Yamaha Tracer MT09TRAH 2017, Service Manual

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SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
9-5
EAS20116
SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
EAS31794
SELF-DIAGNOSTIC FUNCTION TABLE (FOR FUEL INJECTION SYSTEM)
TIP
For details of the fault code, refer to “TROUBLESHOOTING METHOD” on page 8-33.
Fault
code No.
Item
Probable cause of
malfunction
Vehicle symptom
Fail-safe system
operation
P0030 O
2
sensor heater
(defective heater con-
troller detected)
• Open or short cir-
cuit in wire harness.
• Disconnected cou-
pler.
• Defective O
2
sensor
heater controller.
• Broken or discon-
nected lead in O
2
sensor heater.
(When the O
2
sensor
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 does not oper-
ate, O
2
feedback is
not carried out.)
P0107
P0108
[P0107] Intake air
pressure sensor 1
(ground short circuit
detected)
[P0108] Intake air
pressure sensor 1
(open or power short
circuit detected)
[P0107] Low voltage
of the intake air pres-
sure sensor 1 circuit
(0.5 V or less)
[P0108] High voltage
of the intake air pres-
sure sensor 1 circuit
(4.8 V or more)
•
Defective coupler
between intake air
pressure sensor 1
and ECU.
•
Open or short cir-
cuit in wire harness
between intake air
pressure sensor 1
and ECU.
•
Defective intake air
pressure sensor 1.
•
Malfunction in ECU.
Engine idling speed is
unstable.
Engine response is
poor.
Loss of engine power.
Increased exhaust
emissions.
Intake air pressure
difference is fixed to 0
[kPa].

–N is fixed.
Fuel is not cut off due
to the intake air pres-
sure difference.
Intake air pressure is
fixed to 101.3 [kPa].
O
2
feedback is not
carried out.
ISC feedback is not
carried out.
ISC learning is not
carried out.
P0112
P0113
[P0112] Intake air
temperature sensor
(ground short circuit
detected)
[P0113] Intake air
temperature sensor
(open or power short
circuit detected)
[P0112] Low voltage
of the intake air tem-
perature sensor circuit
(0.1 V or less)
[P0113] High voltage
of the intake air tem-
perature sensor circuit
(4.8 V or more)
•
Defective coupler
between intake air
temperature sensor
and ECU.
•
Open or short cir-
cuit in wire harness
between intake air
temperature sensor
and ECU.
•
Improperly installed
intake air tempera-
ture sensor.
•
Defective intake air
temperature sensor.
•
Malfunction in ECU.
Engine is difficult to
start.
Increased exhaust
emissions.
Engine idling speed is
unstable.
The intake air temper-
ature is fixed to 20
[

C].
O
2
feedback is not
carried out.
ISC feedback is not
carried out.
ISC learning is not
carried out.