2006-2010 Suzuki DF150 / DF175 4-Stroke Outboards Service Manual, Page 152Get this manual
ENGINE ELECTRICAL
NEUTRAL SWITCH Check for continuityinfinity of the neutral switch! 09930-99320: Digital testerTester range:(Continuity) Neutral switch in remo-con box 1Disconnect neutral switch lead wire connector from ignition switch2Check continuityinfinity between switch brown wire leads while operating remo-con handleShift position Neutral Forward Reverse Tester indicates Continuity Infinity Infinity
REVERSE FORWARD
If out of specification, replace neutral switchNeutral switch on engine side 1Disconnect neutral switch lead wire connector2Check continuityinfinity between YellowGreen and Brown lead wires while operating remo-con handleShift position Neutral Forward Reverse Tester indicates Continuity Infinity Infinity