10. Cooling System
Diagnosis of cooling system
10-3
The water temperature
signal flashes
Y
A. Stop and waiting for
the engine is completely
cooled down, open cap
to check the capacity of
coolant in radiator.
A-1. Refill the radiator with
coolant and check for any
leakage?
Water leaking
problem
N
Y
N
Y
C-1. Eng. stop and remove
water pump cover, start the
motor to inspect pump
rotation?
Y
Y
Water hose clogged
Y
B-1. Inspect the circuits of
water temperature have
short or earth?
Short or earth
problem
Y
B. Turn on main switch
and check the water
temperature indicator
back to zero?
Meter problem
N
N
C. C. Open radiator
cap and gently rotate
throttle, inspect if
coolant circulating?
Water pump repair
N
N
Y
D. Close radiator cap,
measure thermo unit to
confirm voltage reduction
comply with temperature
rise.
Replace thermo unit
N
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