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kit #3, OBD-2 "UNABLE TO CONNECT"

Posted: Tue Mar 08, 2016 1:52 pm
by guanlelennon
Hi there,

I bought a kit#3 with UBX-G6010 and IIC adaptor. When I plug it into my 2007 infiniti, the LCD shows that the OBD-2 command cannot be sent (UNABLE TO CONNECT) and GPS fails to recognize. MEMS seems to work fine.

Attached is the screen I took.
Could anybody help me?

Thanks in advance.

Le Guan

Re: kit #3, OBD-2 "UNABLE TO CONNECT"

Posted: Fri Mar 11, 2016 6:11 pm
by stanley
What car? Is GPS baudrate correct (in config.h)?

Re: kit #3, OBD-2 "UNABLE TO CONNECT"

Posted: Sat Mar 12, 2016 1:56 am
by guanlelennon
Hi Stanley,
Thanks for your kind reply.

My car model is 2007 infiniti g35x.
The baudrate is set as default, which is 115200 bps.
Here is the GPS configuration:
#define USE_GPS 1
#define GPSUART Serial2
#define MAX_GPS_PROCESS_TIME 50
#define GPS_DATA_TIMEOUT 2000
#define GPS_BAUDRATE 115200

Attached please find the picture showing the wiring of device, as well as the model of the used GPS. OBD-2 adaptor is plugged in IIC interface and GPS is plugged in UART2, which is in the middle.

Thanks again.

Le Guan

Re: kit #3, OBD-2 "UNABLE TO CONNECT"

Posted: Mon Mar 21, 2016 5:32 pm
by mpforum
I'm also having the same problem so am keen to see what the story is.

Re: kit #3, OBD-2 "UNABLE TO CONNECT"

Posted: Sat Apr 02, 2016 9:45 am
by guanlelennon
mpforum wrote:I'm also having the same problem so am keen to see what the story is.


Have you solved the problem? Could you share your experience with me?

Re: kit #3, OBD-2 "UNABLE TO CONNECT"

Posted: Sat Apr 02, 2016 9:49 am
by stanley
I used to have a 2007 infiniti g35. I found its OBD-II is not very compliant. Have you tried on any other cars?

guanlelennon wrote:Hi Stanley,
Thanks for your kind reply.

My car model is 2007 infiniti g35x.
Le Guan

Re: kit #3, OBD-2 "UNABLE TO CONNECT"

Posted: Thu Dec 15, 2016 5:47 am
by protomor
Why are some of these posts blank? Did this get resolved? I'm having the exact same issue with the exact same setup.

Re: kit #3, OBD-2 "UNABLE TO CONNECT"

Posted: Sat Jan 07, 2017 6:46 am
by ghelbig
I too have exactly the same problem.

Wire it up, turn it on, it displays "UNABLE TO CONNECT" three times - a light in the OBD-II adapter flashes just before each message.

It then goes to the (dead) main screen, waits a couple of seconds, then turns the screen off.

Please help?

Re: kit #3, OBD-2 "UNABLE TO CONNECT"

Posted: Sun Jan 08, 2017 11:21 am
by stanley
Infinit G35 2007 does not use a protocol that our adapter supports.

Re: kit #3, OBD-2 "UNABLE TO CONNECT"

Posted: Mon Jan 09, 2017 11:27 pm
by protomor
What protocol does it use? I wish there was a simple way to lookup what cars have what protocols. Googling around seems to come up with mixed results for every car I look at. My 2007 subaru for instance didn't work with the auto select. But if I force the right protocol (PROTO_KWP2000_FAST), it works perfectly fine.