I turned my attention tonight to the ECU again... I have lashed up something on the bench that allows me to simulate the RPM sensor (G28) by way of the 'crankwheel pulser' software that I used in the past. I had the emulator watching some code blocks as well to start to establish where it jumps around depending on what is going on.
Some quick highlights --->
G28 amplitude needs to be above 0.5V pk to pk before the ECU clears the 'no G28 fault'.
The fuel pump relay is activated when RPM exceeds 13rpm (yes - thirteen).
No injection or spark pulses are triggered when it receives healthy G28 input at nominal idle speed - as you would expect
The RPM output from ECU is not activated in this 'G28 only' mode
Next step is to build G4 and G40 simulators and fool the ECU into thinking it is attached to a real engine - moving into normal maps that can be traversed synthetically - I love it when a plan comes together, but I need to start making a proper box for this beast - I am drowning in spaghetti and running out of space to work in
Some quick highlights --->
G28 amplitude needs to be above 0.5V pk to pk before the ECU clears the 'no G28 fault'.
The fuel pump relay is activated when RPM exceeds 13rpm (yes - thirteen).
No injection or spark pulses are triggered when it receives healthy G28 input at nominal idle speed - as you would expect
The RPM output from ECU is not activated in this 'G28 only' mode
Next step is to build G4 and G40 simulators and fool the ECU into thinking it is attached to a real engine - moving into normal maps that can be traversed synthetically - I love it when a plan comes together, but I need to start making a proper box for this beast - I am drowning in spaghetti and running out of space to work in
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