APRILIA pegaso 650 i.e. Service Manual page 174

ELECTRIC SYSTEM
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6.9.1 WIRING DIAGRAM
Wiring diagram key
1) Electrofan
2) Thermal switch
3) Battery
4) Fuse (20A)
5) To voltage regulator
6) To the light loads
7) Ignition switch (2 – 1 – &)
6.9.2 CHECKING THE ELECTROFAN OPERATION
To check operation of electrofan (1):
N
Disconnect the two electric connectors (8) (9) from the
thermal switch (2) and connect them together.
If the electrofan does not work:
N
Make sure the connector (10) is correctly inserted.
N
Rotate the fan manually, making sure the blades do not
touch the mount.
If the rotation is free from hindrances:
N
Check the recharge system, see 6.3 (CHECKING THE
RECHARGING SYSTEM) and the 20A fuse, see 6.18
(CHANGING THE FUSES).
6.9.3 CHECKING THE THERMAL SWITCH
OPERATION
N
Remove the thermal switch (2), see 5.5 (REMOVING
THE COOLANT THERMISTOR).
N
Connect a tester (11) (set as an ohmmeter) to the ther-
mal switch (2) as illustrated in the figure.
N
Immerse the thermal switch (12) in a container holding
coolant.
N
Immerse a thermometer (13) with a 0 to 150 °C range
in the same container.
N
Place the container on a burner (14) and slowly warm
up the liquid.
N
Make sure that the temperature indicated by the ther-
mometer and the value of the thermal switch indicated
on the tester correspond to the data provided in the ta-
ble.
Coolant temperature
(°C)
below 95 °C
over 90 °C
If the values depart excessively from those indicated
in the table, change the thermal switch.
6 - 26
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Standard values (Ω)
∞
0
Pegaso 650 I.E.
Release 00/2002-02