Troubleshooting (If The Engine Does Not Start) - APRILIA SL Mille Workshop Manual

ELECTRIC SYSTEM
6.4.2 TROUBLESHOOTING (IF THE ENGINE DOES
NOT START)
Locating a fault in the electrical system
• Position the vehicle on the stand.
• Turn the ignition switch to position "0".
The message"
E
F I" comes up on the right-hand dis-
play for approx. three seconds.
• Press the start pushbutton "CD"for more than four sec-
onds.
If the ignition system is malfunctioning, the message
" E
FI"reappears.
NOTE
If a fault is detected in the electronic system or if
the"
EF I"
message flashes on the multifunction display,
do not start the vehicle so as to avoid secondary damage.
It the ignition system is malfunctioning and the message
"E F I" fails to reappear, make sure there are no breaks in
the white/purple (Bi/Vi) cable between the electronic unit
and the display.
• Put back the rider saddle, see 7.1.1 (REMOVING THE
RIDER SADDLE).
• Raise the protection element (1).
• Connect the two one-way TEST connectors (2).
• Turn the ignition switch to position "0".
• Start the engine or attempt to start it.
The message "DIAG" comes up on the left display along
with a number corresponding to the reference code relat-
ing to the fault (see table); the fault detected may be
caused by breaks in the cables and/or connections not
made properly.
Checking an electric system fault:
Before commencing the automatic search for a fault,
stop the engine.
NOTE
When a fault comes up on the display, it is pos-
sible that the fault may also be attributable to the engine
control unit.
TheECU may only be tested by connecting a new ECU.
Should the engine control unit work properly, remember
to refit the previous unit.
The ECU features an anti-breakdown device which,
where necessary, means the engine can be started and
run despite there being a fault on the display.
Follow.~
SL mille
a, a' a, a,
00'00
DIAG
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1
0 - 00 Release 00/2001-05