Kpro4 not connecting with laptop anymore

[mulligan188]

I have a k20 swapped eg its wired as per the hondata wiring diagram. It has an aim dash which worka fine with the motec protocol and has been running no worries with no codes.

After changing the battery and tidying up the wiring into its no longer connecting with my laptop. There is no red light flashing but the car still starts up no problem but its not the tune i originally put into it.

Ive tried multiple cables, uninstalled kmanager and the drivers reinstalled it theres no new updates and getting a bit stumped

[Spunkster]

It sounds like you may have a wiring issue. I would recommend that you try the ECU on a known working vehicle and see if it works correctly. If it does then you will need to go over everything you have changed and see what has been left out or damaged.

[mulligan188]

Doesnt work on another vehicle. Put another ecu in and it works fine. Sending the ecu back to see whats going on

[Spunkster]

What is the serial number that is on the K-Pro board inside the ECU?