APRILIA Tuono V4 1100 Factory Service Station Manual page 262

Electrical system
•
The injection ECU cannot send CAN signals; it receives signals from the instrument panel:
the control unit may need replacing.
This error is indicated by lighting up in a fixed manner the general warning light.
Troubleshooting:
•
Replace the Marelli control unit.
NOTE
THE PRESENCE OF THIS ERROR DETERMINE THE DEACTIVATION OF THE TRACTION CON-
TROL AND THE CRUISE CONTROL.
U0140 CAN line to the instrument panel
Electrical diagnosis:
•
no signal.
Error cause:
•
No signal is received from the instrument panel.
This error is indicated by lighting up in a fixed manner the general warning light.
Troubleshooting:
•
Check the connector of the instrument panel: if not OK, restore; if OK, check the continuity
of the two lines from the instrument panel connector to the VEHICLE connector of the Marelli
control unit: if not OK, restore the cable harness; if OK, replace the instrument panel.
NOTE
THE PRESENCE OF THIS ERROR DETERMINE THE DEACTIVATION OF THE TRACTION CON-
TROL AND THE CRUISE CONTROL.
U1125 Frame counter "Sensor Box" CAN line diagnosis
Electrical diagnosis:
•
Intermittent signal or communication error
Error cause:
•
Probable bad contact in the CAN line.
This error is not indicated even in the ATT status.
Troubleshooting:
•
Perform the check procedure for the VEHICLE connector at PIN 66 and PIN 80 an of the
PIN B2 and PIN B3 of the engine-vehicle wiring harness connector; if it is NOT OK restore
and if it is OK perform the check procedure for PIN 2 and PIN 3 of inertial platform (Sensor
Box) connector; if NOT OK restore and if OK check the general operation of the Marelli
control unit and of the inertial platform (Sensor Box); in case of anomalies, replace the part
concerned.
NOTE
THIS ERROR DISABLES THE TRACTION CONTROL.
U1129 "LH handlebar" CAN line diagnosis
Electrical diagnosis:
ELE SYS - 262
Tuono V4 1100 Factory