9 ELECTRICAL SYSTEM
[8] GAUGE
B2410·
B271
0 • B2910 WSM,
12271
The fuel quantity and coolant temperature are
indicated by the ammeters. The ammeters indicate each
amperage flowing through the fuel level sensor
(7)
for
the fuel quantity detection and through the coolant
temperature sensor (8) for the coolant temperature
detection.
®
(1)
Main Switch
(2)
Fuse
(10
A)
(3)
Fuel Gauge
(4)
Water Temperature Gauge
(S)
Slow Blow Fuse
(6) Battery
(7) FuelLevelSensor
(8) Water Temperature Sensor
(j)
®
®l
12010F90110
(1) Fuel Quantity
12010M90140
..
Fuel
Level
Sensor
The remaining fuel quantity
is
detected by the fuel
level sensor installed
in
the fuel tank and indicated
on
the fuel gauge. For detection, a float and a resistor are
used.
As
the float
(1)
lowers, the resistance
of
the variable
resistor
(2)
varies. The relation between the amount of
fuel and the resistance is
as
follows.
12010F90120
E
+----CD
F
1
toSQ
(1)
Float
E
103 to 117 Q
(2) Variable Resistor
12490M90060
(2) Coolant Temperature
11790F90S70
..
Coolant Temperature Sensor
The coolant temperature sensor
is
installed to the
cylinder head of engine, and its tip is
in
touch with the
coolant.
It
contains a thermistor (4) whose electrical
resistance decreases as the temperature increases.
Current varies with changes
in
the coolant
temperature, and the increases or decreases
in
the
current move the pointer
of
gauge.
Characteristics of Thermistor
Temperature
Resistance
SO
°C
(122
OF)
148.8 Q
80°C
(176
OF)
SO.3Q
120°C
(248
OF)
16.0Q
170°C
(338
OF)
S.60
(1)
Terminal
(2)
Insulator
9-M15
(3) Body
(4) Thermistor
11790M90310
To Next Page
Loading...
Need help?
General
