1998 Johnson Evinrude "EC" 90, 115 SPL Service Manual, P/N 520209, Page 122Get this manual
Ohmmeter Test
All ohmmeter tests must be performed with the engine NOT running
1Calibrate ohmmeter on appropriate scale2Attach ohmmeter black lead to timer base connector, terminal "E"3Alternately, attach ohmmeter red lead to each terminal in the timer base connectorObserve ohmmeter reading at each connection Meter must show 40 10 ohms
4To test for grounded condition, connect ohmmeter, alternately, between each timer base terminal location and clean engine ground Meter must show high reading If meter shows low reading, locate and repair ground or replace timer base5Complete all circuits disconnected during this test