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Electrical system
The injection relay (No. 33 in the wiring diagram, placed under the 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 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
Navigator and check voltage at connector PIN 28: if there is voltage, restore the cable har-
ness; 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
Navigator and check voltage at connector PIN 27: if there is voltage, restore the cable har-
ness; 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 - 200
RSV4 Factory a-PRC
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