Yamaha 2012 TMAX XP500A Service Manual page 413

Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
5 Crankshaft position sensor
malfunction
6 ECU malfunction
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
1 Connection of intake air pres-
sure sensor coupler
Check the connection of the
coupler is secure.
Disconnect the coupler, and
check each pin (for bending,
wear, or locking).
2 Connection of wire harness
ECU coupler
Check the connection of the
coupler is secure.
Disconnect the coupler and
check each pin (for bending,
wear, or locking).
12
Crankshaft position sensor: no normal signals are received from the
crankshaft position sensor.
Unable to start engine
Unable to drive vehicle
—
—
—
Check or maintenance job
Sensor inspection procedure
Refer to "CHECKING THE
CRANKSHAFT POSITION
SENSOR" on page 8-135.
Replace if defective.
Replace the ECU.
13
Intake air pressure sensor: open or short circuit detected. (no nor-
mal signals are received from the intake air pressure sensor.)
Able to start engine
Able to drive vehicle
d:03
Displays the intake air pressure.
Set the engine stop switch to "
while pushing the start switch " ". (If the display value changes,
the performance is OK.)
Check or maintenance job
Poor connection → Connect it
securely, or repair/replace the
wire harness.
Poor connection → Connect it
securely, or repair/replace the
wire harness.
FUEL INJECTION SYSTEM
", and then operate the throttle
8-38
Sensor inspection proce-
dure
Crank the engine, and 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 check the
fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.