2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 325Get this manual
LIGHTSSWITCHES
NEUTRAL AND REVERSE SWITCHES
INSPECTION
Remove the bolt and gearshift peda l
Release the neutra l reverse switch wire from the clamp and disconnect each switch connectorCheck for continuity between the switch terminal and engi ne groundNe utra Switch: There should be continuity when he transmission is in neutral, and no continuity when the transmission is in any gear except neutralReverse SwitchThere should be continuity when the transmission is in reverse, and no continuity when he transmission is in any position except reve rse Insta ll the removed parts as described below