Hondata

I plug in my s300 int my laptop, it shows that it is online, but i get no data from sensors and cant datalog. I downloaded updated firmware. When i try to download from the ecu the calibration is all corrupt, it shows that my idle is at 38500 rpm, and the maps look corrupt as well. it does not match the calibration that i sent to the s300 it comes back all screwed up.At first my car started but it dies right away, now it will not start at all.

From Help, about, what version of software are you using?

version 1.4.8.0

Download the most recent version from the downloads section of the website and see if that resolves the issue. The version you have is over a year old.

Ok, thanks i will try. But when I tried to hit check for updates, it tells me that it is up to date. I will go and download it from the site.

Ok i downloaded the latest version 1.5.4.0 and it still shows online but cant datalog or see any of the sensors. Now when i download from the ecu half the time i get what i uploaded and half the time all the numbers and maps are all messed up. The red led is constantly on and when i hit datalog the green one will flash every couple of seconds. Still the car will not start.

Go to Online and and click on Erase ECU. Then close the program, reopen it and go to New Calibration and choose one of the calibrations listed then and upload it and see if that resolves the problem.

Ok I tried that step and still same issue, I also resoldered the socket. I also noticed that my IACV is humming, what would be causing that. The red led is still always on and again when i datalog the green light flashes every 2 seconds, but I still see no data. I called the dealer that sold me the S300 to see if they can test it and they said they dont have a car to put it in so they cant. Bought it from Adrenaline Motor Sports in MO, serial number for the s300 is 11243. Is there any other steps i can take to further test it?

If you remove the s300 from the ECU does the IACV stop humming?

it still humms even when i unplug the hondata. would this iacv proble keep me from datalogging and seeing data from the sensors?

It sounds like you either have a wiring problem in the car, or you have a damaged ECU. Try the ECU in a known good car and if the problem persists then the ECU is bad.