Yamaha MBK X-MAX 300 2017 Service Manual page 451

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
Fault code
Item
No.
P0560 Charging voltage is
abnormal.
P0601 Faulty ECU memory.
(ROM data error)
P062F EEPROM writing error • ISC learning value is
P0657 Fuel system voltage
(incorrect voltage sup-
plied to the fuel injec-
tor and fuel pump)
P1601 Sidestand switch
(open or short circuit
detected)
(no normal signals are
received from the
sidestand switch)
Probable cause of
malfunction
• Battery overcharg-
ing (defective rectifi-
er/regulator).
• Battery overcharg-
ing (broken or dis-
connected rectifier/
regulator lead).
• Battery over-dis-
charging (broken or
disconnected lead in
charging system).
• Battery over-dis-
charging (defective
rectifier/regulator).
• Malfunction in ECU.
not properly written.
• O feedback learn-
2
ing value is not
properly written.
• CO adjustment val-
ue is not properly
written.
• OBD memory value
is not properly writ-
ten.
• Malfunction in ECU.
• Tire diameter learn-
ing values are not
properly written.
• Open or short cir-
cuit in wire harness
between main
switch and ECU.
• Open circuit in wire
harness between
battery and ECU.
• Malfunction in ECU.
• Defective coupler
between sidestand
switch and ECU.
• Open or short cir-
cuit in wire harness
between sidestand
switch and ECU.
• Defective sidestand
switch.
• Malfunction in ECU.
9-6
Vehicle symptom
Engine is difficult to
start.
Increased exhaust
emissions.
Battery performance
has deteriorated or
battery is defective.
Engine cannot be
started.
Increased exhaust
emissions.
Engine cannot be
started or is difficult to
start.
Engine idling speed is
unstable.
OBD memory value is
not correct.
Traction control sys-
tem does not operate
properly.
Engine is difficult to
start.
Increased exhaust
emissions.
Engine cannot be
started.
Fail-safe system op-
eration
O feedback is not
2
carried out.
ISC learning is not
carried out.
Engine cannot be
started.
Ignition and injection
are not carried out.
Judgment for other
fault codes is not car-
ried out.
Writing to EEPROM is
not carried out.
ISC learning values =
Default values
O feedback learning
2
value is initialized.
CO adjustment value
is initialized.
OBD memory value is
initialized.
Tire diameter learn-
ing values = Default
values
Monitor voltage = 12
[V]
O feedback is not
2
carried out.
Engine is forcefully
stopped.