Yamaha YZF-R1 Series Service Manual page 535

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