Fuel Pump Check; Air Thermistor Function Check - APRILIA Atlantic 500 Workshop Manual

Electrical Equipment

FUEL PUMP CHECK

• Supply terminals 1 and 4 of the pump connector
with a 12V tension (c.c.).
• Verify that the pump works, emitting the
characteristic hum, and check on the manometer
that the supply pressure reaches at least i 150
KPa (1.5 bar).
CAUTION
Observe the pump polarity.

AIR THERMISTOR FUNCTION CHECK

CAUTION
During reassembly ensure the correct coupling of
the electrical connector (1).
• Remove the thermistor (2).
• Connect a multimeter (3) (set to ohm meter mode)
al thermistor (2), as illustrated in the diagram.
• Immerse the thermistor in a container (4)
containing water.
• In the same container immerse a thermometer (5)
with 0 -150 °C gauge (32 -302 °F).
• Place the container on a hotplate (6) and slowly
heat the liquid.
• Check the temperature indicated on the
thermometer (5)and the value of the thermistor
indicated on the multimeter.
Verify that the values vary in relation to the temperatu-
re as indicated.
Temperature °C
0
10
20
30
NOTE
If the values do not change as the temperatu-
re changes, or change too much from those given in
the table, replace the thermistor (2).
chap. 6
Resistance Ω Ω Ω Ω Ω
9750
5970
3740
2410
Release 00
Atlantic 500
(direct current)
2
1
2002-09
6
6-15