Yamaha MTN1000 2016 Service Manual page 637

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
Fault
Item
code No.
P0476 EXUP servo motor
(Stuck)
P048D EXUP position sensor
P048E [P048D] EXUP posi-
tion sensor (open or
ground short circuit
detected)
[P048E] EXUP posi-
tion sensor (power
short circuit detected)
P0500 [P0500, P1500] Rear
P1500 wheel sensor (no nor-
mal signals are
received from the rear
wheel sensor)
[P1500] Neutral
switch (open or short
circuit is detected)
[P1500] Clutch switch
(open or short circuit
is detected)
Probable cause of
malfunction
• Defective coupler
between EXUP
servo motor and
ECU.
• Open or short cir-
cuit in wire harness
between EXUP
servo motor and
ECU.
• Improperly installed
EXUP servo motor
and cables.
• Defective EXUP
servo motor.
• Stuck EXUP servo
motor (mechanism
or motor).
• Malfunction in ECU.
• Defective coupler
between EXUP
position sensor and
ECU.
• Open or short cir-
cuit in wire harness
between EXUP
position sensor and
ECU.
• Defective EXUP
position sensor.
• Malfunction in ECU.
• Open or short cir-
cuit in wire harness
between rear wheel
sensor and ABS
unit.
• Open or short cir-
cuit in wire harness
between ABS unit
and ECU.
• Open or short cir-
cuit in wire harness
between neutral
switch and ECU.
• Open or short cir-
cuit in wire harness
between clutch
switch and ECU.
• Defective rear wheel
sensor.
• Defective neutral
switch.
• Defective clutch
switch.
• Improper adjust-
ment of clutch lever.
• Malfunction in ECU.
9-10
Vehicle symptom
Loss of engine power. Learning values for
Loss of engine power. Learning values for
Vehicle speed is not
displayed on the
meter.
Engine stalls when
the vehicle is deceler-
ating to a stop.
Engine idling speed is
high.
Indication of the neu-
tral indicator light is
incorrect.
Engine cannot be
restarted when the
transmission is in
gear even with the
clutch lever squeezed.
Engine idling speed is
unstable.
Increased exhaust
emissions.
Traction control does
not work.
Fail-safe system
operation
fully closed EXUP are
fixed.
Learning values for
fully open EXUP are
fixed.
O feedback is not
2
carried out.
fully closed EXUP are
fixed.
Learning values for
fully open EXUP are
fixed.
O feedback is not
2
carried out.
Vehicle speed dis-
played on the meter =
0 [km/h]
O feedback is not
2
carried out.
Fuel cut-off control
when the rear wheel
sensor or neutral
switch malfunctions is
carried out.
ISC feedback is not
carried out.
ISC learning is not
carried out.
Traction control does
not work.
Cruise control system
cannot be operated.