12. COOLING SYSTEM
12-3
Trouble Diagnosis
The engine temperature is too high
z
The water thermometer and the temperature sensor do not work properly.
z
The thermostat is stuck to closed.
z
Insufficient coolant.
z
The water hose and jacket are clogged.
z
Fan motor malfunction.
z
The filler cap of the radiator malfunction.
The engine temperature is too low
z
The water thermometer and the temperature sensor malfunction.
z
The thermostat is stuck to open.
Coolant is leaking
z
The water pump mechanical seal does not function properly.
z
The O ring is deteriorated.
z
The water hose is broken or aged.
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