PIAGGIO 2005 XEVO 400ie, Workshop Manual

Page: 215 / 376

This allows the driver clear operation without having to do anything other than just turning the key. The
Immobiliser system consists of the following components:
- electronic control unit
- decoder
- immobilizer aerial
- master key with integrated transponder (brown key)
- service key with incorporated transponder (black key)
- HV coil
- diagnosis LED
The diagnosis LED also works as a theft-deterrent blinker. This function is activated every time the
ignition switch is turned to the "OFF" position, or the emergency stop switch is turned to the "OFF"
position. It remains activated for 48 hours in order not to affect the battery charge. When the ignition
switch is turned to the "ON" position, the theft-deterrent blinker function is deactivated. Subsequently,
a flash confirms the switching to the "ON" status. The duration of the flash depends on the programming
of the electronic control unit If the LED is off regardless of the position of the ignition-key switch and/or
the instrument panel is not initiated, check if:
•
there is battery voltage
•
efficiency of fuse No. 7
•
there is power to the control unit as specified below:
Disconnect the connector from the control unit. Check the following conditions:
With the key switch set to OFF:
•
Battery voltage between terminals 17-23 and terminals 17-chassis ground (continuous pow-
er supply). If there is no voltage, check that fuse No. 6 is in good conditions.
With the key switch in position ON and the engine stop switch in RUN:
•
Battery voltage between terminals 26-23 and terminals 26-chassis ground (continuous pow-
er supply). If there is no voltage, check:
1. that fuses No. 11 and No. 2 and their wirings are in good conditions.
2. that the engine stop remote control switch is in good conditions.
•
Check for voltage on the white-black cable at the exit from the engine stop remote control
switch. If there is no voltage, check:
1. key switch contacts
2. the condition of the engine stop switch, then the ground connection of the green/black cable of the
engine stop remote control switch with the stand lifted and the engine stop switch in the RUN position.
3. that the engine stop remote control switch diode is in good conditions.
If no fault is found, replace the control unit.
N.B.
AN ACCIDENTAL LOSS OF THE SERVICE KEY PROGRAMMING CAN ARISE FROM GENERAL
FAULTS OF THE IGNITION SYSTEM. IN THIS CASE, CHECK THE HV LINE SHIELDING.
XEVO 400ie
Injection
INJEC - 215