Cagiva Navigator, Workshop Manual, Page: 68 / 407

C.24
INJECTION - AIR INTAKE SYSTEM
AUTO-DIAGNOSTIC FUNCTION
An auto-diagnostic function is incorporated in the ECM. This function has two modes: the user mode and the
dealer mode. The user can only utilise the LCD display and the LED indicator. To check the functions of the FI
system devices, it is necessary to prepare the dealer mode and utilise the special tool for the reading of the
malfunction codes.
USER MODE
MALFUNCTION LCD (DISPLAY) LED INDICATION INDICATION MODE
INDICATION
NO
Engine coolant Engine coolant ––––––
temperature temperature/oil pressure
YES
Engine coolant
The LED lights up
“FI” or temperature
temperature and the is indicated every
letters “FI” *1 second.
The engine turns over
The engine does
Engine coolant
The LED lights up
“FI” or temperature
not turn over temperature and the is indicated every
letters “FI” *2 second.
Letters “FI” *3
The LED lights up
The letters “FI” are
and flashes
indicated
continuously
*1
When the ECM does not receive one of the sensor signals, the security system becomes operative and the injec-
tion is not interrupted. In this situation, the LCD display panel indicates “FI” and the engine coolant temperature
and the machine continue to function.
*2
When the ECM does not receive the sensor signals of the camshaft position or the crankshaft position, the injection
signal is interrupted. The LCD display panel indicates “FI” and the engine coolant temperature. The machine stops
functioning.
*3
When the crash signal, the ignition signals #1 and #2, the injector signals #1 and #2, the fuel pump relay signal or
the ignition switch signal do not reach the ECM, the injection is interrupted. The LCD display panel indicates “FI”
when the starter button is pushed. The machine stops functioning.
“CHEC”: The panel indicates “CHEC” when no signals are received from the ECM for five seconds.
For example:
The ignition switch is in the ON position and the engine kill button is OFF. The LCD display panel does
not receive any message from the ECM and indicates instead “CHEC”. If “CHEC” is visualised, the
problem cannot be visualised on the LCD display panel. It is necessary to check the wiring system
between the ECM and the connectors of the panel.
In this case, the probable cause is:
The engine kill switch is in the OFF position.
The system of interconnection side stand/gearchange position sensor does not function.
The ignition fuse has blown.
The LED illuminates also when the engine coolant temperature is high or when the oil pressure is low.