Yamaha YZF-R1 Series Service Manual page 541

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
DTC Item
P0351 [P0351] Cylinder-#1
P0352 ignition coil: open or
P0353 short circuit detected
P0354 in the primary lead of
the cylinder-#1 igni-
tion coil.
[P0352] Cylinder-#2
ignition coil: open or
short circuit detected
in the primary lead of
the cylinder-#2 igni-
tion coil.
[P0353] Cylinder-#3
ignition coil: open or
short circuit detected
in the primary lead of
the cylinder-#3 igni-
tion coil.
[P0354] Cylinder-#4
ignition coil: open or
short circuit detected
in the primary lead of
the cylinder-#4 igni-
tion coil.
P0475 EXUP servo motor:
performance deterio-
ration
P0476 EXUP servo motor:
stuck EXUP servo
motor is detected.
Probable cause of
malfunction
• Defective coupler Engine stops.
between ignition coil Loss of engine power.
and ECU. Engine is difficult to
• Open or short cir- start.
Engine cannot be
cuit in wire harness
between ignition coil started.
and ECU. Engine idling speed is
• Improperly installed unstable.
ignition coil. Increased exhaust
• Defective ignition emissions.
coil.
• Malfunction in ECU.
• Defective coupler Loss of engine power. Learning values for
between EXUP ser-
vo motor and ECU.
• Open or short cir-
cuit in wire harness
between EXUP ser-
vo motor and ECU.
• Improperly installed
EXUP servo motor
and cables.
• Defective EXUP ser-
vo motor.
• Stuck EXUP servo
motor (mechanism
or motor).
• Malfunction in ECU.
• Defective coupler Loss of engine power. Learning values for
between EXUP ser-
vo motor and ECU.
• Open or short cir-
cuit in wire harness
between EXUP ser-
vo motor and ECU.
• Improperly installed
EXUP servo motor
and cables.
• Defective EXUP ser-
vo motor.
• Stuck EXUP servo
motor (mechanism
or motor).
• Malfunction in ECU.
9-44
Fail-safe system op-
Vehicle symptom
Injection to the appli-
cable cylinder group
(cylinders #1 and #4
or cylinders #2 and
#3) is cut off.
Air induction system
solenoid is turned on
all the time (air induc-
tion system air cut
off).
O
2
carried out.
ISC feedback is not
carried out.
ISC learning is not
carried out.
QSS is not carried
out.
fully closed EXUP are
fixed.
Learning values for
fully open EXUP are
fixed.
O
2
carried out.
fully closed EXUP are
fixed.
Learning values for
fully open EXUP are
fixed.
O
2
carried out.
eration
feedback is not
feedback is not
feedback is not