1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Manual, P/N 507266, Page 132Get this manual
11 DR4739
STEPSENSOR COIL TESTQUIKSTART MODELS
Ground Test
1Disconnect the 5-pin Amphenol connector between the timer base and power pack
2Set peak-reading voltmeter to "POS" and "5", "SEN" and "5" on Stevens CD-77 meter3Alternately, connect voltmeter between each timer base terminal and clean engine groundCrank engine and observe meter at each connection Any reading indicates sensor coils or leads are grounded Locate and repair ground, or replace timer base4If no reading is indicated in Step 3, go to Output TestOutput Test 1Set peak-reading voltmeter to "POS" and "5", "SEN" and "5" on Stevens CD-77 meter2Attach voltmeter black lead to terminal "EAlternately, attach meter red lead to terminals",B", and "C" 3Crank engine and observe meter at each connection If meter shows 1.5 volts or higher, go to Step If meter shows less than 1.5 volts, check condition of wiring and connectors If wiring and connector condition is good, go to Ohmmeter Test