bobbik
26th July, 2019, 06:26 PM
Problem is that car has non-factory auto transmission.
TCU reads CAN frames from ECU properly, ECU has U1209 permanent fault(transmission from TCU error), and doesn't accelerate well. When recode ECU to manual transmission, it stops sending frames to TCU, and gearbox stops working well. I sniffed can frames, and i know that TCU sends almost same frames as genuine, except one frame is 1 byte longer, and there is one additional frame.
I'm not familiar with chiptunning, but I know SID803 is difficult, and has different maps for different gears and different engine rpm. My question: is it possible to make run it at least as stock, with U1209?
I imagine that remove DTC from table and switch off some limiters could make it run preety fast?
Other problem is that cruise control doesn't work with that DTC but it is not much important to me.
TCU reads CAN frames from ECU properly, ECU has U1209 permanent fault(transmission from TCU error), and doesn't accelerate well. When recode ECU to manual transmission, it stops sending frames to TCU, and gearbox stops working well. I sniffed can frames, and i know that TCU sends almost same frames as genuine, except one frame is 1 byte longer, and there is one additional frame.
I'm not familiar with chiptunning, but I know SID803 is difficult, and has different maps for different gears and different engine rpm. My question: is it possible to make run it at least as stock, with U1209?
I imagine that remove DTC from table and switch off some limiters could make it run preety fast?
Other problem is that cruise control doesn't work with that DTC but it is not much important to me.