APRILIA RSV4 RR 2017 Service Station Manual page 235

RSV4 RR-RF
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Carry out the Marelli control unit and the engine-vehicle wiring harness connectors check
procedure: if not OK, restore; if OK, check the ground insulation of the two CAN lines from
PIN 66 and PIN 80 of the VEHICLE connector: if not ok, restore the wiring harness; if ok,
check the continuity of the CAN lines from the VEHICLE connector of the Marelli control unit
to the instrument panel connector, or to the LH lights switch connector, or to the ABS mod-
ulator connector: if not ok, restore the wiring harness; if ok, check that the lines are not in
short circuit to positive, testing all 5 connectors (Marelli control unit, engine-vehicle wiring
harness connector, instrument panel connector, LH lights switch connector, ABS modulator
connector) with 1 connector disconnected at a time and turning the key to ON position: If
not OK, restore; if OK, replace the Marelli control unit.
NOTE
THIS ERROR DISABLES THE TRACTION CONTROL AND THE CRUISE CONTROL.
U0002 CAN Line "Mute Node"
Electrical diagnosis:
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Mute Node.
Error cause:
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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
THIS ERROR DISABLES THE TRACTION CONTROL 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
THIS ERROR DISABLES THE TRACTION CONTROL AND THE CRUISE CONTROL.
U1125 Frame counter "Sensor Box" CAN line diagnosis
Electrical diagnosis:
Electrical system
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