Yamaha MBK X-MAX 300 2017 Service Manual page 363

Fault code No.
Item
2 Connection of ABS ECU cou-
pler.
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 Connection of 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).
4 Front wheel sensor lead conti-
nuity, or defective front wheel
sensor.
5 Malfunction in ECU.
6 Malfunction in ABS ECU.
7 Delete the fault code and check
that the engine trouble warning
light goes off.
P0500
Front wheel sensor: no normal signals are received from the front
wheel sensor.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Open or short circuit, or defec-
tive sensor → Replace the front
wheel sensor.
Between front wheel sensor
coupler and ABS ECU coupler.
green–green
blue–blue
Between ABS ECU coupler and
ECU coupler.
white–white
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-128.
Replace the ABS ECU.
Refer to "ABS (ANTI-LOCK
BRAKE SYSTEM)" on page
4-63.
Turn the main switch to "ON",
and then rotate the front wheel
by hand.
Confirm that the fault code has
a condition of "Recover" using
the malfunction mode of the
Yamaha diagnostic tool, and
then delete the fault code.
8-58
FUEL INJECTION SYSTEM
Execute the diagnostic mode.
(Code No. 07)
Rotate the front wheel by hand
and check that the indicated val-
ue increases.
Value increases → Go to item 7.
Value does not increase → Go
to item 3.
Execute the diagnostic mode.
(Code No. 07)
Rotate the front wheel by hand
and check that the indicated val-
ue increases.
Value increases → Go to item 7.
Value does not increase → Go
to item 4.
Execute the diagnostic mode.
(Code No. 07)
Rotate the front wheel by hand
and check that the indicated val-
ue increases.
Value increases → Go to item 7.
Value does not increase → Go
to item 5.
Execute the diagnostic mode.
(Code No. 07)
Rotate the front wheel by hand
and check that the indicated val-
ue increases.
Value increases → Go to item 7.
Value does not increase → Go
to item 6.
Go to item 7.