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

[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

[stanley]

What car? Is GPS baudrate correct (in config.h)?

[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

[mpforum]

I'm also having the same problem so am keen to see what the story is.

[guanlelennon]

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?

[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?

Hi Stanley,
Thanks for your kind reply.

My car model is 2007 infiniti g35x.
Le Guan

[protomor]

Why are some of these posts blank? Did this get resolved? I'm having the exact same issue with the exact same setup.

[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?

[stanley]

Infinit G35 2007 does not use a protocol that our adapter supports.

[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.