MOTO GUZZI 1200 SPORT 4V Service Station Manual page 66

Electrical system
•
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: PARAMETERS
Right cylinder injection time
AXONE: ACTIVATIONS
Right injector The auxiliary injection relay (no. 30 in the wiring diagram, placed on the front right side
of the motorcycle, under the saddle; CHECK, however, the identification of the relay with the colour of
the cables) is energised for 5 seconds and the grey/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 dis-
played in case of lack of activation
AXONE: ELECTRICAL ERRORS
Front injector P0202 - shorted to positive / shorted to negative / open circuit.
Error cause
•
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 no continuity, replace the injector.
•
the circuit is open: check the component correct electrical characteristic: if it is not the correct
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 be-
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ELE SYS - 66
1200 SPORT 4V