Trouble Diagnosis For Cooling System - Sym GTS 250 Service Manual

Trouble Diagnosis for Cooling System

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