APRILIA MSS Mana GT ABS, Service Station Manual

Page: 127 / 394

0.7 V at idle speed, check the correct position of the sensor. Phase 1: check if upon dis-
connecting the sensor, the PIN B3 voltage reaches zero: if it reaches zero, replace the
sensor; if it does not reach zero, restore the cable harness (PIN 1 cable shorted to battery
or a cable at 5V).
•
If below the minimum threshold: check if there is continuity between PIN B3 and the ground
connection: if there is continuity, check if upon disconnecting the sensor, the continuity with
the ground connection of PIN B3 is interrupted: if it is interrupted, replace the sensor; if the
continuity with the ground connection remains, restore the cable harness (PIN 1 cable shor-
ted to ground connection).
NOTE
THE SPEED SENSOR FAILURE IS ALSO INDICATED ON THE INSTRUMENT PANEL WITH THE
MESSAGE "GEAR ERROR".
THE "VEHICLE SPEED SENSOR" ERROR WILL APPEAR ON THE DIAGNOSIS INSTRUMENT
Transmission mode control
GEAR MODE CONTROL
Function
To tell the transmission ECU that the driver wishes
to change the gear mode (automatic/manual) and
the type of transmission calibration (touring/
sports/ rain).
Operation / operating principle
The circuit is made up of a switch that, when acti-
vated, modifies the circuit resistance and conse-
quently the voltage detected.
Level in wiring diagram: transmission manage-
ment
Position:
•
gear mode control on vehicle: right light
switch
•
connector: right side, under helmet
compartment, along upper frame
Electrical characteristics
Released switch 860 +/- 5% Ohm
Pressed switch 180 +/- 5% Ohm
Pin-out:
MSS Mana GT ABS
Electrical system
ELE SYS - 127