6-44
–
+
ELEC
Fault code No.
P0122/P0123
Symptoms
Open or short circuit in the throttle position sensor detected.
P0112 (ground fault) P0123 (sky fault)
Diagnostic code No.
D01 (Throttle position sensor)
NOTICE
Do not remove the sensor module.
Item
Item and components and
probable cause
Actions
Confirmation procedure after
actions
1
Connection of throttle position
sensor coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
Defective connections
Re-
connect or replace the harness.
Turn the main switch to “ON”,
and then check the condition of
the fault code in diagnostic
mode of the Yamaha diagnostic
tool.
Condition is Recovered
Go to
item 7 and finish the service.
Condition is Detected
Go to
item 2.
2
Connection of main harness
ECU coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
Defective connections
Re-
connect or replace the harness.
Turn the main switch to “ON”,
and then check the condition of
the fault code in diagnostic
mode of the Yamaha diagnostic
tool.
Condition is Recovered
Go to
item 7 and finish the service.
Condition is Detected
Go to
item 3.
3
Harness continuity
Open or short circuit
Replace
the harness.
ECU - TPS (sensor output)
Note: In the case of P0122,
check the following:
ECU - TPS (sensor power sup-
ply)
Note: In the case of P0123,
check the following:
ECU - TPS (sensor ground)
Turn the main switch to “ON”,
and then check the condition of
the fault code in diagnostic
mode of the Yamaha diagnostic
tool.
Condition is Recovered
Go to
item 7 and finish the service.
Condition is Detected
Go to
item 4.
4
Installed condition of sensor.
Check the installation part for
looseness, stuck places, or diffi-
culties in installing.
Check if the mounting position
is OK.
Refer to “Throttle body, Fuel in-
jector”.
Turn the main switch to “ON”,
and then check the condition of
the fault code in diagnostic
mode of the Yamaha diagnostic
tool.
Condition is Recovered
Go to
item 7 and finish the service.
Condition is Detected
Go to
item 5.
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