Yamaha MBK XMAX 2014 Service Manual page 362

Fault code No.
Item
Probable cause of mal-
Item
function and check
1 Connection of throttle posi-
tion 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 Installed condition of throttle
position sensor.
Check for looseness or
pinching.
5 Throttle position sensor volt-
age.
15
Throttle position sensor: open or short circuit detected.
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 throttle position
sensor coupler and ECU
coupler.
black/blue–black/blue
yellow–yellow
blue–blue
Improperly installed sensor
→ Reinstall.
Refer to "THROTTLE BODY"
on page 7-4.
Measure the throttle position
sensor voltage.
blue–black/blue
yellow–black/blue
Refer to "CHECKING THE
THROTTLE POSITION
SENSOR" on page 8-147.
8-49
FUEL INJECTION SYSTEM
Confirmation of service
completion
Turn the main switch to "ON".
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".
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".
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".
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 5.
Turn the main switch to "ON".
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 6.