Yamaha YZFR6X(C) 2008 Service Manual page 387

Fault code No. 42
Diagnostic code No.
Item/components and probable
Order
cause
A-1 Installed state of speed sensor.
A-2 Connections
• Speed sensor coupler
• Main wire harness ECU coupler
A-3 Open or short circuit in lead.
A-4 Defective speed sensor.
A. No normal signals are received from the speed sensor.
Symptom
B. Open circuit is detected in the neutral switch.
A 07 Speed sensor
B 21 Neutral switch
Check or maintenance job
Check for looseness or pinching. Starting the
• Check the couplers for any pins
• Check the locking condition of
• If there is a malfunction, repair
• Repair or replace if there is an
• Between speed sensor cou-
• Execute the diagnostic mode.
• Replace if defective.
8-64
FUEL INJECTION SYSTEM
that may be pulled out.
the couplers.
it and connect the coupler
securely.
open or short circuit.
pler and ECU coupler.
(blue–blue)
(white/yellow–white/yellow)
(black/blue–black/blue)
(Code No. 07)
Refer to "CHECKING THE
SPEED SENSOR" on page 8-
96.
Reinstatement
method
engine, and
activating the
speed sensor
by operating the
vehicle.