Service manual

COOLING SYSTEM
CHECKING THE COOLING SYSTEM
1. The coolant temperature indicator light fails
to come on.
1. Coolant temperature indicator light bulb and
socket
• Check the coolant temperature indicator light
bulb and socket for continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”
• Are the coolant temperature indicator light
bulb and socket OK?
YES
V
I
NO
Replace the coolant
temperature indicator
light bulb, socket or both.
2. Voltage
• Connect the pocket tester (DC 20 V) to the
meter light coupler (wire harness side) as
shown.
Positive tester probe -> brown ©
Negative tester probe-»green/white(D
©
K
Br
,—t.G/W
rrrp_
B
®
G
Lg
B/ G
G
Br
Lg
G/W
B/ G
B
• Set the main switch to “ON”.
• Measure the voltage (DC 12 V) of brown 1
on the meter light coupler (wire harness
side).
• Is the voltage within specification?
YES
V
I
NO
The wiring circuit from
the main switch to the
meter light coupler is
faulty and must be re-
paired.
3. Voltage
• Connect the pocket tester (DC 20 V) to the
meter light coupler (wire harness side) as
shown.
Positive tester probe -> green/red ©
Negative tester probe-»ground
• Set the main switch to “ON”.
• Measure the voltage (DC 12V) of green/
red© on the coolant temperature sensor
coupler (wire harness side).
• Is the voltage with in specification?
YES
V
4
NO
The wiring circuit from
the main switch to the
coolant temperature
sensor coupler is faulty
and must be repaired.
Refer to “CIRCUIT DIA-
GRAM”.
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