MOTO GUZZI 2Q000297 Service Station Manual page 153

V7 III ABS
•
Check the engine control unit connector if not OK, restore; if OK, check the ground insulation
of the two CAN lines from PIN 26 and PIN 27 of the engine control unit connector if not OK,
restore wiring harness; if OK, check the continuity of the two CAN lines from the engine
control unit connector to the instrument panel connector if not OK restore cabling, if OK
check that the two lines are not short circuited to positive testing from each of the connectors
(engine control unit, instrument panel connector) with connector at a time disconnected and
turning the key to the ON position If not OK, restore; if OK, replace the engine control unit.
CAN line U0002 MUTE NODE - Mute node.
Error cause
•
The engine control unit is not able to send CAN signals, but to receive signals from the
instrument cluster, ABS control unit, right light switch, it might be necessary to replace the
engine control unit.
Troubleshooting
•
Replace the engine control unit.
ABS control unit "NO NODE" U0121 - No node/frame counter
Error cause
•
Missing communication of the ABS control unit to the CAN line
Troubleshooting
•
Disconnect the ABS control unit connector and check that there is no dirty, oxidised or dam-
aged PIN; if not ok restore, if ok check continuity between PIN 5 and 6 ABS control unit and
PIN 26 and 27 engine control unit; if not ok restore, if ok check continuity between PIN 5
and 6 ABS control unit and PIN 1 and 8 of the instrument cluster; if not ok restore, if ok check
continuity between PIN 5 and 6 ABS control unit and PIN 3 and 4 of the left light switch; if
not ok restore, if ok check that there is no continuity between the two cables of the CAN line
(L and H); if not ok restore, if ok check that there is no continuity between vehicle ground
and the battery positive; if not ok restore, if ok replace the ABS control unit
CAN line D347 - transmission time-out
Error cause
•
Electric malfunction. Open circuit, short circuit to negative, short circuit to positive of one or
both wires of CAN line
Troubleshooting
•
Replace the wiring harness
CAN line 5E11 - Bus Off
Error cause
Electrical system
ELE SYS - 153