A problem seems to have developed with a s300, basically car was tuned about 6 weeks ago with no issues and upon coming back for a tweak we cannot communicate with ecu at all. It does prompt hit F10 to datalog when ignition is turned on but it shows no values when you do datalog and I cannot download or upload a new calibration to ecu. Any ideas what could be the problem?
We lifted cover off ecu and everything looks ok, board is positioned correctly etc.
s300 Unresponsive
Re: s300 Unresponsive
This sounds like a problem with the ECU socketing. Who socketed this ECU?
Re: s300 Unresponsive
I do not know who socketed ecu, it's a couple of years old. It is a s300j installed into JDM P30. We had a look inside Ecu and everything looks ok. Anything in particular I should look for?
Re: s300 Unresponsive
Go over all the solder joints, touch them up with more heat and solder and make sure that there are no cold joints.
Re: s300 Unresponsive
Does the 4 pin header for datalogging need to be connected in order to download or upload to ecu? Reason I ask is, I've got a long case s300 socketed ecu which I could try the s300j in but obviously the 4 pin header is in different position so won't be able to connect that
Re: s300 Unresponsive
Yes it needs to be connected. You could always make an extension with pins and wires for temporary testing.
Re: s300 Unresponsive
Ok I will try that and report back my finding. Thanks.