1990 Johnson Evinrude "ES" Cross V 88 thru 115, 150 thru 175, P/N 507874, Page 337Get this manual
TroubleshootingPower Supply Before beginning this procedure, be sure: Key switch is OFF and emergency ignition cutoff switch cap and lanyard is removed Engine battery is fully charged Engine battery cables are connectedThis procedure is to be used with the fold-out wiring schematic located at the end of the book1Connect voltmeter black lead to clean engine ground2Check for voltage at Point Vl If voltage, go to Step If no voltage, check battery condition and connections3 Check for voltage at Point V2 If voltage, go to Step If no voltage, check engine harness Red 14 gauge lead4Check for voltage at Point V3 If voltage, go to Step If no voltage, check condition of engine harness RedPurple 16 gauge lead and engine harness 20 amp fuse PIN 5108845Push trim switch DOWN and check for voltage at Point V4 If voltage, go to Step If no voltage, check condition of connector and trim switch 6Push trim switch DOWN and check for voltage at Point V5 If voltage, go to Step If no voltage, check condition of relayRefer to Relay Ohmmeter Tests, this Section7Push trim switch DOWN and check for voltage at connector C2 If voltage, service trim motor If no voltage, check trim harness Green lead8Push trim switch UP and check for voltage at Point V6 If voltage, go to Step If no voltage, check condition of connector and trim switch