1993 Johnson Evinrude "ET" 40 thru 55 Service Manual, P/N 508283, Page 135Get this manual
3 STEPSTOP CIRCUIT TEST
Elimination Test
it To avoid possible shock hazard, do not handle ignition coils or spark tester during cranking tests1Disconnect 5-pin Amphenol connector between ignition plate and power pack2Insert jumper wires between the "A", "B", "C", and "0" terminals of the 5-pin connector3Crank engine and observe results at spark tester If spark now jumps alternately at each gap, the problem is in the stop circuitGo to Ohmmeter TestStop Button or Ohmmeter TestKey Switch If there is no spark at one gap, go to STEPPOWER PACK OUTPUT TEST If there is no spark at both gaps, go to STEPCHARGE COIL TEST