The computer has to have voltage & ground to transfer the a-c voltage signal from the flywheel pick-up into a dcV signal. THE power comes from the overvoltage relay that is next to the right A/C vent.

ON the ECU check pins 1 (power) & 14 (ground).

ALSO the crank sensor should make 4-6V a-c at idle, measured at pins 16 & 20.

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