Yamaha FJR13AEV(C) Service Manual page 565

Fault code No. 42
Diagnostic code No.
Order Item/components and probable
cause
A-1 Connections
• Rear wheel sensor coupler
• Wire harness ECU coupler
• ABS ECU coupler
• ABS wire harness coupler
A-2 Open or short circuit in wire harness
and/or ABS wire harness.
A-3 Sensor rotor for detecting vehicle
speed has broken.
A-4 Defective rear wheel sensor
Symptom A. No normal signals are received from the rear wheel
sensor.
B. Open or short circuit is detected in the neutral circuit of
the gear position switch. (FJR13A)
Open or short circuit is detected in the neutral switch.
(FJR13AE)
A 07 Rear wheel sensor
B 21 Gear position switch (neutral circuit) (FJR13A)
Neutral switch (FJR13AE)
Check or maintenance job
• Check the coupler for any pins
• Check the locking condition of
• If there is a malfunction, repair it
• Repair or replace if there is an
• Between rear wheel sensor
• Between ABS ECU coupler and
• Replace the rear wheel.
• Execute the diagnostic mode.
• Replace if defective.
8-94
FUEL INJECTION SYSTEM
that may be pulled out.
the coupler.
and connect the coupler se-
curely.
open or short circuit.
coupler and ABS ECU coupler.
(white–white)
(black–black)
ECU coupler.
(white/yellow–white/yellow)
Refer to "REAR WHEEL" on
page 4-24.
(Code No.07)
Refer to "MAINTENANCE OF
THE REAR WHEEL SENSOR
AND SENSOR ROTOR" on
page 4-26.
Reinstatement
method
Starting the en-
gine, and input-
ting the vehicle
speed signals
by operating
the vehicle at a
20 to 30 km/h.