Checking The Coolant Thermistors Operation - APRILIA RST mille Futura 2001 Service Manual

RST mille
USA
6.6.5 CHECKING THE COOLANT THERMISTORS
OPERATION
NOTE
The temperature measured by the front cylinder
thermistor (right side) is sent to the right display; the one
measured by the rear cylinder thermistor (left side) is
sent to the electronic control unit.
Remove the thermistor (1), see 5.4 (REMOVING THE
COOLANT THERMISTORS.).
As shown in the figure, connect a tester (2) (in ohm
meter mode) to the thermistor (1).
Immerse the thermistor (1) in a container (3) containing
coolant.
In the same container, immerse a thermometer (4) with
a range of 0 -150°C (32 -302°F).
Place the container on a burner (5) and slowly heat the
fluid.
Check the temperature shown on the thermometer (4)
and the thermistor (1) value shown on the tester.
Make sure that the value changes based on temperature,
as indicated.
Water temperature
(°C) (°F)
0 32
20 68
40 104
60 140
80 176
100 212
If the values do not change, or differ too much from
those given in the table, replace the thermistor (1).
Repeat the operations for the other thermistor.
Release 00/2002 - 03
Standard values
(W) (± 10%)
5896
2500
1175
595,5
322,5
186,6
ELECTRICAL SYSTEM
1
+ -
2
4
3
1
5
6
- 19 -
00