Gilera Nordwest, Workshop Manual

Page: 118 / 136

TEMPERATURE INDICATOR
Disconnect the wire from the temperature sensor and ground it.
Turn the ignition switch to “ON”; the needle on the temperature indicator
must move to the “H” side (red). Do not ground the temperature sensor
wire for more than a few seconds or there may be damage to the
temperature gauge.
OIL PRESSURE SENSOR
Disconnect the oil pressure sensor wire.
Turn the ignition switch to “ON”.
Ground the sensor wire to the engine; the low oil warning light should turn
on. If not, check for a short or a disconnected wire or that the warning
light is not burned; replace bulb if necessary.
If the sensor, with switch in “ON” position and engine at stop, does not
show any continuity between main wire and ground, it should be
replaced.
RESERVE FUEL INDICATOR
Remove the reserve fuel sensor from the tank.
Move the float towards the threaded part of the sensor and connect the
two wire terminals to a tester.
There must be continuity.
THERMOSWITCH
The cooling fan motor is operated by a thermoswitch mounted on the
radiator. If the fan does not start, link the two wires connected to the
switch, with a spare wire.
Turn ignition to “ON”. The fan motor must turn. If it does not, check the
battery voltage between the connector and ground (ignition switch must
be “ON”).
If there is no voltage, check for a burned or defective fuse, or for a dis-
connected or short circuited connector,
If the fan turns, check the thermoswitch in the following manner:
Drain the cooling fluid.
Remove the thermoswitch from the radiator.
Heat the cooling fluid in a container and suspend the thermoswitch in it.
Check the temperature where the switch opens and closes.
Make sure there is no continuity at room temperature; gradually raise the
temperature of the cooling fluid.
The switch must have continuity at 92 ± 3°C.
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