Subaru XT 1988 Service Manual page 1232

L
6-2 BODY ELECTRICAL SYSTEM
Table 2
Speedometer should point Meter drive shaft speed
60 km/h
637.5 rpm
60 MPH 1,020 rpm
L6-863
TEMPERATURE GAUGE
Fig. 26 Temperature gauge (cross coil type) is operated by thermistor
incorporated in temperature sending unit installed in intake
manifold.
6)
Remove indicator & warning unit from meter visor.
Since thermistor resistance changes with voltage, voltage
Indicator & warning unit
L6-864
Fig.
27
7) To assemble, reverse disassembly procedures.
INSPECTION
SPEEDOMETER
It is normal if the readings of speedometer are within the
tolerances shown in the table 1, against the standard indicated
speeds on the speedometer tester.
Besides, speedometer should point as shown in the table 2.
Table 1
Standard indicated
20
speed (km/h or MPH)
40 60 80
(km/h)
17.9 - 38.3 - 56.1 - 75.6 -
Readings
20.9
40.3
60.2 79.6
of speed-
ometer
(MPH)
17.9 - 38.3 - 56.1 - 75.6-
20.9 40.3 60.2 79.6
regulator is provided to prevent error in gauge indication due
to voltage fluctuation.
A
Temperature gauge
Voltage regulator
Fuse
(15A)
r::r::B-o
B
Fig.
28
Temperature sending
unit (Thermistor)
Ignition
switch
Fusible
link
Battery :
L6-105
1
It is normal if the readings of temperature gauge are within the
tolerances of engine coolant temperature as shown in the
following table against the standard resistance between point
A and B indicated in the wiring diagram when ignition
switch is "ON".
Readings of
Standard Temperature of
temperature gauge resistance engine coolant
50°C (122°F) 153.90
34 - 62°C
(93 - 144°F)
120°C (248°F) (16.10)
116 -123°C
(241 - 253°F)
Besides, standard resistance of temperature gauge is 450.
22