Serial (DB9) to OBD2

Discussion about adapters and connections - usage, problems, solutions
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chimchim0217
Posts: 1
Joined: Fri Dec 28, 2018 5:09 pm
Vehicle: F150, 3.5 Ecoboost/370,2014

Serial (DB9) to OBD2

Post by chimchim0217 » Tue Jan 08, 2019 12:47 am

I've now tried 2 OHP WiFi adapters on my '14 F150 and on the iOS app and on FORScan running on Windows 10 I get the error "No ELM Connected". My Windows machine does still have a native serial connection on it so I'm curious if anyone uses a simple serial to OBDII cable? I'd assume to change between HS and MS CAN I'd simply change the Baud rate from 500 kbps to 125 kbps? Any feedback would be much appreciated.

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Andyfocus
Posts: 223
Joined: Sun Sep 16, 2018 1:35 pm
Vehicle: ford focus 1.0 ecoboost (100ps) 2017

Re: Serial (DB9) to OBD2

Post by Andyfocus » Sun Jan 13, 2019 8:48 pm

dont expect to be spoon fed you will learn nothing .
do search ,its a wonderful thing and saves everyone a lot of time .
i am the same as you just a forscan user still learning .

ThatOneDude
Posts: 109
Joined: Fri Jul 07, 2017 12:46 pm
Vehicle: 2007 Ford F-150 SuperCab 5.4L 3V 4WD

Re: Serial (DB9) to OBD2

Post by ThatOneDude » Wed Jan 16, 2019 6:41 am

If I understand correctly, the ELM327 chip does some translating, so the application would not work directly over a serial connection from the OBDII port to your computer.
1996 Lincoln Town Car (For Sale)
2003 Ford Crown Victoria Police Interceptor (Sale in progress)
2007 Ford F-150 SuperCab 5.4L 3V 4WD
2011 Ford Crown Victoria Police Interceptor

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