Yamaha Wolverine YX70EPNG Service Manual page 497

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
Diagnostic
code No.
50 Fuel injection system relay
51 Radiator fan motor relay
54 ISC valve
Item
Actuates the fuel injection
system relay five times at
one-second intervals.
The "CHECK" indicator and
"
nostic tool screen come on
each time the relay is actuat-
ed.
(When the relay is on, the
"CHECK" indicator and "
on the Yamaha diagnostic
tool screen go off. When the
relay is off, the "CHECK" in-
dicator and "
Yamaha diagnostic tool
screen come on.)
Actuates the radiator fan mo-
tor relay five times at five-
second intervals. (2 seconds
on, 3 seconds off)
The "CHECK" indicator and
"
nostic tool screen come on
each time the relay is actuat-
ed.
(When the relay is on, the
"CHECK" indicator and "
on the Yamaha diagnostic
tool screen go off. When the
relay is off, the "CHECK" in-
dicator and "
Yamaha diagnostic tool
screen come on.)
Fully closes the ISC valve,
and then opens the valve.
This operation takes approxi-
mately 3 seconds.
The "CHECK" indicator and
"
nostic tool screen come on
during the operation.
10-10
Actuation
" on the Yamaha diag-
" on the
" on the Yamaha diag-
" on the
" on the Yamaha diag-
Procedure
Check that the fuel injection
system relay unit is actuated
five times by listening for the
operating sound.
"
Check that the radiator fan
motor relay is actuated five
times by listening for the op-
erating sound.
"
The operating sound can be
heard when ISC valve oper-
ates.