2003 Johnson ST 6/8 HP 4 Stroke Outboards Service Manual, PN 5005471, Page 77Get this manual
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 coilComplete all circuits disconnected during this test
Voltmeter Output Test
Set peak-reading voltmeter to NEG5, or SEN5 on Stevens CD-77 meterConnect black sensor wire between starter mount plate and sensorAttach voltmeter black lead to black sensor wire connnection Attach meter red lead to sensor end of whiteblack bullet connector
Sensor Coil Test
Voltmeter Ground Test
Disconnect black sensor wire between starter mount plate and sensor, and disconnect whiteblack wire bullet connectorSet peak-reading voltmeter to NEG5, or SEN5 on Stevens CD-77 meterConnect voltmeter between between sensor end of whiteblack bullet connector and clean engine groundDRC6332