Yamaha MBK XMAX 2014 Service Manual page 376

Fault code No.
Item
Diagnostic code No.
FI diagnostic tool display
Procedure
Probable cause of mal-
Item
function and check
1 Connection of speed sensor
coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
2 Connection of wire harness
ECU coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
3 Wire harness continuity.
4 Defective speed sensor.
5 Malfunction in ECU.
42 (For YP125R)
Speed sensor: no normal signals are received from the speed
sensor.
D07
Front wheel speed pulse
0–999
Check that the number increases when the front wheel is rotated.
The number is cumulative and does not reset each time the wheel
is stopped.
Maintenance job
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Open or short circuit → Re-
place the wire harness.
Between speed sensor cou-
pler and ECU coupler.
white–white
blue–blue
black/blue–black/blue
Check the installed condi-
tion of the speed sensor and
for damage.
Execute the diagnostic mode
(Code No. D07).
Front wheel stop: The pulse
integrated value should be
constant.
Rotate the front wheel a few
turns by hand and enter the
speed pulse: The pulse inte-
grated value will be added.
Replace if defective.
Replace the ECU.
8-63
FUEL INJECTION SYSTEM
Confirmation of service
completion
Turn the main switch to "ON"
and then rotate the front
wheel a few turns by hand.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 2.
Turn the main switch to "ON"
and then rotate the front
wheel a few turns by hand.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 3.
Turn the main switch to "ON"
and then rotate the front
wheel a few turns by hand.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 4.
Turn the main switch to "ON"
and then rotate the front
wheel a few turns by hand.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 5.