Yamaha 2012 TMAX XP500A Service Manual page 432

Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
4 Lean angle sensor malfunc-
tion
5 ECU malfunction
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
1 Connection of front wheel
sensor (meter) coupler
Check the connection of the
coupler is secure.
Disconnect the coupler, and
check each pin (for bending,
wear, or locking).
41
Lean angle sensor: open or short circuit detected. (no normal sig-
nals are received from the lean angle sensor.)
Unable to start engine
Unable to drive vehicle
d:08
Lean angle sensor output voltage
• 0.4–1.4 (upright)
• 3.7–4.4 (overturned)
Remove the lean angle sensor and incline it more than 45 degrees.
Check or maintenance job
Check in the diagnostic mode
(Code No. d:08).
Sensor inspection procedure
Refer to "CHECKING THE
LEAN ANGLE SENSOR" on
page 8-135.
In vertical position:
0.4–1.4 V
When turned over:
3.7–4.4 V
Indication is incorrect. →
Replace the lean angle sen-
sor.
Replace the ECU.
42
No normal signals are received from the front wheel sensor.
Able to start engine
Able to drive vehicle
d:07
Vehicle speed pulses: 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.
Check or maintenance job
Poor connection → Connect it
securely, or repair/replace the
wire harness.
FUEL INJECTION SYSTEM
8-57
Sensor inspection proce-
dure
Rotate the main switch to the
OFF position first, and then
rotate it to the ON position
again.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Sensor inspection proce-
dure
Place the main switch to the
"ON" position and then rotate
the front wheel a few turns
manually to enter the speed
pulse.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.