Gilera Nexus 500 Workshop Manual page 220

Injection
The tester pages display the list of errors detecta-
ble by the auto-diagnosis.
Errors detected by the auto-diagnosis are marked
by one or two reference dots.
They are arranged on two lines:
Line A = current failures (present)
Line M = stored failures
Errors detectable by the auto-diagnosis may refer to the following system circuits or sectors of the
control unit:
- Throttle valve position signal
- ambient pressure signal
- coolant temperature signal
- sucked air temperature signal
- wrong battery voltage
- Injector and relevant circuit
- HV coil and relevant circuit
- Stepper and relevant circuit
- Pump relay circuit
- Electric fan relay circuit
- RAM memory
- ROM memory
- EEPROM
- Microprocessor
- Signals panel (stroke - revolution signal - unsteady cycle)
Underlined failures cause the engine to stop.
In the other cases, the engine works managed by the basic data.
Deleting stored failures
After mounting any failures, connect the diagnostic
tester.
Select the menu on the "errors deleting" function.
Press "OK" and follow the instructions. Perform a
trial cycle and check whether the failure occurs
again.
Specific tooling
020460Y Scooter diagnosis and tester
For troubleshooting for any faults see the related chapter sections.
INJEC - 28
Nexus 500