PIAGGIO 2005 XEVO 400ie, Workshop Manual

Page: 260 / 376

48. Instrument panel
50. HV coil
51. Immobilizer aerial
52. Decoder
53. Injection ECU
54. Intake air temperature sensor
55. Fuel pump
56. Diagnosis connector
57. Electric fan remote control
58. Engine rpm sensor
59. Stepper motor
60. Engine temperature sensor
61. Throttle valve potentiometer
62. Lambda probe
The electric fan system is powered by a remote
control switch connected to the continuous power
supply controlled by the electronic control unit of
the injection system.
The electronic control unit of the injection system
controls the electric fan in relation to the measured
engine temperature.
If prolonged running of the electric fan is noticed,
check the following carefully before starting to
check the electrical system:
- Coolant level in the expansion tank - bleeding of
the inlet hose to the engine
- Bleeding of the outlet from the head
- Function of the thermostat
- Function of the pump
For these checks, see chapter "Cooling system".
To check the circuit, proceed as follows:
1 - Connect the diagnostic tester. Set the switch to
"ON" with switch to "RUN" and side stand raised.
Select the "ERRORS" function. Check whether the
control unit has detected any failures relating to the
electric fan control circuit.
YES go to 8 NO go to 2
Injection
XEVO 400ie
INJEC - 260