Yamaha YZF-R1, Service Manual

Page: 535 / 808

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
9-38
EAS33028
SELF-DIAGNOSTIC FUNCTION TABLE (FOR FUEL INJECTION SYSTEM)
TIP
For details of the DTC, refer to “BASIC PROCESS FOR TROUBLESHOOTING” on page 9-13.
DTC Item
Probable cause of
malfunction
Vehicle symptom
Fail-safe system op-
eration
30_EVEN
T Latch up detected. • The vehicle has
overturned.
• Installed condition of
IMU.
• Defective IMU.
• Malfunction in ECU.
– –
70_EVEN
T Engine forcibly stops
when the vehicle is
left idling for a long
period. • Allow to idle for a
long period of time.
• Malfunction in ECU.
– –
C0520 Abnormal IMU • Defective IMU cou-
pler or ECU coupler.
• Open or short cir-
cuit in wire harness
between IMU and
ECU.
• Improperly installed
IMU.
• Malfunction in IMU.
• Malfunction in ECU.
Engine cannot be
started (depending on
the circumstances). Engine cannot be
started (depending on
the circumstances).
P0030 O
2
sensor 1 heater:
defective heater con-
troller detected.
• Open or short cir-
cuit in wire harness.
• Disconnected cou-
pler.
• Defective O
2
sensor
1 heater controller
(Malfunction in
ECU).
• Broken or discon-
nected lead in O
2
sensor 1 heater.
(When the O
2
sensor
1 does not operate
because the exhaust
temperature is low)
Increased exhaust
emissions.
Fuel learning cannot
be carried out.
Display only (If the O
2
sensor 1 does not op-
erate, O
2
feedback is
not carried out.)
P0050 O
2
sensor 2 heater:
defective heater con-
troller detected.
• Open or short cir-
cuit in wire harness.
• Disconnected cou-
pler.
• Defective O
2
sensor
2 heater controller
(Malfunction in
ECU).
• Broken or discon-
nected lead in O
2
sensor 2 heater.
(When the O
2
sensor
2 does not operate
because the exhaust
temperature is low)
Increased exhaust
emissions.
Fuel learning cannot
be carried out.
Display only (If the O
2
sensor 2 does not op-
erate, O
2
feedback is
not carried out.)