
66
FI
FUEL INJECTION SYSTEM
Fault code No.
42
Symptom
No normal signals are received from the speed sensor.
Diagnostic code No. d:07 (speed sensor)
Order
Item/components and probable cause
Check or maintenance job
Reinstatement
method
1
Connections
• Speed sensor coupler
• Wire harness ECU coupler
Check the couplers for any pins that may have
pulled out.
Check the locking condition of the couplers.
If there is a malfunction, repair it and connect the
coupler securely.
Starting the
engine, and
inputting the
snowmobile
speed signals
by operating the
snowmobile at a
low speed of 20
to 30 km/h.
2
Open or short circuit in wire harness.
Repair or replace if there is an open or short cir-
cuit.
Between the speed sensor coupler and ECU cou-
pler.
Blue – Blue
White – White
Black/Blue – Black/Blue
3
Defective speed sensor.
Execute the diagnostic mode (code No. d:07).
Replace if defective.
Refer to “SIGNAL SYSTEM” in CHAPTER 8.
4
Gear for detecting snowmobile speed
has broken.
Replace if defective.
Refer to “FRONT AXLE AND TRACK” in CHAP-
TER 4.
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