APRILIA MSS Mana GT ABS Service Station Manual page 148

Electrical system
nector: if not OK, restore the cable harness; if OK, check that the two lines are not short
circuited to positive testing each of the 3 connectors (Marelli control unit connector, filter
casing large connector and instrument panel connector) with 1 connector disconnected at
a time and by setting the key to ON: If not OK, restore; if OK, replace the Marelli control unit.
CAN line to instrument panel, U1701 - No signal
Error cause
•
No signal arrives to the instrument panel from either CAN line cables.
Troubleshooting
•
Check the connector of the instrument panel: if it is not OK, restore; if it is OK, check the
continuity of the two lines from the instrument panel connector to the injection ECU con-
nector: if not OK, restore the cable harness; if OK, replace the instrument panel.
CAN line to transmission ECU, U1702 - No signal
Error cause
•
No signal arrives from the transmission ECU from either CAN line cables.
Troubleshooting
•
Check the transmission ECU connector and the Marelli control unit connector: if they are
not OK, restore; if they are OK, check the continuity of the two lines from the transmission
ECU connector and from the Marelli control unit connector: if it is not OK, restore the cable
harness; if it is OK, replace the transmission ECU.
ELE SYS - 148
MSS Mana GT ABS