DIAGNOSTIC
Diagnostic resources
A diagnostic led notifies the rider of the presence of faults. The same led also enables the repairer to
“read” a memory in which the codes identifying a functioning fault are stored.
A diagnostic tool may be connected to the ECU to read in its memory the fault codes, machine
functioning parameters, etc.
System diagnostic is carried out by the ECU which checks all the components connected to it.
The ECU memorises all faults detected and puts them into three categories depending on their importance
or effect on machine functioning.
There are two ways of carrying out diagnostic of the system:
- Manually via the test led
- Automatically with the diagnostic tool.
Manual diagnostic procedures
Fault reading procedure
Fault reading is by “reading” the diagnostic led flashes. The number of flashes represents a code
enabling reference to the workshop manual to identify the problem.
Note: This procedure cannot function if the throttle unit is disconnected or its harness is cut.
Procedure:
1. Turn off the ignition
2. Fully open the throttle (accelerator cable properly adjusted)
3. Hold the throttle fully open
4. Turn on the ignition holding the throttle open
5. The led comes on for 2 seconds, goes off for 3 seconds, then comes on
6. Close the throttle as soon as the led lights
7. Diagnostic begins each code (x flashes of 0.5 seconds) is precede by the led lighting for 4 seconds
and ends with the led going off for 4 seconds. All the codes are sent one after the other and all of
the codes are repeated 4 times after which the codes are cleared automatically. If you do not wish
to clear the codes, turn off the ignition before the procedure is repeated 3 times.
8. Note the fault codes obtained
9. Repair the faults
10. Then clear the fault codes.
11. Then test the vehicle and check that the codes do not re-appear.
Diagnostic
Diagnostic led
The led comes on when the ignition is turned on to check it is functioning and goes off when the engine
starts if there are no faults.
In case of a fault, the led notifies the rider.
There are three fault levels on the machine:
1. Serious safety fault or one which may destroy the engine, the machine must be stopped. The light
comes on and stays on.
2. Serious fault affecting the functioning or riding comfort.
The light flashes.
3. Minor fault.
The light stays off.
Faults codes and prioritie levels: - priorities are in brackets (1-stop the scooter and go imediately to service, 2-go to service as soon as posibble, 3-can wait 1 or 2 days).
Fault code description (Priority level):
1 engine overheating (1)
2 speed sensor circuit fault (2)
3 potentiometer adaptation fault (2)
4 potentiometer track 1 adaptation fault (3)
5 potentiometer track 2 adaptation fault 3)
6 potentiometer track 1 fault 2)
7 potentiometer track 2 fault 2)
8 potentiometer fault 1)
9 battery voltage fault 1)
10 oil pump fault 1)
11 air injector fault (2)
12 petrol injector fault (2)
13 ignition fault (2)
14 petrol pump fault (2)
15 engine overspeed (3)
16 faulty power supply to sensors (3)
17 engine speed incoherent fault on start-up (2)
18 engine temperature sensor circuit fault (3)
19 not allocated -
20 temperature gauge fault (3)
21 control led fault (3)
22 faulty power supply to sensors (2)
23 altitude sensor circuit fault (3)
Diagnostic resources
A diagnostic led notifies the rider of the presence of faults. The same led also enables the repairer to
“read” a memory in which the codes identifying a functioning fault are stored.
A diagnostic tool may be connected to the ECU to read in its memory the fault codes, machine
functioning parameters, etc.
System diagnostic is carried out by the ECU which checks all the components connected to it.
The ECU memorises all faults detected and puts them into three categories depending on their importance
or effect on machine functioning.
There are two ways of carrying out diagnostic of the system:
- Manually via the test led
- Automatically with the diagnostic tool.
Manual diagnostic procedures
Fault reading procedure
Fault reading is by “reading” the diagnostic led flashes. The number of flashes represents a code
enabling reference to the workshop manual to identify the problem.
Note: This procedure cannot function if the throttle unit is disconnected or its harness is cut.
Procedure:
1. Turn off the ignition
2. Fully open the throttle (accelerator cable properly adjusted)
3. Hold the throttle fully open
4. Turn on the ignition holding the throttle open
5. The led comes on for 2 seconds, goes off for 3 seconds, then comes on
6. Close the throttle as soon as the led lights
7. Diagnostic begins each code (x flashes of 0.5 seconds) is precede by the led lighting for 4 seconds
and ends with the led going off for 4 seconds. All the codes are sent one after the other and all of
the codes are repeated 4 times after which the codes are cleared automatically. If you do not wish
to clear the codes, turn off the ignition before the procedure is repeated 3 times.
8. Note the fault codes obtained
9. Repair the faults
10. Then clear the fault codes.
11. Then test the vehicle and check that the codes do not re-appear.
Diagnostic
Diagnostic led
The led comes on when the ignition is turned on to check it is functioning and goes off when the engine
starts if there are no faults.
In case of a fault, the led notifies the rider.
There are three fault levels on the machine:
1. Serious safety fault or one which may destroy the engine, the machine must be stopped. The light
comes on and stays on.
2. Serious fault affecting the functioning or riding comfort.
The light flashes.
3. Minor fault.
The light stays off.
Faults codes and prioritie levels: - priorities are in brackets (1-stop the scooter and go imediately to service, 2-go to service as soon as posibble, 3-can wait 1 or 2 days).
Fault code description (Priority level):
1 engine overheating (1)
2 speed sensor circuit fault (2)
3 potentiometer adaptation fault (2)
4 potentiometer track 1 adaptation fault (3)
5 potentiometer track 2 adaptation fault 3)
6 potentiometer track 1 fault 2)
7 potentiometer track 2 fault 2)
8 potentiometer fault 1)
9 battery voltage fault 1)
10 oil pump fault 1)
11 air injector fault (2)
12 petrol injector fault (2)
13 ignition fault (2)
14 petrol pump fault (2)
15 engine overspeed (3)
16 faulty power supply to sensors (3)
17 engine speed incoherent fault on start-up (2)
18 engine temperature sensor circuit fault (3)
19 not allocated -
20 temperature gauge fault (3)
21 control led fault (3)
22 faulty power supply to sensors (2)
23 altitude sensor circuit fault (3)
