Unable to read LS9 ECM - CorvetteForum - Chevrolet Corvette Forum Discussion

Notices
C6 Scan & Tune Onboard Diagnostics, Service Advice, Dyno Tuning, and Fuel Management for the Corvette
Sponsored by:
Sponsored by:

Unable to read LS9 ECM

Old 08-15-2018, 03:52 PM
  #1  
LeForce
CF Member
Thread Starter
 
Member Since: Apr 2011
Posts: 56
Thanked 1 Time in 1 Post
Default Unable to read LS9 ECM

A few months back I purchased a brand new LS9 engine along with a harness & controller for an engine swap project. I also purchased HP Tuners MPVI Pro suit in case I need to scan or modify the tune. After I turned ignition on, the VCM editor software didn't recognize the ECM & I was unable to read the tune file! I turned the engine on & tried the scanner, VCM scanner seem to have connected to the ECM as the connect (car) icon went blank after clicking it, but software didn't seem to read any parameter, not a single reading! I tried right clicking on the parameters on the left of the screen picking 'add channel' only to get the message that I need to be connected to the car first!
I'm new to HP Tuners & I'd appreciate your help.
LeForce is offline  
Old 08-16-2018, 05:17 PM
  #2  
HPTuners
Supporting Vendor
 
HPTuners's Avatar
 
Member Since: Jun 2004
Posts: 677
Thanked 6 Times in 4 Posts
Default

Hello, I would recommend contacting support with this issue and they should be able to help you out. You can do this through the contact tab on our website https://www.hptuners.com/ , or with a direct email to [email protected]
HPTuners is offline  
Old 09-14-2018, 01:47 AM
  #3  
tblu92
CF Senior Member
 
tblu92's Avatar
 
Member Since: Aug 2005
Location: CA.
Posts: 4,631
Thanks: 0
Thanked 169 Times in 157 Posts
St. Jude Donor '13-'14-'15
Default

If I'm hearing you correctly you are having NO COMMUNICATION to your ECM
Typically the tuner box will not light up and will be dead
The most common issue for this is
GM hides the fuse to your OBD2 port onto your "cigartette lighter" fuse
So if you are using any devices that uses the cig lighter for power it often times will fry the fuse and the ECM will not communicate--We were taught at EFILIVE to discourage all owners to use any charging devices that use the cig lighter as this circuit powers up your 0BD2 port
tblu92 is offline  


Thread Tools
Search this Thread
Sponsored Ads
Vendor Directory

Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: