1998 Johnson Evinrude "EC" 150, 175 FFI Service Manual, P/N 520211, Page 73Get this manual
ILow Maximum RPM (Cont SYSTEMCOMPONENT CAUSES Blown Fuse to Injector Fused in pairs Electrical System Low Output from 26V Regulator Affects Fuel and Ignition Faulty ECU Software ACTIONS
Check fusesrepeated failure might be due to grounded injector signal leads or shorted Injector Coil Monitor Voltage using OMC Diagnostic SoftwarePossible Code 17See Fuel or Ignition System Action Steps Possible Code 15reprogram or replace ECU