APRILIA SL 750 SHIVER Service Station Manual page 110

Electrical system
energised for 5 seconds and the grey/green 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.
Rear injector
The auxiliary injection relay (No. 42 in the wiring diagram, placed under fuel tank, right side, third relay
starting from the front; 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 displayed in case
of lack of activation.
AXONE: ELECTRICAL ERRORS
Front cylinder injector P0201 - short circuit to positive / short circuit to negative / open circuit.
Error cause
•
If shorted to positive: excessive voltage has been detected at PIN 50 of the ENGINE 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, set key to ON, activate the compo-
nent with Axone and check the voltage on the filter casing grey/green cable on the filter
casing small connector towards the Marelli control unit: if there is voltage, restore the cable
harness between the filter casing connector and the Marelli control unit. If there is no voltage,
reconnect the connector and check if there is voltage at PIN -: if there is voltage, restore the
filter casing cable harness. If there is not, replace the sensor.
•
if shorted to negative: disconnect the injector connector, set the key to ON and check if there
is a ground connection on the grey/green cable: if there is, restore the cable harness be-
tween the filter casing connector and the Marelli control unit; if there is not, reconnect the
connector and disconnect the injector connector and check if there is a ground connection
on PIN -: if there is voltage, restore the filter casing cable harness. If there is not, replace
the injector.
•
the circuit is open: check the component correct electrical characteristic: if it is not correct,
replace the component; if it is correct, check the filter casing small connector, the connector
on the component and the Marelli control unit connector: If not OK, restore; if OK, check
cable continuity between ENGINE PIN 50 and component PIN - and restore the cable har-
ness.
Front cylinder injector P0202 - See front injector
Error cause
ELE SYS - 52
SL 750 SHIVER