dirtavg
07-12-2009, 11:11 AM
I am having a problem with no power to the OBDII port. The lighter fuse is fine and the only way to clear codes is with Banks. Any ideas?
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caddychev87 07-13-2009, 01:05 AM check your wiring plug in the back of your instrument cluster... having similar problem but my cluster is junk... unplug it and plug it back in... not shure if that will affect it but worth a try dirtavg 07-16-2009, 03:38 PM I think i found the problem. I was looking closer at the OBDII port and the wires were taped into for the use of a trailer brake. I dont know why they tapped in to these wires. Is any of your trailer brake controilers like this? caddychev87 07-16-2009, 04:10 PM nope, mine is hooked directly into the trucks trailer brake control harness that is installed from the factory Coolbreeze 07-16-2009, 05:32 PM You should never have to "tap" into any wires for a brake controller as you can use a connector to get (12V) and "send" all the signals you need. Furthermore if some company is selling a brake controller with out a connector for a Chevy truck well then don't be buying from that company. dirtavg 07-16-2009, 09:52 PM Does any one know where the OBDII wires go to? caddychev87 07-16-2009, 10:50 PM haha, they go all over the place. a few to mention are the ecm, tcm, and pcm dirtavg 07-17-2009, 08:09 AM What about the power wire? dirtavg 07-17-2009, 03:11 PM Does anyone know where i can find a wiring diagram for the OBDII port. Thanks boonbltz 07-17-2009, 04:50 PM check the fuse for the cigarette lighter this is a prob that i had good luck dirtavg 07-17-2009, 07:24 PM I tried that. The power wire has to be broken somewhere. Does that wire go to the fuse box under the dash or under the hood? | ||