Monitoring OBDII Traffic

Discussion and research on OBDII integration, especially on OEM specific PIDs from Ford, GM, Chevrolet, BMW, Porsche, Audi, Toyota, Volkswagen, Mazda, Honda, Subaru, Mitsubishi and others.
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gizmodo
Posts: 138
Joined: Mon Aug 05, 2013 10:22 pm

Monitoring OBDII Traffic

Post by gizmodo »

I have a 2005 vehicle, that uses OBDII. I have the classic adapter and I can get the standard PIDs to show up in the RaceCapture software. I also have a DiabloSport Trinity that has access to the enhanced Chrysler PIDs. I have seen OBDII splitters, which makes me wonder if there's a way to hook the RCP and Trinity up at the same time and monitor the traffic so I could determine the IDs for those enhanced PIDs and move all my logging over to the RCP? A big benefit to this would be it would allow me to use the RCP as my dash with some added gauges the stock dash doesn't show.

I bought an OBDII splitter and tried plugging both devices in but that didn't work since both were requesting PIDs from the PCM. About a year ago Brent mentioned a passive mode for OBDII, but the classic adapter didn't support that.

brentp
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Post by brentp »

Yep! This will dump all of the CAN bus traffic seen by RaceCapture. It will show all conversation between systems on the same CAN bus:
https://wiki.autosportlabs.com/CAN_Bus_logger

Let us know what you find out with your research!
Brent Picasso
CEO and Founder, Autosport Labs
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gizmodo
Posts: 138
Joined: Mon Aug 05, 2013 10:22 pm

Post by gizmodo »

I am hooked up to OBDII through the classic adapter, no CAN bus on this car. Does this still apply?

brentp
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Joined: Wed Jan 24, 2007 6:36 am

Post by brentp »

Unfortunately, no. It would need to be CAN OBDII.
Brent Picasso
CEO and Founder, Autosport Labs
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