Yamaha YZF-R15 Service Manual page 307

Fault code No. 42
Diagnostic code No.
Order Item/components and probable
cause
Installed state of speed sensor.
1
Connections
2
• Speed sensor coupler
• Main wire harness ECU coupler
3
Open or short circuit in lead.
4
Defective speed sensor.
Symptom No normal signals are received from the speed sensor.
07 Speed sensor
Check or maintenance job
• Check the couplers for any pins
•
•
•
•
•
•
8-50
FUEL INJECTION SYSTEM
Check for looseness or pinching.
that may be pulled out.
Check the locking condition of
the couplers.
If there is a malfunction, repair it
and connect the coupler
securely.
Repair or replace if there is an
open or short circuit.
Between speed sensor coupler
and ECU coupler.
Execute the diagnostic mode.
(Code No. 07)
Replace if defective.
Refer to "CHECKING THE
SPEED SENSOR" on page 8-74
Reinstatement
method
Starting the
engine, and
activating the
speed sensor
by operating the
vehicle.