12. Cooling System
12-3
Diagnosis for Cooling System
The temperature indicated is too high
Y
Y
Y
Water hose clogged
Y
B-2. Inspect the circuits of
water temperature have
short or earth?
Short or earth handle
Y
Y
B. Turn on main switch and
check the water
temperature indicator
back to zero?
B-1. Measure thermo unit to
confirm voltage 6V↑?
N N
Replace thermo unit
Meter problem
N
D. Close radiator cap,
measure thermo unit to
confirm voltage reduced
comply with temperature
rise?
Replace thermo unit
N
Y
Y
N
C. Open radiator cap and
softly throttle, inspect
coolant have circulated?
C-1. Eng. stop and remove
water pump cover, start
the motor to inspect pump
its rotation?
Water pump repair
N
N
A1.Refill the radiator with
coolant then check for any
leakage?
Water leaking problem
YN
A. Stop and waiting for the
engine is completely
cooled down, open cap to
check the capacity of
coolant in radiator.
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