Yamaha FJR1300AS(X), Service Manual

Page: 571 / 754

FUEL INJECTION SYSTEM
8-94
B-1 Connections
• Gear position switch coupler
(FJR1300A)
• Neutral switch coupler (FJR1300AS)
• Wire harness ECU coupler
• Relay unit coupler
• 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 se-
curely.
Starting the en-
gine, and input-
ting the vehicle
speed signals
by operating
the vehicle at a
20 to 30 km/h.
B-2 Open or short circuit in wire harness. • Repair or replace if there is an
open or short circuit.
• Between gear position switch
coupler and relay unit coupler.
(sky blue–sky blue) (FJR1300A)
• Between neutral switch coupler
and relay unit coupler.
(sky blue–sky blue)
(FJR1300AS)
• Between relay unit coupler and
ECU coupler.
(black/red–black/red)
• Between neutral switch coupler
and ECU coupler.
(sky blue–sky blue)
(FJR1300AS)
B-3 Faulty shift drum (neutral detection ar-
ea) • Replace if defective.
Refer to “TRANSMISSION” on
page 5-120.
B-4 Defective gear position switch (neutral
circuit) (FJR1300A)
Defective neutral switch (FJR1300AS) • Execute the diagnostic mode.
(Code No.d:21)
• Replace if defective.
Refer to “CHECKING THE
SWITCHES” on page 8-233.
Fault code No. 42 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. (FJR1300A)
Open or short circuit is detected in the neutral switch.
(FJR1300AS)
Diagnostic code No. A d:07 Rear wheel sensor
B d:21 Gear position switch (neutral circuit) (FJR1300A)
Neutral switch (FJR1300AS)
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method