Yamaha MT-01 Service Manual page 358

Manuals by Motomatrix / www.motomatrix.co.uk
Fault code No. 15
Diagnostic code No.
Order Item/components and probable
cause
1 Installed condition of throttle position
sensor.
2 Connections
• Throttle position sensor coupler
• Main wire harness ECU coupler
• Sub-wire harness 2 coupler
3 Open or short circuit in wire harness
and/or sub lead.
4 Throttle position sensor lead wire
open circuit output voltage check.
5 Defective throttle position sensor.
Email: info@motomatrix.co.uk
Symptom Throttle position sensor: open or short circuit detected.
01 Throttle position sensor
FUEL INJECTION SYSTEM
Check or maintenance job
• Check for looseness or
pinching.
• Check that the sensor is
installed in the specified
position.
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler
securely.
• Repair or replace if there is an
open or short circuit.
• Between throttle position
sensor coupler and ECU
coupler
(blue–blue)
(yellow–yellow)
(back–black)
• Check for open circuit and
replace the throttle position
sensor.
(black–yellow)
Open circuit Output voltage
item
Ground wire 5 V
open circuit
Output wire 0 V
open circuit
Power supply 0 V
wire open
circuit
• Execute the diagnostic mode.
(Code No.01)
• Replace if defective.
Refer to "CHECKING THE
THROTTLE POSITION
SENSOR" on page 7-104.
7-43
Reinstatement
method
Turning the
main switch to
"ON".