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View Full Version : HELP, EFI live cannot detect pcm/ecm/tcm


bigblackdiesel
May 29th, 2010, 08:58 AM
Im trying to go from a dsp2 to a dsp5 and when it goes to check the status it cannot connect. How do i fix this? Thanks
bigblackdiesel
May 29th, 2010, 10:36 AM
anyone?
Ira
May 29th, 2010, 01:45 PM
If you plug the V2 into the truck with the USB disconnected, can you get the VIN from the truck or read codes??

Ira
bigblackdiesel
May 29th, 2010, 10:40 PM
No, it will not read it
Ira
May 30th, 2010, 03:31 AM
When you plug it in the car does it light up?
Has it ever worked?
Is the key all the way on when you tried this?

Ira
bigblackdiesel
May 30th, 2010, 03:34 AM
it turns out it was just the fuse :doh2: Thanks for the replies tho
toolie
June 3rd, 2010, 11:46 AM
it turns out it was just the fuse :doh2: Thanks for the replies tho

What fuse?
bballer182
June 3rd, 2010, 01:56 PM
usually the cigarette lighter fuse.

the 12v supply to the OBD port is on the same electrical bus as the lighter fuse. (at least on an '05)
bigblackdiesel
June 3rd, 2010, 02:29 PM
actually it was the ecm fuse under the hood in the fuse box. the v2 had power from the obdII port but that is a common issue as well