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Magister · 08-06-2008, 01:47 PM

I re-did some test and I don't know where to continue now

I checked that my car use only K line and not L, which is ok, I also have the CAN pins but as it's a 07 it should work with the "old" iso protocol.

I added init for ISO14230 fast and slow but it changes nothing.

I monitored the output of my circuit and I rightly output on the OBD2 plug, timing for the 5 bauds init is right to the millisecond according to my scope.

However my ECU never answer something, the K line is always high and the ECU never pull it down to start to send someting (a start bit), I monitored with the scope in the car!

I re-checked our hardware design and it seems ok AFAIK.

I will try to find some help on the avrfreaks forum maybe?

08-06-2008, 01:47 PM	#116 (permalink)
Magister OBDuino coder Join Date: Jun 2008 Location: Montréal, QC Posts: 212 Titine - '13 Hyundai Sonata Hybrid Thanks: 3 Thanked 10 Times in 8 Posts	I re-did some test and I don't know where to continue now I checked that my car use only K line and not L, which is ok, I also have the CAN pins but as it's a 07 it should work with the "old" iso protocol. I added init for ISO14230 fast and slow but it changes nothing. I monitored the output of my circuit and I rightly output on the OBD2 plug, timing for the 5 bauds init is right to the millisecond according to my scope. However my ECU never answer something, the K line is always high and the ECU never pull it down to start to send someting (a start bit), I monitored with the scope in the car! I re-checked our hardware design and it seems ok AFAIK. I will try to find some help on the avrfreaks forum maybe? __________________ 2013 Hyundai Sonata Hybrid