Denali08

Here is the message:

"Unable to locate VCM, verify cable is connected and key is in the run position."

I am trying to pull the tune file from 2003 Chevy Truck. Was able to connect before. Truck was tuned by a shop using EFI Live (MAF Tune).

Recently changed my laptop and downloaded Hp TunerS from web site Ver2.22 and downloaded the driver file from HP Tuners' CD which is almost 2 years old.

Engine is out of the truck. Connected battery and removed fuel pump fuse. Key is in run position and cable connect.

What to do?

foff667

iTrader: (2)

Connect MPVI usb interface to the vehicles obd2 port but NOT your laptop does the green power light illuminate? If not its likely a blown obd2 port fuse.

repo

iTrader: (2)

I had a simular problem it was the drivers were incorrect. I got a new windows 7 and they have a diferent driver than previous systems. Good luck

james

Denali08

Which driver did you install? HP Tuners CD driver or HP Tuners driver downloaded from their web site?

I used the driver from the CD which I think is older than the one on the site.

I will download driver from site and go back to the shop and try to test without laptop as suggested by foff667 then with new driver installed.

06X6spdGTO

iTrader: (6)

okay this may sound stupid, but sometimes simple things are the problem.

Did you connect VCM Scanner and forget to disconnect and close current log file??

repo

iTrader: (2)

we used the one from the websight. there is some updated drivers in the forum section

Pulse_GTO

iTrader: (2)

Check the cigarette lighter fuse.

Denali08

No. Only VCM editor was open.

diablotruck

iTrader: (25)

When mine did that it was the cig lighter fuse under the hood that was bad.

Denali08

How is it related?

foff667

iTrader: (2)

it powers the obd2 port.

Denali08

I think it is. I couldn't charge my mobile last time from cig lighter. Had to use the other aux power outlet for charging!

I will check next time I go to the shop.