Yamaha 2009 XP500Y TMAX Service Manual page 342

Fault code No. 16
Diagnostic code No.
Order Item/components and probable
cause
1 Installed condition of throttle position
sensor.
2 Defective throttle position sensor.
Fault code No. 19
Diagnostic code No.
Order Item/components and probable
cause
1 Connection
• Wire harness ECU (engine control
unit) coupler
2 Open or short circuit in wire harness.
3 Defective sidestand switch.
Symptom Stuck throttle position sensor detected.
01 Throttle position sensor
Check or maintenance job
• Check for looseness or pinch-
• Check that the sensor is in-
• Execute the diagnostic mode.
• Replace if defective.
Symptom A break or disconnection of the blue/black lead of the
ECU (engine control unit) is detected.
20 Sidestand switch
Check or maintenance job
• Check the coupler for any pins
• Check the locking condition of
• If there is a malfunction, repair it
• Repair or replace if there is an
• Between ECU (engine control
• Execute the diagnostic mode.
• Replace if defective.
8-45
FUEL INJECTION SYSTEM
ing.
stalled in the specified position.
(Code No. 01)
Refer to "CHECKING THE
THROTTLE POSITION SEN-
SOR" on page 8-77.
that may have pulled out.
the coupler.
and connect the coupler se-
curely.
open or short circuit.
unit) and main switch.
(blue/black–blue/black)
(Code No. 20)
Refer to "CHECKING THE
SWITCHES" on page 8-61.
Reinstatement
method
Reinstated by
starting the en-
gine, operating
it at idle, and
then racing it.
Reinstatement
method
Reinstated by
retracting the
sidestand.
Reinstated by
reconnecting
the wiring.