At 3250 miles 'check fuel cap' came on the same time the low fuel indicator displayed. From what I have researched , the ECU will have to cycle at 3/4 and 1/4 fuel levels 4 times.It should then reset the 'check fuel cap'. I plan keeping this 'FIT' for a while and would like to obtain laptop software and an obd2 reader/reset handheld. My question is - does this 'FIT' use the "CAN" diagnostic network or the "ISO" network?