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Problem With OBD communication

Unread postPosted:Fri Jul 04, 2014 7:47 am
by Marcox81
Hi @all.

I've got the OBD2 KIT #1; all seems ok but the OBD doesn't connect;
I plug the usb or car AC > OBD blink blue for a second then stop on red > on the OLED:
"SDHC 8GB
OBD X
dfrobot X"

The OBD adapter is the "I2C Adapter"  and I've connected it to pin 4 (+) and 6 (-) of ICSP;
yellow > TX1; white > RX0 on Arduino

The TX led on arduino blink every 2 second but OBD is still in "X"

Any help?

Many thanks

Re: Problem With OBD communication

Unread postPosted:Mon Jul 07, 2014 8:25 am
by Marcox81
Updated config and changed in nanologger.ino the line 268 to "recover();" as suggested by Stanley.

Now I've another problem, the arduino connect to my Toyota yaris, but don't connect to my Ducati wirh Marelli ECU (IAW5AM), that use the ISO9141-2 protocols

This protocol is supported from the OBD, but it doesn't.

Any help please!

Re: Problem With OBD communication

Unread postPosted:Thu Oct 09, 2014 12:54 pm
by Vaso
[quote="Marcox81"]
Updated config and changed in nanologger.ino the line 268 to "recover();" as suggested by Stanley.

Now I've another problem, the arduino connect to my Toyota yaris, but don't connect to my Ducati wirh Marelli ECU (IAW5AM), that use the ISO9141-2 protocols

This protocol is supported from the OBD, but it doesn't.

Any help please!
[/quote]
Some Info about Ducati wirh Marelli ECU (IAW5AM):

Standard KWP2000, ISO 14230-4
Speed 38400bps
Startup sequence auto-reply to the ECU on power up a certain ISO hex code (55 B0 80 80 80 85) at a specific timing interval

Marcox81, did you solve your problem?

Re: Problem With OBD communication

Unread postPosted:Thu Oct 09, 2014 1:10 pm
by Marcox81
not yet.

Atm I can retrieve data, but in wrong format.
example:
RPM effective: 2000
Arduino: 334

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Unread postPosted:Sat Aug 27, 2016 1:41 am
by fblogin2016.com
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Re: Problem With OBD communication

Unread postPosted:Thu Sep 01, 2016 8:08 am
by rosymalhotra9
Impressive articel and wanna say thanks a lot for providing some info about OBD Communication. These are similar problems which can be happen any moment. thanks a lot for the perfect way to get rid from it. Thanks a lot. Meet Russian Amritsar Escorts

Re: Problem With OBD communication

Unread postPosted:Fri Nov 13, 2020 5:59 am
by sabrinagilbe
Thanks for the update and quick reply. Works like a charm! I'll be sure to keep an eye on this thread.