Oil Cooler Fan Notes
SThermistor resistance decreases with temperature
SBoth fan and hot light should be on with thermistor leads shorted together
SFan blade should rotate drawing air in through cooler (blowing on engine)
Temperature
77° F (25° C)
240° F (116° C)
260° F (127° C)
290° F (143° C)
Battery Voltage
Thermistor / LR60 Fan Control Test
STurn ON and engine stop switch to RUN.
STest voltage on R/W wire to ground - R/W wire should have 12 Volts DC (battery voltage)
SShort thermistor leads together - fan and hot light ON? (If not, test hot light, fan motor and circuit)
SDisconnect thermistor wires and test the resistance of the thermistor (refer to temperature/resistance
table). Replace thermistor if out of specified range.
SReplace LR60 and test system.
Polaris Sales Inc.
THERMISTOR RESISTANCE VS. TEMPERATURE
Resistance ± 20%
100KΩ
3.5KΩ
2.5KΩ
1.6KΩ
Oil Cooler Fan Circuit
10.55
Oil Cooler Fan Control
Fan ON/OFF
Fan OFF
Fan ON
Fan ON
Fan ON
99/00 ATV Update
ELECTRICAL
Hot Light ON/OFF
Hot Light ON/OFF
12/99