2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 122Get this manual
IGNITION IGNITION SYSTEM TESTS Ohmmeter Ground Test To test for grounded condition, connect ohmmeter, alternately, between each jumper and clean engine ground Any needle movement indicates charge coil or leads are grounded Locate and repair ground, or replace charge coil(D
Voltmeter Output Test
Set peak-reading voltmeter to POS5 or SEN5 on Stevens CD-77 meterAttach voltmeter black lead to ignition plate connector, terminal "B Attach meter red lead to the listed terminals
Terminal Locations
4Amp 12Amp "A,""C"
Sensor Coi Tests
Voltmeter Ground Test
Disconnect the Amphenol connector: Amp is 5-pin connector 12 Amp is 3-pin connector Set peak-reading voltmeter to POS5 or SEN5 on Stevens CD-77 meterAlternately connect voltmeter between sensor coil terminals listed and clean engine groundCrank engine and observe meter at each connection