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Does that extra harness stay wired into the vehicle or does it only get installed when you want to make changes. Actually, what's the reasoning for the extra harness? Does this equipment marry to the vehicle or can it be used on other vehicles as well?
The harness is called a security gateway bypass. There is a security gateway in between the OBD port and the canbus system, and also secures the radio from the canbus system separate from the OBD port so the vehicle can’t be hacked and controlled via the radio. The gateway will allow information to be presented to a scan tool from the bus, but not the other way around- so it needs to be bypassed for any changes to be made, or any fault codes to be cleared. It can be removed when done using it, and is not needed at all to just connect to modules and read them, only when an actual change is to be made. Example- everything trek97 has done above so far, the 12+8 bypass was not needed.
Each module (computer) on the truck is capable of storing it’s own fault codes. You would just connect to a particular module (body computer, engine, hvac, etc), and click on the check engine light icon in the bottom right corner, and read faults. Note- faults in the engine computer are usually the only faults that request the check engine light icon to illuminate in the instrument cluster screen.
Cool thank you very much. Do you by any chance have recommendations as to what equipment to use and where to get it? My main goal is to activate the window down feature with the key fob and to keep the fog lights on with the high beams. Thanks for all the info
Disabled, does that mean that with some digging it could be re-enabled or was it removed completely?
Thanks, I guess I will still have to us the remote start and A/C to cool off a sweltering truck before entry.
Where did you get your cord and is veepeak a well known obd2 Bluetooth adapter? I want to make sure I get the right stuff. Thank you.
There is a STAR case # for this issue. They looked it up when I had mine in for the same problem. My paperwork is at work so I don't have the number here with me. I found my Post about it:
I know this thread is really old, but I'm using it for guidance right now. I get as far as logging into google. When I click on upload to google drive, it says no data available. Any idea why this might be? A lot of the options seem to be gray instead of red. Seems like that's a problem. I keep looking at different options, settings, etc. and can't find an obvious issue. Any ideas? Thanks
