Yamaha MBK XMAX 2014, Service Manual

Page: 369 / 482

FUEL INJECTION SYSTEM
8-56
6 Defective O
2
sensor. Check the O
2
sensor.
Replace if defective.
Refer to “ENGINE REMOV-
AL” on page 5-2.
Start the engine, warm it up,
and then race it, or execute
the diagnostic mode. (Code
No. D63)
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 7.
7 Malfunction in ECU. Replace the ECU.
Fault code No. 30
Item Latch up detected.
Fail-safe system
Unable to start engine
Unable to drive vehicle
Diagnostic code No. D08
FI diagnostic tool display
Lean angle sensor output voltage
• 0.4–1.4 (upright)
• 3.7–4.4 (overturned)
Procedure
Remove the lean angle sensor and incline it more than 65 de-
grees.
Item
Probable cause of mal-
function and check
Maintenance job
Confirmation of service
completion
1 The vehicle has overturned. Raise the vehicle upright. Turn the main switch to “ON”,
then to “OFF”, and then back
to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 2.
2 Installed condition of lean
angle sensor. Check the installed direction
and condition of the sensor. Turn the main switch to “ON”,
then to “OFF”, and then back
to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 3.
3 Defective lean angle sensor. Execute the diagnostic
mode. (Code No. D08)
Replace if defective.
Refer to “CHECKING THE
LEAN ANGLE SENSOR” on
page 8-144. Turn the main switch to “ON”,
then to “OFF”, and then back
to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 4.
4 Malfunction in ECU. Replace the ECU.
Fault code No. 24
Item
O
2
sensor: no normal signals are received from the O
2
sensor.