APRILIA Atlantic 300 Service Station Manual page 80

Electrical system
56. CDI control unit
COOLANT THERMISTOR OPERATION CHECK
•
Remove the thermistor «1».
•
Connect a tester «2» (ohmmeter func-
tion) to the thermistor «1» as shown in
the figure.
•
Immerse the thermistor «1» in a con-
tainer with coolant «3».
•
In the same container, immerse a ther-
mometer «4» ranging from 0 -150°C
(32 - 302°F).
•
Place the container on a cooker «5»
and heat the fluid slowly.
•
Check the temperature indicated by
the thermometer «4» and the thermis-
tor value «1» indicated on the tester
«2».
Check that the value varies according to the tem-
perature as indicated in the table.
NOTE
REPLACE THE THERMISTOR «1» IF STAND-
ARD VALUES DO NOT VARY OR DIFFER
WIDELY FROM THE ONES INDICATED ON THE
TABLE.
TEMPERATURE/RESISTANCE
Specification
100 (°C) - 212 (°F)
80 (°C) - 176 (°F)
60 (°C) - 140 (°F)
40 (°C) - 104 (°F)
Lights list
Possible Cause
One bulb does not work
No bulb working
The bulbs burn out frequently
ELE SYS - 80
Desc./Quantity
144 Ohm
262 Ohm
512 Ohm
1090 Ohm
T
ROUBLESHOOTING
Check that the headlamps do not vibrate in excessive and that
they do not touch parts of the vehicle without anti-vibration
ATLANTIC 300 i.e.
Operation
Check the bulb.
Check if there is voltage in the bulb holder terminals.
Check the cable harness connections.
Check the fuses.
supports.
Check the cable connections.
Check the voltage regulator.