I've been trying to extract bin file from model above. It has 2 MCU SH7052 model which one holds fly by wire throttle mapping, the other holds fuel, ignition and etc mapping.
I managed to get to AUD port of both MCU, however only able to extract bin file from fly by wire throttle MCU.
Basically i soldered wires to AUD pads, and connect to arduino to extract the bin file. I double check all my wires connection from other end of wire to pad, no problem. Then to the back of ECU board which also has AUD connections, no issue. Pad 1 and pad 2 gives 5.08V reading. Still can't extract the bin file.
ECU is currently connected to harnesses and battery, with some resistors and switches, managed to clear all error codes, however haven't try to simulate crank and cam signal to get ecu thinks engine is running with tacho moving.
Is there anyone can give me a direction to check/ diagnose the issue mentioned? hope ecu is not fried. Thank you everyone. Will post up some photo laters
** the way i power up ecu is have the ecu connect to oem harness and battery**
yesterday i managed bench run the ECU, however some error exists, Error 11, 14 & 46 Error 11: missing cylinder identification sensor/ cam signal Error 14: intake pressure sensor Error 46: charging system Due to the signal generated from my laptop soundcard is way too low (around 0.76V AC RMS @ 1200rpm, peak to peak 2V) for R6 cylinder identification sensor/ cam signal input which is using hall sensor with 5v input, output near to 5V with square wave. I also doubt the voltage is sufficient for crank position input which is using VR sensor. However yet to be determined. I now assumed the ECU is working. I haven't discovered how to dump MCU 2 bin ( fuel & ignition ), If there is anyone would like to share / hint me the method they used to successfully read MCU2, I would be appreciate it.