Sensor Removal - APRILIA SL 750 SHIVER Service Station Manual

Electrical system
tected at VEHICLE PIN 49. This requires a longer recognition time that is counted from zero
each time the clutch is operated, the gear is set to neutral or the engine is shut off.
Troubleshooting
•
if over the maximum limit: replace the sensor.
•
Signal not valid: check the speed sensor connector and the Marelli control unit connector:
if not OK, restore. If OK, check that, with key set to ON and the sensor connector discon-
nected, there is continuity on PIN 1 with the ground connection. If there is no continuity, set
the key to OFF and check that there is continuity between ENGINE PIN 36 and PIN 1 of the
sensor connector. If there is not, replace the control unit; if there is, check that there is voltage
at PIN 3 coming from the control unit (approximately 5V): if there is no voltage, set the key
to OFF and check that there is continuity between the ENGINE PIN 13 and PIN 3. If there
is continuity, replace the control unit; if there is not, restore the cable harness; if there is 5V
voltage, set the key to OFF and check that there is continuity between the VEHICLE PIN 49
and the sensor PIN 2: if there is no continuity, restore the cable harness. If there is continuity,
check that the cam that reads the signal is in good conditions: if it is not, replace it. If it is
OK, replace the sensor .

SENSOR REMOVAL

•
Remove the rear shock absorber.
•
Undo and remove the screw.
•
Disconnect the speed sensor connec-
tor.
•
Rotate the speed sensor and slide it off upwards.
NOTE
IT IS STRICTLY FORBIDDEN TO USE THE VEHICLE WITH THE SPEED SENSOR DISCONNEC-
TED.
BESIDES VEHICLE SPEED, THIS SENSOR COMMUNICATES OTHER OPERATION PARAME-
TERS TO THE CONTROL UNIT.
See also
ELE SYS - 32
SL 750 SHIVER