Yamaha MBK X-MAX 300 2017 Service Manual page 455

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
Diagnostic
code No.
51 Radiator fan motor relay
52 Headlight
54 ISC (Idle Speed Control) unit Actuates and fully closes the
Item
Actuates the radiator fan mo-
tor relay five times at five-
second intervals.
The "check" indicator on the
Yamaha diagnostic tool
screen comes on each time
the relay is actuated.
Actuates the headlight five
times at five-second inter-
vals.
The "check" indicator on the
Yamaha diagnostic tool
screen come on each time
the relay is actuated.
ISC valve, then opens it to
the standby opening position.
This operation takes approxi-
mately 3 seconds until it is
completed.
The "check" indicator on the
Yamaha diagnostic tool
screen come on.
9-10
Actuation
Check that the radiator fan
motor relay is actuated five
times by listening for the op-
erating sound.
Check that the headlight is
on five times.
The ISC unit vibrates when
the ISC valve operates.
Procedure