APRILIA MSS Mana GT ABS Service Station Manual page 147

MSS Mana GT ABS
•
The transmission ECU cannot send CAN signals; it receives signals from the instrument
panel and the injection control unit: the control unit may need replacing.
Troubleshooting
•
Replace transmission ECU.
CAN line to instrument panel Code 9007 - 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 transmission ECU
connector: if not OK, restore the cable harness; if OK, replace the instrument panel.
CAN line to injection ECU Code 9006 - no signal
Error cause
•
No signal arrives from the injection 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 Marelli control unit.
AXONE / FUEL INJECTION system:
ERRORS
Mute Node CAN Line, U1601 - Mute Node
Error cause
•
The control unit cannot send CAN signals; it receives signals from the instrument panel and
the transmission ECU: the control unit may need replacing.
Troubleshooting
•
Replace injection ECU.
CAN line, no signal, U1602- Bus Off
Error cause
•
No communication on CAN line (PIN B4 and/or PIN B5): problem on the whole network (for
example, battery cut-off or short circuited or shorted to ground).
Troubleshooting
•
Check the Marelli control unit connector: if not OK, restore; if OK, check the earth insulation
of the two CAN lines from PIN 20 and PIN 51 of the VEHICLE connector: If not OK, restore
the cable harness; if OK, check continuity of the two CAN lines from the Marelli control unit
VEHICLE connector to the filter casing large connector and to the instrument panel con-
Electrical system
ELE SYS - 147