6 - 22
FI
Fault code No.
42
Symptom A. No normal signals are received from the speed sensor.
B. Open circuit is detected in the neutral switch.
Diagnostic code No. A
D07 Speed sensor
B
D21 Neutral switch
Order Item/components and probable
cause
Check or maintenance job
Reinstatement
method
B-1
Connections
• Neutral switch coupler
• Main wire harness ECU 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
securely.
Starting the
engine, and
activating the
vehicle speed
sensor by oper-
ating the vehi-
cle at 20 to 30
km/h.
B-2
Open circuit in neutral switch lead.
• Repair or replace if there is an
open circuit.
• Between neutral switch connec-
tor and relay unit coupler.
(sky blue–sky blue)
• Between relay unit coupler and
ECU coupler.
(light green–brown)
(black/yellow–sky blue)
B-3
Faulty shift drum (neutral detection
area).
• Replace if defective.
Refer to “TRANSMISSION” in
chapter 4.
B-4
Defective neutral switch.
• Execute the diagnostic mode.
(Code No.D21)
• Replace if defective.
Refer to “CHECKING THE
SWITCHES” in chapter 8.
Summary of Contents for YFM700RV 2009
Page 1: ...YFM700RV SERVICE MANUAL 1S3 28197 E0 ...
Page 34: ...2 11 SPEC ENGINE SPECIFICATIONS Cylinder head tightening sequence 1 3 2 4 5 7 8 6 ...
Page 52: ...2 29 SPEC OIL FLOW DIAGRAMS 1 Oil delivery pipe 2 Oil filter 3 Oil pump 2 3 A A A A 2 1 ...
Page 55: ...2 32 SPEC OIL FLOW DIAGRAMS 1 Balancer 1 2 Crankshaft 2 1 ...
Page 408: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...
