APRILIA TUONO V4 R 2010 Service Station Manual page 170

Electrical system
activation. The continuity of the wiring is necessary for correct activation: no error indications
are displayed in case of lack of activation
Injector cylinder 2
•
The injection relay (No. 33 in the wiring diagram, placed under saddle, next to the battery
positive, CHECK, however, the identification of the relay with the colour of the cables) is
energised for 5 seconds and the injector cable connected to control unit 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
Injector cylinder 3
•
The injection relay (No. 33 in the wiring diagram, placed under saddle, next to the battery
positive, CHECK, however, the identification of the relay with the colour of the cables) is
energised for 5 seconds and the injector cable connected to control unit 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
Injector cylinder 4
•
The injection relay (No. 33 in the wiring diagram, placed under saddle, next to the battery
positive, CHECK, however, the identification of the relay with the colour of the cables) is
energised for 5 seconds and the injector cable connected to control unit 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
DIAGNOSIS INSTRUMENT: ELECTRICAL ERRORS
Injector cylinder 1 P0201
•
short circuit to positive/ short circuit to negative / open circuit
Error cause
•
If shorted to positive: excessive voltage has been detected at PIN 8. 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 the diagnosis instrument and check the voltage on the orange/red cable on the
injector connector (if there is voltage): if there is voltage, restore the filter box cable harness.
If there is no voltage, replace the sensor
ELE SYS - 170
TUONO V4 R