RaceChrono not Connecting to BT OBD-II Device

jrodvball8

My Setup:
-Phone: Google Nexus 5
-RaceChrono v2.90 (Android)
-Car: BMW E46 M3

My procedure before beginning a track session:
1. Start car (OBD-II device is powered at this point)
2. Launch RaceChrono app on phone
3. Press Start

It always connects to my external BT GPS without a problem so I reliably have that data for my sessions. It is never getting OBD-II data. The OBD-II device is paired with the phone and the phone sees the device. RaceChrono lists Device #1 as my BT GPS and Device #2 as my OBD-II device. When I first tried RaceChrono I was able to get OBD-II data so I do not know how to go from here.

Would you please be able to help me diagnose the problem?

Thanks,
Jared

aol_of_RaceChrono

On some Chinese cheap OBD-II readers you need to manually configure the protocol, as they seem to "hang" when connecting to non-CAN-bus car. There is an expert setting on RaceChrono v3.10 to configure the OBD-II protocol manually. I'm currently rolling the new version to production so you might have to wait until tomorrow to get it.

To make sure you're experiencing this specific problem, you can turn on RaceChrono > Settings > Expert settings > Save device output. Then run a new 2 minute session with OBD-II connected to the car. Then you should have device_output_*.obd file in the new session's folder. Copy paste that here so we can see what's wrong.

jrodvball8

Hi, this is one of the Chinese obd-2 devices, I hope the raw output helps! Thanks for your help.
ATZ


ELM327 v1.5

>ATE0
OK

>OK

>SEARUNABLE TO CONNECT

>SEARCUNABLE TO CONNECT

>SEARCHUNABLE TO CONNECT

>SEARC41 00 BF 9F 00 00

>41 00 BF 9F 41 80 00 00
>41 0C 0D D8
>41 0C 0D A8
>41 0C 0D
>41 0C 0D
>41 0C 0D 84

ELM327 v1.5

>ATE0
OK

>OK

>SEAR41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F 91
41 00 80 00 00 00

>41 00 BF 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00
>41 00 BF 9F 41 00 80 00 00 00

>41 00 BF 9F 41 00
>41 00 BF 41 00


ELM327 v1.5

>ATE0
OK

>OK

>SEARCUNABLE TO CONNECT

>SEARCHUNABLE TO CONNECT

>SEARCUNABLE TO CONNECT

>SEARC41 00 BF 9F
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F
41 00 80 00 00 00

>41 00 BF 9F
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF 9F 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F 91
41 00 80 00 00 00

>41 00 BF 941 00
>41 00 BF 9F 41 00
>41 00 BF 9F 41 00

>41 00 BF 9F F9 41

>41 00 BF 9F 41

>41 00 BF 9F F9 41 00
>41 00 BF 9F 41 00
>41 00 BF 9F F9 41 00
>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9
41 00 80 00 00 00

>41 00 BF F9 91 41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F
41 00 80 00 00 00

>41 00 BF 9F
41 00 80 00 00 00

>41 00 BF 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF
41 00 80 00 00 00

>41 00 BF 9F 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00

>41 00 BF 9F 41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F9 91
41 00 80 00

>41 00 BF 91 41


ELM327 v1.5

>ATE0
OK

>OK

>SEARC41 00 BF 41 00 80 00 00 00

>41 00 F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 91
41 00 80 00 00 00

>41 00 BF 9F
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF 9F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF 9F 9 91
41 00 80 00 00 00

>41 00 BF
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 41 00 80 00 00 00

>41 00 BF 9F 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF 9F F9
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 B9F F9 91
41 00 80 00 00 00

>41 00 BF 9F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 00 BF F9 91
41 00 80 00 00 00

>41 00 BF 9F F9 41


ELM327 v1.5

>ATE0
OK

>OK

>SEARUNABLE TO CONNECT

>SEARCUNABLE TO CONNECT

>SEARCUNABLE TO CONNECT

>SEARCH

aol_of_RaceChrono

Hi, now that there is RaceChrono v3.13, please update to that, and try selecting ISO 9141-2 from OBD-II expert settings. Not sure it helps though, the output seems partially invalid, "SEARCUNABLE TO CONNECT" error message for instance... Not all of the cheap knockoff readers will work, so you might have to buy another one.

jrodvball8

Thanks, I will try that new ISO 9141-2 setting. The SEARCUNABLE TO CONNECT may be because I didn't have my external GPS around when I did this experiment.

aol_of_RaceChrono

The output is only from the OBD-II reader, so the external GPS doesn't affect this log. Let me know wether the expert setting helps.

jrodvball8

Here's the new log. I think I'm in good shape now, if you would please confirm?
ATZ


ELM327 v1.5

>ATE0
OK

>OK

>SEARCGUNABLE TO CONNECT

>SEARCUNABLE TO CONNECT

>SEARCHUNABLE TO CONNECT

>41 00 BF 9F
41
>41 00 BF 41 00 80 00
>41 05 61
>41 00 BF 9F 41 00 00 00
>41 05 61
>41 00 BF 9F 41 00 00
>41 05 61
>41 05 61
>41 00 BF 9F 41 00 00
>41 05 61

>41 00 BF 9F

ELM327 v1.5

>ATE0
OK

>OK

>SEARCUNABLE TO CONNECT

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 20 80 00 00 00

>41 0C 23

>41 11 0C

>41 0C 29 A0

>41 11 0C

>41 0C 2E B0
>41 11 0C

>41 0C 31 F4
>41 11 00

>41 0C 1D F
>41 11 0A

>41 05 6E
>41 0C 22 4C
>41 11 00
>41 0C 21


ELM327 v1.5

>ATE0
OK

>OK

>SEARCH
UNABLE TO CONNECT

>SEARCUNABLE TO CONNECT

>SEARCUNABLE TO CONNECT

>SEARCNG...
UNABLE TO CONNECT

>SEARC
UNABLE TO CONNECT

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 20 80 00 00 00

>41 0C 22 E0

>41 11 00

>41 0C 23

>41 11 00

>41 0C 23 20

>41 11 00

>41 0C 23

>41 11 00

>41 0C 22 C4

>41 11 00

>41 05 7B

>41 0C 22 14

>41 11 00

>41 0C 21 24

>41 11 00

>41 0C 20

>41 11 00

>41 0C 20 50

>41 11 00

>41 0C 1F D8

>41 11 00

>41 0C 1F 70

ELM327 v1.5

>ATE0
OK

>OK

>SEARCHUNABLE TO CONNECT

>41 00 BF 9F F9 91
41 00 80 00 00 00
>41 20 80 0

>41 20 80 00 00 00

>41 0C 11

>41 11 00

>41 0C 13 34

>41 11 00

>41 0C 15 C8

>41 11 00

>41 0C 17 60

>41 11 00

>41 0C AC

>41 11 00

>41 05 7B

>41 0C 14 F8

>41 11 00

>41 0C 13 58

>41 11 00

>41 0C 14 F4

>41 11 00

>41 0C 16 D0

>41 11 00

>41 0C 19 D0

>41 11 00

>41 0C 1B 90

>41 11 00

>41 0F 55

>41 0C 1B

>41 11 00

>41 0C 19 04

>41 11 00

>41 0C 17 28

>41 11 00

>41 0C 1

>41 11 00

>41 0C 13 68

>41 11 00

>41 0C 11 FC

>41 11 00

>41 05 7B

>41 0C 13 1C

>41 11 00

>41 0C 15

>41 11 00

>41 0C 16 70

>41 11 00

>41 0C 16 60

>41 11 00

>41 0C 1

>41 11 0F

>41 0C 1A D0

>41 11 28

>41 0F 54

>41 0C 2F DC

>41 11 2B

>41 0C 3E F8

ELM327 v1.5

>ATE0
OK

>OK

>SEARCUNABLE TO CONNECT

>SEARCUNABLE TO CONNECT

>SEARCHUNABLE TO CONNECT

>41 00 BF 9F F9 91
41 00 80 00 00 00

>41 20 80 00 00 00

>41 0C 2F

>41 11 28

>41 0C 31 20

>41 11 28

>41 0C 32 44

>41 11 23

>41 0C 33 4

>41 11 1E

>41 0C 34 04

>41 11 1C

>41 05 7E

>41 0C 35 14

>41 11 14

>41 0C 35 9C

>41 11 11

>41 0C 35 B8

>41 11 0F

>41 0C 35 B4

>41 11 07

>41 0C 35

>41 11 02

>41 0C 35 58

>41 11 05

>41 0F 51

>41 0C 34 EC

>41 11 05

>41 0C 34 DC

>41 11 05

>41 0C 34 EC

>41 11 05

>41 0C 34 E8

>41 11 07

>41 0C 34 F8

>41 11 0A

>41 0C 35 14

>41 11 0A

>41 05 7E

>41 0C 35