FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

[aaa456]

Hi Alfaeddy,

well, that's the problem. Look at the first picture below.

Is this pin marking correct?:

OBDConn.jpg (70.17 KiB) Viewed 5902 times

And this is my adapter (PINs are marked as on picture above):

IMG_20130803_112507_mod.jpg (47.16 KiB) Viewed 5902 times

Is this correct pin-out?

Thanks.

M.

[Alfaeddy]

Hello aaa456


The adapter (2nd picture) must go to the pin 1 on the connector pin 6 of the female connector
And pin 9 of the connector going to the pin 14 of the female connector

Is this so? on your adapter?

Your labeling of the pins is correct

Look again at the picture

Greetings Eddy

A3.jpg (26.44 KiB) Viewed 5899 times

[Alfaeddy]

Hello aaa456

Your image here have once more shown how the CAN bus must be Connections

Greetings Eddy

Adapter A3.jpg (30.99 KiB) Viewed 5899 times

[aaa456]

Hi Alfaeddy,

yes, that's how it is connected. I was wrong, adapter is connected correctly (I was probably looking on it upside down ). Except one difference. According the scheme pins 4 and 5 should be connected together (short-circuit) but in my adapter they are just connected 4-4 and 5-5 (and not between pins). But maybe this is not a problem ...

So I really don't know where could be a problem ... It's true that ELM interface connected directly to OBD in car is tighter than adapter (very loose). I tried to push it and hold it while I was trying to scan modules but no change ...

Thanks.

M.

[Alfaeddy]

Hi Alfaeddy,

yes, that's how it is connected. I was wrong, adapter is connected correctly (I was probably looking on it upside down ). Except one difference. According the scheme pins 4 and 5 should be connected together (short-circuit) but in my adapter they are just connected 4-4 and 5-5 (and not between pins). But maybe this is not a problem ...

Code: Select all

Hello M.

Right, pins 4 & 5 are not a problem because both pins are competent for the mass
 
And the pin 16 for the power supply interface is! Is this so? on your Adpter?

otherwise I would not remember where your connection error

Greetings Eddy

So I really don't know where could be a problem ... It's true that ELM interface connected directly to OBD in car is tighter than adapter (very loose). I tried to push it and hold it while I was trying to scan modules but no change ...

Thanks.

M.

[aaa456]

Hi Alfaeddy,

yes, pin 16 is connected correctly (pin 16 to pin 16). I have to check it even more deeper ....

Thanks.

M.

[yoko]

I removed the resistance as shown but i still can't get more than the engine when i scan

IMG_2464.JPG (179.73 KiB) Viewed 5859 times

[Alfaeddy]

Hallo Yoko

Du hast unterschiedliche ELM Interface ??? ein blaues und dann ein schwarzes

Dann auch verschiedene Autos ?? Linea und Grande Punto

Der Linea hat für ECU , ABS keinen CAN Bus , daher kann der Brückenwiderstand nicht der Fehler sein
Für das ABS benötigst du den Adapter A1

Die anderen Steuerungen werden über CAN Bus gelesen , bei denen kann es der Brückenwiderstand sein der Probleme macht

Dann einen Grande Punto , bei diesem werden alle Steuerungen über CAN Bus gelesen
für alle Steuerungen außer ECU , Lenkung und ABS wird der Adpter A3 benötigt.

Ich denke du solltest mal mit diesem Treiber versuchen.

http://www.ftdichip.com/Drivers/VCP.htm

Und überprüfe noch mal die Einstellungen und stelle die Wartezeit der COM ports auf 1 (statt 16)

Gruß Eddy

[yoko]

the first elm was borrowed from a friend then i bought one because i didn't want to open his interface
my car is a linea not a grande punto
i will update my drivers and will let you know

btw i can't read German

[Greatjoe]

Hi,

I have tried looking for my ELM 327 bluetooth module on this tread but can't seem to find it (The thread is so long now).

Here are photos of the adaptor, Does anyone know what resistor I need to remove on this in order to access the body computer?

Thanks