd2.org/make-elm327-work-j1850-pwm/
v1.5 elm327 interfaces (cheap clones from chine) have wrong circuit implementation, and as such doesn''t work in PWM mode.
Even Torque Pro app warns me, that my interface will not work in this mode. According to the article it is possible to mod the circuit, but the descreption is about another version of the adapter. I've read that it should be possible to mod my version (super-mini), but due to its SMT circuity, it is more complicated.

[veskoy]

Alfaeddy I also want to read my Electric Steering errors not only engine ones. I tried many different android apps but since I removed that resistor I can't connect with none of them. Today I will try with a laptop and multiecuscan and I hope it connects successfully.

Could you please tell me what the resistor was so I can buy and solder a new one in case it doesn't work with multiecuscan?

[veskoy]

Today I tested it with multiecuscan. I couldn't connect as well. This is what I got when I tested the interface. Why it doesn't work ?

Code: Select all

COMMAND: ATZ
RESPONSE: ELM327 v2.1>

COMMAND: ATI
RESPONSE: ATIELM327 v2.1>

COMMAND: ATE0
RESPONSE: ATE0OK>

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.

[zippo]

Dear,
whick resistor i need to remove on the interface:
http://www11.zippyshare.com/v/vQDem6M8/file.html

Thanks!

[DaveM]

Frohes neues Jahr

Es ist schwierig noch Tips zu geben da du schon vieles Versucht hast.
Nur eines fällt mir noch ein

Hast du es mal bei laufendem Motor versucht eine Verbindung herzustellen ?

Gruß Eddy

Hallo Eddy! Ich habe eine USB ELM327 gekauft und alles funktioniert jetzt!! Danke, Mach's gut!!

[Alfaeddy]

Hallo Dave

Also war es doch der falsche Widerstand der entfernt wurde.


Danke für die Rückmeldung


Grüße Eddy

[BR-Scan]

Hello,

I recently bought a couple of ELM327 BT interfaces that did not connect to any ECU at all when using MES. Not even with simple K-line.

Oddly enough, it would work fine with other ELM based sw such as Scan-XL.

Any help would be much aprecciated!

This is the PCB: