Hisun HS700UTV-4 Maintenance Handbook page 347

4.Radiator fan motor
• Disconnect the radiator fan motor coupler.
• Connect the battery (12 V) as shown.
Battery (+) lead Blue terminal ①
Battery (–) lead Black terminal ②
• Check the operation of the radiator fan motor.
5.Thermo switch 3
• Remove the thermo switch 3 from the radiator.
• Connect the pocket tester (Ω × 1) to the thermo
switch 3 ①.
• Immerse the thermo switch 3 in coolant ②.
• Check the thermo switch 3 for continuity.
While heating the coolant use a thermometer
③ to record the temperatures.
□ The thermo switch 3 circuit is closed.
A
The thermo switch 3 circuit is open.
□
B
Test Coolant
step temperature
Less than 75±3 °C
1
(167 ± 5.4 °F)
More than 75 ± 3 °C
2
(167 ± 5.4 °F)
More than 68 °C
3
(154.4 °F)
Less than 68 °C
4
(154.4 °F)
Test steps 1 & 2: Heating phase
Test steps 3 & 4: Cooling phase
ELECTRICAL COMPONENTS
DOES NOT TURN
Continuity
No
Yes
Yes
No
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Replace the radiator fan motor.