Gilera 633721, Workshop Manual

Page: 242 / 407

- Control unit
- Decoder
- Immobilizer aerial
- Master key with integrated transponder (brown key)
- Service key with integrated transponder (black key)
- H.V. coil
- Diagnostic LED
The diagnostic LED also control the function of the immobiliser lamp. This function is activated every
time the key switch is turned to position "OFF" or the emergency stop switch is turned to "OFF" and, in
order not to prejudice the battery charge, remains active for 48 hours. When the key switch is turned
to "ON", it interrupts the function of the immobiliser lamp and a start enable lamp comes "ON". The time
for which this lamp stays on depends on the programming of the control unit. In the event that the LED
goes out irrespective of the position of the key switch and/or the instrument panel is not initialised, check:
•
Battery voltage is "ON"
•
That none of fuses 1, 3, 7 or 8 has blown
•
Power supply to the control unit as specified below:
Disconnect the connector from the control unit. Check the following conditions:
With the key switch in position "OFF":
•
Battery voltage between terminals 17-23 and terminals 17-chassis ground (continuous pow-
er supply). In the event that there is no voltage, check that fuse 1 has not blown and check
the corresponding wiring.
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). In the event that there is no voltage, check:
1. The condition of fuse No. 1 and the corresponding wiring.
2. The function of the engine stop remote control.
•
Check for voltage on the blue/grey cable at the exit from the engine stop remote control. In
the event that there is no voltage, check:
1. The contacts of the key switch.
2. The function of the engine stop switch, then for the presence of earth on the green/blue cable and
the engine stop switch with the stand raised and the engine stop switch in position RUN.
3. The function of the diode of the engine stop remote control.
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.
In any case it is advisable to use resistive spark plugs.
Injection
Nexus 500 euro 3
INJEC - 242