1997 Johnson Evinrude "EU" 9.9 thru 30 2-Cylinder Service Manual, P/N 507263, Page 126Get this manual
7 DR4619
STEPCHARGE COIL TEST
Ground Test 1Disconnect 5-pin Amphenol connector between ignition plate and power pack
2Set peak-reading voltmeter to:
9.915"NEG" and "500" 20 thru 30"POS" and "500"
3Alternately, connect voltmeter between ignition plate connector terminals" A", "0", and clean engine groundCrank engine and observe meter at each connection Any reading on either test indicates charge coil or leads are grounded Locate and repair ground, or replace charge coil
4If no reading is indicated in Step 3, go to Output TestOutput Test