Technical data

Electrical Equipment

chap. 6

6-15

Release 00 2002-09

Atlantic 500

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).

Observe the pump polarity.

CAUTION

AIR THERMISTOR FUNCTION CHECK

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.

CAUTION

Temperature °C

0 9750

10 5970

20 3740

30 2410

Resistance

ΩΩ

Ω

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).

(direct current)