APRILIA MSS Mana GT ABS Service Station Manual page 134

Electrical system
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There is a malfunction in the handlebar gear upshift control.
Troubleshooting
•
If, besides the error, the status of "Handlebar gear upshift control" indicates "Invalid data":
the instrument panel waits to detect a voltage above approximately 1 V at one of either PINS
and at the same time a voltage below approximately 1 V on the other PIN; if this does not
happen, the instrument panel sends the information to the control unit which signals this
error. CASE 1) if the voltage is below 1V on both, with control not activated, it means that a
voltage below 1V, instead of battery, is detected at instrument panel PIN 5; disconnect the
gearshift control connector and read voltage at PIN 5 of the instrument panel: if voltage is
below 1 V, it means that on the blue/purple cable there is a short circuit to ground; if voltage
is above 1 V (approximately battery voltage), replace the gear upshift control sensor. CASE
2) if both voltages are below 1 V with control activated, it means that at that moment a voltage
below 1 V, instead of battery, is detected at PIN 13 of the instrument panel; disconnect the
gearshift control connector and read voltage at PIN 13 of the instrument panel: if voltage is
below 1 V, it means that on the black/purple cable there is a short circuit to ground; if the
voltage is above 1 V (approximately battery voltage), replace the gear upshift control sensor.
CASE 3) if both voltages are equal to battery voltage, with control not activated, it means
that there is an interruption in the circuit from PIN 13 to PIN 30 of the instrument panel or
that PIN 30 does not have a ground connection: check the instrument panel connector and
the gearshift control connector: if they are not OK, restore; if they are OK, check continuity
on the black/purple cable: if it is not OK, restore; if it is OK, check continuity on the brown/
black cable from gearshift control connector to PIN 30 of the instrument panel: if it is not OK,
restore; if it is OK, check continuity of the gearshift control from the gearshift control con-
nector (between black cable and green cable): if it is not OK, replace the control; if it is OK,
check, with key set to key ON, that there is no ground connection in the brown/black cable
and then replace the instrument panel. CASE 4) if both voltages are above 1 V (approxi-
mately battery voltage), with control activated, it means that there is an interruption on the
circuit from PIN 5 to PIN 30 of the instrument panel: check the instrument panel connector
and the gearshift control connector: if they are not OK, restore; if they are OK, check con-
tinuity on the blue/purple cable: if it is not OK, restore; if it is OK, check, with control activated,
that there is not continuity of the gearshift control from the gearshift control connector (be-
tween black cable and yellow cable) and then replace the control.
•
If, besides the error, the status of "Handlebar gear upshift control" indicates "Pressed", check
the control mechanically: If it is not OK, restore; if it is OK, the gear upshift control must be
replaced.
ERRORS
Handlebar gear downshift control - Code 9010 - signal not valid
Error cause
ELE SYS - 134
MSS Mana GT ABS