Yamaha V Star 950 Service Manual page 342

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Order
42
A. Normal signals are not received from the speed sensor.
B. Open or short circuit of neutral switch lead
Engine startup: Possible
Riding: Possible
07 (Speed sensor)
21
Vehicle speed pulses: 0–999
Make sure that the indication value increases when the rotation
speed of the rear wheel increases. This value is cumulative and is
not reset each time the wheel is prevented from rotating.
Checkpoints
Locate the malfunction.
7-57
FUEL INJECTION SYSTEM
Inspection method
Check in the diagnostic mode
(Code No. 07). Rotate the rear
wheel and make sure that the indi-
cation value increases. Malfunction
→ Go to the "Speed sensor system
malfunction" section below.
Check in the diagnostic mode
(Code No. 21).
When the gear is in neutral position:
ON indication
When the gear is not in neutral posi-
tion: OFF indication
Malfunction → Go to the "Neutral
switch system malfunction" section
below.