Yamaha 2008 Fazer FZ1-N Service Manual page 434

Fault code No. 42 Symptom
Diagnostic code No.
Item/components and probable
Order
Installed state of speed sensor.
A-1
Connections
• Speed sensor coupler
• Main wire harness ECU coupler
A-2
Open or short circuit in lead.
A-3
Defective speed sensor
A-4
A. No normal signals are received from the speed sensor.
B. Open circuit is detected in the neutral switch.
A 07 Speed sensor
B 21 Neutral switch
cause
FUEL INJECTION SYSTEM
Check or maintenance job
• Check for looseness or pinch-
ing.
• Check the couplers for any pins
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.
(Blue–Blue)
(White/Yellow–White/Yellow)
(Black/Blue–Black/Blue)
• Execute the diagnostic mode.
(Code No.07)
• Replace if defective.
Refer to "CHECKING THE
SPEED SENSOR" on page 8-
152.
8-65
Reinstate-
ment method
Starting the
engine, and
inputting the
vehicle speed
signals by
operating the
vehicle at a 20
to 30 km/h.