1999 EE Johnson Outboards 25, 35 3-Cylinder Service Manual, Page 114Get this manual
00 Ohmmeter TestKey Switch
INote All ohmmeter tests must be performed with the engine NOT running1Insta ll the emergency stop switch clip2Disconnect the 4-pin Amphenol connector between the ignition module and key switch
3Calibrate ohmmeter on appropriate scale Co nnect meter leads between key switch end of 4-pin connector, terminal "8", and clean engine ground Key OFF, meter must show low reading Key ON, meter must show high reading4If Step key ON reading is low one, disconnect harness blackyellow lead from key switch "M" terminal If meter now shows high reading, replace key switch If meter shows low reading, go to Step 55Disconnect the key switch 6-pin connector If meter now shows high reading, repair or replace key switch harness If meter shows low reading, go to Step 6