Yamaha MBK X-MAX 300 2017, Руководство по обслуживанию

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FUEL INJECTION SYSTEM
8-50
3-8 [For P0122, P0123] Short circuit
Between throttle position sensor output terminal (yellow) “a” of ECU coupler and any other ECU cou-
pler terminal “b”
If there is continuity, replace the wire harness.
4 Installed condition of throttle
body sensor assembly. Check for looseness or pinch-
ing.
Improperly installed sensor
→
Reinstall the throttle body.
Refer to “THROTTLE BODY” on
page 7-13.
Turn the main switch to “ON”,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic tool.
Condition is “Recover”
→
Go to
item 7 and finish the service.
Condition is “Malfunction”
→
Go
to item 5.
5 Defective throttle position sen-
sor. Check throttle position sensor
signal.
Execute the diagnostic mode.
(Code No. 01)
When the throttle valves are ful-
ly closed:
A value of 13–21 is indicated.
When throttle valves are fully
open:
A value of 97–107 is indicated.
An indicated value is out of the
specified range.
→
Replace the
throttle body.
Refer to “REPLACING THE
THROTTLE BODY” on page
7-18.
Turn the main switch to “ON”,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic tool.
Condition is “Recover”
→
Go to
item 7 and finish the service.
Condition is “Malfunction”
→
Go
to item 6.
6 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (Engine Control Unit)” on
page 8-128. Service is finished.
7 Delete the fault code and check
that the engine trouble warning
light goes off. Confirm that the fault code has
a condition of “Recover” using
the Yamaha diagnostic tool, and
then delete the fault code.
Fault code No. P0122, P0123
Item
No normal signals are received from the throttle position sensor.
[P0122] Throttle position sensor: open or ground short circuit de-
tected.
[P0123] Throttle position sensor: open or power short circuit detect-
ed.
B / L Y / B B / W G / Y P O / B R / W W Br / R B / L L L
W / Y Sb Gy B / L Y Y / G L / R G / R L / Y
W / R B W / B O L / B Br / W Gy / R R / B B / L P / W Y / L B / W
b
a