Yamaha FJR13AG Service Manual page 750

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
EAS20162
SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE (ECU)
EAS31794
SELF-DIAGNOSTIC FUNCTION TABLE (FOR FUEL INJECTION SYSTEM)
TIP
For details of the fault code, refer to "TROUBLESHOOTING METHOD (ECU)" on page 8-61.
Fault code
Item
No.
C0520 ECU receives a signal
(FJR13ES from the IMU indicat-
G) ing that a malfunction
was detected or the
ECU does not re-
ceive normal signals
from the IMU.
P0030 O sensor heater (de-
2
fective heater control-
ler detected)
P0069 Intake air pressure
sensor or atmospher-
ic pressure sensor
(When the main
switch is turned to
"ON", the intake air
pressure sensor volt-
age and atmospheric
pressure sensor volt-
age differ greatly.)
Probable cause of
malfunction
• 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 circuit in wire (When the O
harness.
does not operate be-
• Disconnected cou-
cause the exhaust
pler.
temperature is low)
• Defective O sensor
Increased exhaust
2
driver (malfunction emissions.
in ECU). Fuel learning cannot
• Open circuit in O be carried out.
2
sensor heater lead.
• Malfunction in ECU. Engine is difficult to
• Intake air pressure start.
sensor hose is dis- Engine idling speed is
connected, clogged, unstable.
kinked, or pinched. Increased exhaust
• Defective intake air emissions.
pressure sensor or Loss of engine power.
atmospheric pres-
sure sensor.
9-5
Fail-safe system op-
Vehicle symptom
Engine cannot be
started (depending on
the circumstances).
Cruise control system
cannot be operated.
sensor If the O
2
not operate, O
back is not carried
out.
Cruise control system
cannot be operated.
Intake air pressure is
fixed to 101.3 [kPa].
Intake air pressure
difference is fixed to 0
[kPa].
Atmospheric pres-
sure is fixed to 101.3
[kPa].
α–N is fixed.
Fuel is not cut off due
to the intake air pres-
sure difference.
Atmospheric pres-
sure sensor output
correction value is
fixed to 0.
O
2
carried out.
ISC feedback is not
carried out.
ISC learning is not
carried out.
Cruise control system
cannot be operated.
(ECU)
eration
sensor does
2
feed-
2
feedback is not