1997 Johnson Evinrude "EU" 90, 105RW, 115, 150, 150W, 175 60 LV Service Manual, P/N 507268, Page 130Get this manual
5If 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 66Disconnect 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 77Disconnect the engine harness to instrument harness 6-pin connector that contains the blackyellow lead If meter now shows high reading, repair or replace instrument harness If meter shows low reading, repair or replace engine harness8Ifthe engine fails to shut off, test for open blackyellow lead, blackwhite lead, damaged key switch, or damaged power packOn V6 models, if starboard cylinders fail to shut off, test shift interrupter diode9Complete all circuits disconnected during this test E u