Yamaha GRIZZLY 700 FI YFM7FGPW, Service Manual

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FI
FUEL INJECTION SYSTEM
Fault code No. 42 Symptom No normal signals are received from the speed sensor.
Diagnostic code No. D07 Speed sensor
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Connections
• Speed sensor 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.
2 Open or short circuit in speed sen-
sor lead. • Repair or replace if there is an
open or short circuit.
• Between speed sensor coupler
and ECU coupler.
(blue–blue)
(white–white)
(black/blue–black/blue)
3 Gear for detecting vehicle speed
has broken. • Replace if defective.
Refer to “TRANSMISSION” in
chapter 4.
4 Defective speed sensor. • Execute the diagnostic mode.
(Code No.D07)
• Replace if defective.
Refer to “SIGNALING SYSTEM”
in chapter 9.