Yamaha Tracer MT09TRAH 2017 Service Manual page 553

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
Fault
Item
code No.
P0117 [P0117] Coolant tem-
P0118 perature sensor
(ground short circuit
detected)
[P0118] Coolant tem-
perature sensor (open
or power short circuit
detected)
P0122 [P0122] Throttle posi-
P0123 tion sensor (ground
P0222 short circuit detected)
P0223 [P0123] Throttle posi-
P2135 tion sensor (open or
power short circuit
detected)
[P0222] Throttle posi-
tion sensor (ground
short circuit detected)
[P0223] Throttle posi-
tion sensor (open or
power short circuit
detected)
[P2135] Throttle posi-
tion sensor (output
voltage deviation
error)
Probable cause of
malfunction
[P0117] Low voltage
of the coolant temper-
ature sensor circuit
(0.1 V or less)
[P0118] High voltage
of the coolant temper-
ature sensor circuit
(4.9 V or more)
• Defective coupler
between coolant
temperature sensor
and ECU.
• Open or short cir-
cuit in wire harness
between coolant
temperature sensor
and ECU.
• Improperly installed
coolant temperature
sensor.
• Defective coolant
temperature sensor.
• Malfunction in ECU.
[P0122, P0222] Low
voltage of the throttle
position sensor circuit
(0.25 V or less)
[P0123, P0223] High
voltage of the throttle
position sensor circuit
(4.75 V or more)
[P2135] Difference in
output voltage 1 and
output voltage 2 of the
throttle position sen-
sor
• Defective coupler
between throttle
position sensor and
ECU.
• Open or short cir-
cuit in wire harness
between throttle
position sensor and
ECU.
• Improperly installed
throttle position sen-
sor.
• Defective throttle
position sensor.
• Malfunction in ECU.
9-6
Vehicle symptom
Engine is difficult to
start.
Increased exhaust
emissions.
Engine idling speed is
unstable.
Engine idling speed is
high.
Engine idling speed is
unstable.
Engine response is
poor.
Loss of engine power.
Deceleration is poor.
Increased exhaust
emissions.
Vehicle cannot be
driven.
Fail-safe system
operation
The radiator fan motor
relay is on only when
the vehicle is traveling
at low speeds.
O feedback is not
2
carried out.
ISC feedback is not
carried out.
ISC learning is not
carried out.
The coolant tempera-
ture is fixed to 60 [C].
Change in the throttle
opening is 0 (transient
control is not carried
out).
D–j is fixed.
Throttle opening is
fixed to 125[].
Estimated atmo-
spheric pressure is
fixed to 101.3 [kPa].
O feedback is not
2
carried out.
Fuel is not cut off due
to the throttle open-
ing.
Output is restricted.
Air induction system
solenoid is turned on
all the time (air induc-
tion system air cut off).
ISC feedback is not
carried out.
ISC learning is not
carried out.