APRILIA RSV4 Factory Service Station Manual page 186

Electrical system
The injection relay (No. 33 in the wiring diagram, placed under the right side of the saddle; CHECK,
however, the identification of the relay with the colour of the cables) is energised for 5 seconds and the
brown/purple cable of the coil is closed to ground for 2 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: LOGIC ERRORS
Coil 1 P0351
•
shorted to positive / shorted to negative, open circuit.
Error cause
•
If shorted to positive: excessive voltage has been detected at PIN 28 of the ENGINE con-
nector. If the circuit is open, shorted to negative: voltage equal to zero has been detected
at PIN 28 of the ENGINE connector.
Troubleshooting
•
If shorted to positive: disconnect the coil connector, set the key to ON, activate the coil with
Axone and check voltage at connector PIN 28: if there is voltage, restore the cable harness;
if voltage = 0, replace the coil.
•
If the circuit is open, shorted to negative: check electric characteristics of the coil: if not OK,
replace the coil, if OK check the coil connector and the Marelli control unit connector; if not
OK, restore, if OK, check cable continuity between the two cable terminals: if there is not
continuity, restore the cable harness; if there is cable continuity, with key set to ON, check
the ground insulation of the cable (from coil connector or control unit connector), if not OK,
restore cable harness.
Coil 2 P0352
•
shorted to positive / shorted to negative, open circuit.
Error cause
•
If shorted to positive: excessive voltage has been detected at PIN 27 of the ENGINE con-
nector. If the circuit is open, shorted to negative: voltage equal to zero has been detected
at PIN 27 of the ENGINE connector
Troubleshooting
•
If shorted to positive: disconnect the coil connector, set the key to ON, activate the coil with
Axone and check voltage at connector PIN 27: if there is voltage, restore the cable harness;
if voltage = 0, replace the coil.
•
If the circuit is open, shorted to negative: check electric characteristics of the coil: if not OK,
replace the coil, if OK check the coil connector and the Marelli control unit connector; if not
OK, restore, if OK, check cable continuity between the two cable terminals: if there is not
continuity, restore the cable harness; if there is cable continuity, with key set to ON, check
ELE SYS - 186
RSV4 Factory