No Communication Issue

[51FTY73]

Hey guys been reading forum looking for answers. Bought Terminator HP kit in 2017, finally got to finishing build in March. Long story short, opened box and no ECU. Holley sent me HP ecu that was supposed to come with kit and ever since I'm unable to get to "setup". Seems to have no comm with ECU, was talking with tech assist, sent me new handheld to no avail. I tried to email tech assist and no answers. When I try to update ECU firmware screen always reads "No File Found". I've tried every download on website that might pertain and a few different SD cards. Kit 550-424. Need help, car has been ready to start since March, not much hair left to pull.

[andrewb70]

The software on your computer and the firmware on the ECU probably don't match. I'd download the whole installation package for V5 build 171 and methodically go through the process of updating the ECU, handheld, and laptop EFI software. Andrew

[Danny Cabral]

Yes, the EFI (laptop/PC) software, ECU firmware & touchscreen unit must all be version compatible (LINK).

[51FTY73]

OK the V5 build complete file set. I'll try that tomorrow at work. I was told I could update all through handheld. Not the case? Wasn’t able to link with laptop either, that’s why I’m asking.

[Danny Cabral]

The ECU can be updated from the 3.5" TSLCD, but the safest way is to update each Holley EFI device independently.

[andrewb70]

OK the V5 build complete file set. I'll try that tomorrow at work. I was told I could update all through handheld. Not the case? Wasn’t able to link with laptop either, that’s why I’m asking.

The communication issues from the laptop can possibly be a Windows driver issue and not necessarily anything to do with the Holley EFI software. Andrew

[51FTY73]

Tried to update firmware from laptop and getting communication issue with ECU message. Retried several times times, same message. Using Windows 10 Pro. Power and ground good to ECU, battery charged. Not sure what to try next.

[andrewb70]

Got another laptop handy? Try that. Also, are you putting power to the red/white wire? That is actually what powers up the ECU. Andrew

[51FTY73]

Yes, ignition power to red\white wire, handheld powers up. Believe handheld get power also from red\white wire? I'll try to find another laptop, all laptops here have Windows 10. GM requires Windows 10 to run our programs. (GM Dealer).

[Danny Cabral]

Did you click on "USB Link" in order to go "Online" with the ECU? Does your computer's Device Manager indicate it's connected? If so, try restarting your laptop. Some laptops are full of background programs. Temporarily disabling antivirus software programs seems to be a common resolution. A cordless mouse can cause problems too. Also, ensure the EFI software is set to run as an "Administrator" (right click for Properties/Advanced).

Originally Posted by Danny Cabral • Laptop "Online" Communication With ECU: Next to the “Toolbox” button, is a button to indicate the following status of ECU/laptop communications. Offline: Is shown when the ECU is not powered or the USB cable is not connected. USB Link: Is shown when the ECU is powered and USB connectivity is established. However, the user has not chosen to select the “Online” mode, and the Laptop & ECU are not communicating with each other. Changes made at this time on the laptop, are not being updated in the ECU. Online: Is shown when the Laptop and ECU are communicating. At this point, changes made with the laptop are real-time updated in the ECU.

Originally Posted by Danny Cabral • EFI Software Problems: Often times, when EFI software related functions don't work properly, it's caused by a corrupted software download/installation. I suggest completely removing the Holley EFI software from the "Control Panel", "My Documents" (Holley folder) and the "C:Drive" (Program Files, Holley folder) and install a fresh EFI software download. Save your Global File somewhere. • ECU Firmware Problems: Conversely, often times, when actual ECU related functions don't work properly, it's caused by a corrupted ECU firmware installation. As a last resort, you can try reflashing the ECU firmware version (LINK). The ECU firmware is in with the software download (LINK). Also, try completely disconnecting the battery for 20 minutes (or 2 hours for some severe faults). This "resets" some unusual ECU issues.

[mkeiser]

The communication issues from the laptop can possibly be a Windows driver issue and not necessarily anything to do with the Holley EFI software. Andrew

What's the fix for this? I feel like it's my issue. The laptop will recognize the ECU, but it won't communicate. I've tried versions 2 through 4 with the same result.