Checking The Fall Sensor; Checking The Coolant Thermistor Operation - APRILIA RSV mille 956X Service And Repair Manual

ELECTRICAL SYSTEM

6.4.7 CHECKING THE FALL SENSOR

With the engine switched off:
Remove the riders saddle, see 7.1.1 (REMOVING THE
RIDER SADDLE).
Check whether the sensor (1) is fitted correctly (with the
arrow inscribed on the rubber element pointing up).
Disconnect the two-way connector (2) (coloured white/
grey) and take the measurements (on the sensor-side
terminals).
a
CAUTION
When reassembling, make sure the electric connec-
tor (2) is plugged in properly.
Using a pocket tester (scale x 100 kΩ), measure the re-
sistance between the terminals of the black and white/
black (N - Bi/N) cables.
Standard value: resistance 62 kΩ ± 15 %.
Remove the sensor (1) complete with rubber element
from its housing and tilt it sideways at an angle of over
45° (simulating the condition of a vehicle resting on the
ground).
Standard value: 0 − 1 Ω.
If the resistance is any value other than that pre-
scribed, the sensor (1) must be changed.
Repeat the procedure, tilting the sensor in the opposite
direction.
6.4.8 CHECKING THE COOLANT THERMISTOR
OPERATION
NOTE
The value of the temperature measured by the
front cylinder thermistor (right-hand side) is sent up on
the right-hand display; that measured by the rear cylinder
thermistor (left-hand side) is sent to the electronic unit.
Remove the thermistor (3), see 5.5 (REMOVING THE
COOLANT THERMISTORS).
Connect a tester (4) (set as an ohmmeter) to the ther-
mistor (3), as illustrated in the figure.
Immerse the thermistor (3) in a container (5) holding
coolant.
Immerse a thermometer (6) with a 0 to 150 °C (32 to
302 °F) range in the same container.
Place the container on a burner (7) and slowly warm up
the coolant.
Check the temperature indicated on the thermometer
(6) and the thermistor (3) value indicated by the tester.
Make sure that the value varies according to the temper-
ature, as indicated.
Coolant
temperature
(°C) (°F)
20 68
40 104
60 140
80 176
100 212
If values do not vary, or if they depart excessively
from those indicated in the table, change the thermis-
tor (3).
Repeat the procedure for the other thermistor.
6 - 12
Standard values
(Ω) (± 10%)
1960 - 2940
800 - 1200
400 - 700
200 - 400
120 - 250
RSV mille