Yamaha MBK XMAX 2014 Service Manual page 365

Fault code No.
Item
Probable cause of mal-
Item
function and check
1 Condition of intake air pres-
sure sensor hose.
Check the intake air pressure
sensor hose condition.
2 Defective intake air pressure
sensor.
Fault code No.
Item
Fail-safe system
Diagnostic code No.
FI diagnostic tool display
Procedure
14
Intake air pressure sensor: hose system malfunction (clogged
or detached hose).
Maintenance job
Clogged or detached hose
→ Repair or replace the sen-
sor hose.
Execute the diagnostic
mode. (Code No. D03)
When engine is stopped:
Atmospheric pressure at the
current altitude and weather
conditions is indicated.
At sea level: Approx. 101 kPa
(757.6 mmHg, 29.8 inHg)
1000 m (3300 ft) above sea
level: Approx. 90 kPa (675.1
mmHg, 26.6 inHg)
2000 m (6700 ft) above sea
level: Approx. 80 kPa (600.0
mmHg, 23.6 inHg)
3000 m (9800 ft) above sea
level: Approx. 70 kPa (525.0
mmHg, 20.7 inHg)
When engine is cranking:
Make sure that the indication
value changes.
The value does not change
when engine is cranking. →
Check the intake air pressure
sensor.
Replace if defective.
Refer to "CHECKING THE
INTAKE AIR PRESSURE
SENSOR" on page 8-148.
15
Throttle position sensor: open or short circuit detected.
Able to start engine
Able to drive vehicle
D01
Throttle position sensor signal
• 8–22 (fully closed position)
• 88–102 (fully open position)
• Check with throttle valve fully closed.
• Check with throttle valve fully open.
8-48
FUEL INJECTION SYSTEM
Confirmation of service
completion
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 dis-
played → Go to item 2.