1976 Evinrude 200 HP Outboards Service Manual, PN 5199, Page 56Get this manual
dIn some conditions, sensors may be grounding out to the shield but will not show up with an ohmmeterThis condition may be found by using the condenser tester leakage test, where voltage of approximately 500 volts is applied to the sensorSee Figure 4-21 Uwin NOTE li
Disconnect all sensor leads from Power Pack
1White lead Figure 4-19Checking Starboard Side Sensor Coils leaving the meter black lead connected to the common white leadSee Figure 4-19bWith sensor leads still disconnected from Power Pack, cOIUlect ohmmeter (HI ohms scale) alternately between each sensor lead and groundInfinity reading on each sensor indicates good sensorZero or any reading indicates leads or sensor coil is shorted to grolUldSee Figure 4-2063580
Meter red lead Meter Meter black lead Timer base and sensor coil assembly Starboard sensor leads Port side sensor leads
Figure 4- 21Testing Sensors for Grounded Condition
cThe sensor coil and timer base are serviced as lUlit
eGround the black lead of the tester to the timer base assemblyAttach the red lead of the tester to one of the sensor leads, and apply the leakage testRepeat test on each sensor leadMeter will indicate if shorting(Be sure sensor leads are not touching each other or touching ground