I have never worked on one of these but,
check for crank sensor at ecu pin 55(blue yellow) and 56(blue green)
Check Ignition Amplifier
Pin 4 ign feed 12v (black)
Pin 6 Chassis ground (brown)
Pin 2 ECU coil turn on signal (blue red)
Pin 5 Primary ground circuit (green)
Check ign coil
IGN 12v
Primary current
Have you got a scope or a logic probe?
Make sure the ecu is sending the signal to the ign amplifier.
The fuel shut off switch appears to only have control over the fuel pump
hth
James
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