12.11 Use Of The Check Lamp For The Defects Detection - MOTO GUZZI V10 CENTAURO Werkstatt-Handbuch

The value pressure must remain the same for several minutes.
• If the pressure should lower in a short time proceed as follows:
- Insert the ignition key and while the pumps is running close the tubes in the position «1» using the tripping pliers
with two pieces of steel foil in order to avoid damages to the tube Fig. 12-17.
The pressure reading of the manometer «A» - Fig. 12-17 must be stable in the range of 3 ± 0.2bar.
If the pressure lowers this is due to the not perfect sealing of the non return valve of the fuel pump «B» - Fig.
12-17.
If the circuit pressure should continue to decrease the cause might be due to the pressure regulator or in an
injector which does not close perfectly.
• If the pressure reading of the manometer is lower than 3 ± 0.2bar or reaches 3 ± 0.2 bar very slowly that can
be caused by a blockage between the pump and the fuel filter or from some obstruction in the induction to the
pump.
WARNING
The filter must be changed every 10.000 Km.
While installing the feeding circuit be very careful that no dirt or dust enters the conduits, because this
could damage the components.
1

12.11 USE OF THE CHECK LAMP FOR THE DEFECTS DETECTION

The "CHECK LAMP" is a simple tester that allows the show if there is any fault that is detected by the electronic
control unit I.A.W. during the motor operation.
The signalling of the faults is coded by a series of light pulses of the check lamp.
The decoding and the explanation of these pulses together with further information on how to operate will be
described further on in this manual.
The electronic control unit I.A.W. equipped with this fault detection system are usually called "Electronic control
unit with self diagnosis".
This is because the system is able to detect the type of faults, and memorise them even if the faults are no longer
there. The "CHECK LAMP" tester system will allow the operator to retrieve this information.
Therefore the "CHECK LAMP" more than a tester, can be considered as a real automatic "diagnosis system".
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12-17