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Old 04-20-2016, 02:20 PM   #2
Hart_Rod
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Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,865
Re: obd2 connector help

Quote:
Originally Posted by lilrobo View Post
guys i have a 55 with a 5.3 from a 06 truck and computer from 02 camero ,, all has been great , i have loaded tunes and played with it tons ,, i did a push button start and now i cant load a tune, it says cant connect and to check connection ,, i can scan and do log runs , so i think i am linking up to ecm ??
i have 4 wires
purple = data
black = ground = chassis
blk/wht = ground = signal
orange = battery
the ground check out i check with ohms all good , the orange is 12 volts hot all the time ,, how do i check the data port ? i dont understand nothing changes when i go in to acc mode . or what is suppose to happen that mode

thanks
It sounds like a wiring problem. Are you sure you didn't mess up the "data" wire when you installed your push button start?
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