Self-Diagnostic Function Table (For Fuel Injection System) - Yamaha MT-09 2021 Service Manual

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 9-16.
DTC Item
30_EVEN Overturn detected.
T
70_EVEN Engine forcibly
T stops when the ve-
hicle is left idling for
a long period.
C0520 ECU: no normal sig-
nals or malfunction
signals are received
from the IMU.
P0030 O sensor heater:
2
defective heater
controller 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
coupler or ECU
coupler.
• Open or short cir-
cuit in wire har-
ness between IMU
and ECU.
• Improperly in-
stalled IMU.
• Malfunction in
IMU.
• Malfunction in
ECU.
• Open circuit in wire
harness.
• Disconnected cou-
pler.
• Defective O sen-
2
sor heater control-
ler (Malfunction in
ECU).
• Broken or discon-
nected lead in O
2
sensor heater.
9-53
Vehicle symptom
—
—
Engine cannot be
started (depending
on the circumstanc-
es).
(When the O sen-
2
sor does not oper-
ate because the
exhaust tempera-
ture is low)
Increased exhaust
emissions.
Fuel learning cannot
be carried out.
Fail-safe system
operation
—
—
Engine cannot be
started (depending
on the circumstanc-
es).
Display only (If the
O sensor does not
2
operate, O feed-
2
back is not carried
out.)
Cruise control sys-
tem cannot be oper-
ated. (for
MTN890D)