MOTO GUZZI California 1400, Instructions Manual

Page: 137 / 411

Fuel pump
Function
Fuel pump: keeps pressure of the injectors supply
duct.
Level in electrical circuit diagram:
Injection load relay
Location:
•
on the vehicle: under the tank.
•
connector: near the fuel pump (2 ways,
black).
Electrical specifications:
PIN 1-2: 0.5 - 1 ohm;
Pin out:
1. + 12 V (orange/green cable)
2. Ground (blue cable)
CAUTION
BEFORE CARRYING OUT ANY TROUBLESHOOTING,
CAREFULLY READ THE GENERAL TROUBLESHOOTING
CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGIN-
NING OF THE CHECK AND CONTROL SECTION IN THE
ELECTRICAL SYSTEM CHAPTER.
DIAGNOSTICS INSTRUMENT: ACTIVATION
Fuel pump
NOTE: The auxiliary injection relay (No. 35 on the electrical circuit diagram, in the two relay box, how-
ever VERIFY the identification of the relay with the colour of the cables) is energised for 30 seconds.
The continuity of the wiring is necessary for correct activation: no error indications are displayed in case
of lack of activation
DIAGNOSTICS INSTRUMENT: ELECTRICAL ERRORS
fuel pump relay control P0230
•
shorted to positive / open circuit, shorted to negative.
Error cause
•
If shorted to positive: excessive voltage has been detected at PIN 73 of the VEHICLE con-
nector. If the circuit is open, shorted to negative: voltage equal to zero has been detected
at PIN 73 of the VEHICLE connector.
Troubleshooting
•
If shorted to positive: check whether the relay electrical specifications are correct by dis-
connecting it from the cable harness. If are not OK, replace the relay; if OK, restore the cable
harness (Brown/Black cable).
California 1400
Electrical system
ELE SYS - 137