OBD II Problem!

[PSDfan99]

Ok, since my truck currently has no chip on it because Tony is tuning it for my new injectors and turbo, I decided to run my friend's Edge Evolution for a few days because he wasnt going to be driving. So he took the Evo off his truck and put it back to stock... and I went to go install the Evo on my truck and when I plugged the plug from the Evo into the OBD II port nothing happened. Usually once you plug it into the OBD port the Edge Evo screen will light up blue and begin its download process. I dont know what the heck is wrong with the OBD port on my truck, it was working fine about a week ago when I used the same Edge Evolution to clear some codes. The issue is with my truck, not the Edge.

Is there some kind of fuse that powers the OBD port or something that may be blown, it's really strange that my OBD II port isnt recognizing that the Evolution is plugged into it. I'm stumped?

[vitalidle]

Yeah I believe its the fuse for the cigarette lighter.

[Dirk]

Does pin 16 have power?

sorry for the crappy drawing, but I can't find a pic...

\ :::::::: / Bottom right pin in this pic.

[PSDfan99]

Originally Posted by vitalidle

Yeah I believe its the fuse for the cigarette lighter.

oh Sh*t that makes perfect sence... my cigarette lighter wouldnt work the other day when I went to plug my GPS in..... man I hope its that, I'm gonna run outside and check

[Raul@Stealth Automotive]

yah thats exactly what it is... mine did this as well

[PSDfan99]

Ok its fixed!!!! Thanks guys for your instant help. As soon as I looked in the owners manual for the cig lighter fuse it also listed "OBDII". One 20amp fuse later and we're loaded and rolling!

[vitalidle]

Good deal. I have a good one for you. My 95 wrangler the pcm is fed by the 20 amp dome light fuse! Go figure

[PSDfan99]

Originally Posted by vitalidle

Good deal. I have a good one for you. My 95 wrangler the pcm is fed by the 20 amp dome light fuse! Go figure

dome light fuse and cig lighter fuse, what a design.

You would think that something as important as the OBD port on a vehicle would have its own fuse, oh well.

[vitalidle]

Yeah I hear ya! You can just imagine how much I was scratching my head trying to figure out why my pcm wouldn't light up!