MOTO GUZZI Stelvio 1200 NTX ABS Service Station Manual page 73

Stelvio 1200 NTX ABS
•
Shorted to positive: disconnect the injector connector, take the key to ON and check if there
is voltage on the grey/red cable: if there is voltage, restore the cable harness. If there is no
voltage, replace the injector.
•
If shorted to negative: disconnect the injector connector, take the key to ON and check if the
grey/red cable has continuity to the ground connection: if there is continuity to ground, re-
store the cable harness; if there is not continuity, replace the injector
•
The circuit is open: check the component correct electrical characteristic: if it is not the cor-
rect one, replace the component; if it is correct, check the connector on the component and
the Marelli control unit connector: If they are not OK, restore. If OK, check cable continuity
between PIN 28 of the BROWN connector and the component PIN - and restore the cable
harness.
AXONE: ACTIVATION
Right injector: Operation for 4 ms, 5 times
The auxiliary injection relay (No. 29 in the wiring diagram, placed on the front right side of the motorcycle,
in the auxiliary fuses/relays box, first relay to the left starting from the front; CHECK, however, the
identification of the relay with the colour of the cables) is energised for 5 seconds and the blue/red cable
of the injector is closed to ground for 4 ms per second. Disconnect the 4-way connector of the fuel pump
to be able to hear the relay and injector activation. The continuity of the wiring is necessary for correct
activation: no error indications are displayed in case of lack of activation.
AXONE: ELECTRICAL ERRORS
Right injector P0202 - shorted to positive / shorted to negative / open circuit.
Error cause
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If shorted to positive: excessive voltage has been detected at PIN 37 of the BROWN con-
nector.
•
If shorted to negative: no voltage has been detected.
•
If the circuit is open: an interruption has been detected
Troubleshooting
•
If shorted to positive: disconnect the injector connector, take the key to ON and check if
there is voltage on the blue/red cable: if there is voltage, restore the cable harness. If there
is no voltage, replace the injector.
•
If shorted to negative: disconnect the injector connector, take the key to ON and check if the
blue/red cable has continuity to the ground connection: if there is continuity to ground, re-
store the cable harness; if there is not continuity, replace the injector
•
The circuit is open: check the component correct electrical characteristic: if it is not the cor-
rect one, replace the component; if it is correct, check the connector on the component and
the Marelli control unit connector: If they are not OK, restore. If OK, check cable continuity
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Electrical system
ELE SYS - 73