1989 Johnson Evinrude "CE" Colt/Junior thru 8 Service Manual, P/N 507753, Page 134Get this manual
Ohmmeter Test INotel All o.hmmeter tests must be performed with engine NOT runnmgf61 1To test the resistance, calibrate ohmmeter on high ohms scale and connect between the two sensor output leads Meter reading must be 100 15 ohmsReplace coil if the resistance reading is not within this rangef71 2To test for grounded condition, calibrate the ohmmeter on high ohms scaleConnect the meter black lead to clean engine groundAttach the meter red lead, alternately, to each sensor output lead Any needle movement indicates the sensor coil or leads are grounded Locate ground and repair, or replace the sensor coil 4C