2005-2011 Honda FourTrax Foreman TRX500 FE/FPE/FM/FPM/TM Service Manual, Page 447Get this manual
LIGHTSMETERSSWITCHES
OIL COOLING SYSTEMTEMPERATURE INDICATOR
INSPECTION
NOTEThe oil temperature indicator should come on for few seconds when the ignition switch is turned to ONthen it should go off
Check that the neutral indicator or reverse indicator function properly If they do not function, perform the powerl ground line inspection (page 2113) If they function, check the following
OIL TEMPERATURE SENSOR
Disconnect the connector from the oil temperature sensor and ground it with jumper wire
Turn the igniti on switch to ON and check the cooling fan motor and oil temperature indicatorThe motor should start and indicator should come on when the jumper wire is connected, and the motor should not start and indicator should not come on when the jumper wire is disconnected If the system is normal, check the oil temperature sensor (page 21-20) If it is abnormal, check as follows