APRILIA MSS Mana GT ABS Service Station Manual page 137

MSS Mana GT ABS
the electrical motor and set the position of the driving half-pulley. Phase 1: check continuity
of the red cable and the black cable between the electrical motor connector and the control
unit connector: if they are not OK, restore the cable harness; if they are OK, check that there
is not continuity on the circuit of the electrical motor and replace it.
•
If input current is excessive: check the driving half-pulley movement system mechanically
(excessive friction material).
•
If the signal is not valid: set the key to key ON and check the voltage value at PIN A8 and
B8 which should be approximately 3 V at both PINS; if there is voltage similar to battery
voltage or there is continuity with the ground in one of the two PINS, restore the cable har-
ness; otherwise, replace the transmission ECU.
Drive belt replacement due to wear
•
Check through the diagnosis instrument for any errors in the transmission ECU from the
"errors display" menu. Erase them if necessary.
•
Take the measurement of the gearshift stroke to identify the category to which it belongs.
NOTE
THIS PROCEDURE IS VALID EVEN IN THE EVENT OF REMOVAL AND/OR REPLACEMENT OF
COMPONENTS OF THE VARIATOR UNIT.
•
Replace the transmission belt.
•
Perform the potentiometer reset operations from the "Settings" menu of the diagnosis in-
strument. Delete any errors.
•
Perform the gearshift stroke category operations from the "settings" menu of the diagnosis
instrument.
CAUTION
AFTER ENTERING THE GEARSHIFT STROKE CATEGORY FROM THE "SETTINGS" MENU OF
THE DIAGNOSIS INSTRUMENT, YOU MUST PERFORM A KEY OFF/ON TO STORE THE DATA
ON THE CONTROL UNIT.
•
Check that the gearshift stroke category has been stored correctly from the "parameters"
menu of the diagnosis instrument.
•
Perform the belt replacement operation from the "parameters" menu of the diagnosis in-
strument.
•
To determine the gearshift class category, see the procedure in chapter "Motor - Automatic
transmission - Driving pulley fitting"
See also
Refitting the driving pulley
DRIVING PULLEY CONTROL ELECTRICAL MOTOR
Function
Electrical system
ELE SYS - 137