1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 138Get this manual
STEPSENSOR COIL TEST Ground Test
[!!] 1Disconnect Amphenol connector:
Amp, the 5-pin connector 12 Amp, the 3-pin connector
2Set peak-reading voltmeter to:
Amp, "POS" AND "5", or "SEN" and "5" on Stevens CD-77 meter 12 Amp, "NEG" and "5", or "SEN" and "5" on Stevens CD-77 Meter
f11l 3Alternately, connect voltmeter between sensor coil terminals and clean engine groundRefer to chart for terminal locationCrank engine and observe meter reading at each connection Any reading indicates sensor coil or leads are grounded Locate and repair ground, or replace sensor coil4 Amp