Yamaha MBK MW125 2014 Service Manual page 330

Fault code No.
Item
6 Malfunction in ECU.
TIP
If fault code numbers "13" and "14" are both indicated, take the actions specified for fault code number
"13" first.
Fault code No. 14
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
Procedure
Probable cause of malfunc-
Item
tion and check
1 Installed condition of intake air
pressure sensor.
13
Intake air pressure sensor: open or short circuit detected.
Replace the ECU.
Refer to "REPLACING THE
ECU (engine control unit)" on
page 8-59.
14
Intake air pressure sensor: system malfunction (clogged or de-
tached).
Able to start engine
Able to drive vehicle
03
Displays the intake air pressure.
Extend the sidestand, and then operate the throttle while pushing the
start switch. (If the display value changes, the performance is OK.)
Maintenance job
Clogged or detached → Repair
the sensor.
8-33
FUEL INJECTION SYSTEM
Confirmation of service com-
Start the engine and let it idle
for approximately 5 seconds.
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 2.
pletion