Yamaha 2007 XP500 Service Manual page 363

Fault code No. 15
Diagnostic code No.
Order Item/components and probable cause
1 Installed condition of throttle position sen-
sor.
2 Connected state of connector
Throttle position sensor coupler
G
Main wire harness ECU (engine)
G
coupler
3 Open or short circuit in wire harness.
4 Throttle position sensor lead wire open cir-
cuit output voltage check.
5 Defective throttle position sensor.
Symptom Throttle position sensor-open or short circuit detected.
01 Throttle position sensor
FUEL INJECTION SYSTEM
Check or maintenance job
Check the installed area for
G
looseness or pinching.
Check that is installed in the
G
specified position.
Check the coupler for any pins
G
that may have pulled out.
Check the locking condition of
G
the coupler.
If there is a malfunction, repair it
G
and connect it securely.
Repair or replace if there is an
G
open or short circuit.
Between sensor coupler and
G
ECU (engine) coupler
(Black/Blue–Black/Blue)
(Yellow–Yellow)
(Blue–Blue)
Check for open circuit and
G
replace the throttle position sen-
sor.
(Black/Blue–Yellow)
Open circuit item Output voltage
Ground wire open 5 V
circuit
Output wire open 0 V
circuit
Power supply 0 V
wire open circuit
Execute the diagnostic monitor-
G
ing mode. (Code No.01)
Replace if defective.
G
Refer to "CHECKING
THROTTLE POSITION SENSOR"
on page 8-119.
8-48
Reinstatement
method
Turning the main
switch ON.
THE