Yamaha FZ 25 2021 Supplementary Service Manual page 174

Fault code No.
Symptoms
Diagnostic code No.
NOTICE
Do not remove the sensor module.
Item and components and
Item
probable cause
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).
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).
3 Harness continuity
4 Installed condition of sensor.
SELF-DIAGNOSTIC FUNCTION AND
DIAGNOSTIC CODE TABLE
P0122/P0123
Open or short circuit in the throttle position sensor detected.
P0112 (ground fault) P0123 (sky fault)
D01 (Throttle position sensor)
Defective connections  Re-
connect or replace the harness.
Defective connections  Re-
connect or replace the harness.
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)
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".
6-44
Actions
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.
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.
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.
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.
ELEC
Confirmation procedure after
actions
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