Suzuki AN400 Service Manual page 100

1A-37 Engine General Information and Diagnosis:
Step
1 1) Turn the ignition switch OFF.
2) Remove the left foot board and clutch outer cover. (Refer
to "V-belt Type Continuously Variable Automatic
Transmission Removal and Installation in Section 5A
(Page5A-3)".)
3) Check the speed sensor lead wire couplers (1) and (2)
for loose or poor contacts.
If OK, then measure the speed sensor input voltage.
1
4) Insert the needle pointed probes to the lead wire coupler.
5) Turn the ignition switch ON.
6) Measure the speed sensor input voltage at the couplers
(between positive terminal: O/R and negative terminal:
B/W wire).
Speed sensor input voltage
Battery voltage (Positive terminal: O/R – Negative
terminal: B/W)
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Voltage ( )
Is the voltage OK?
Action
2
I705H1110052-01
(A)
V
B/W
O/R
(B)
I705H1110110-02
Yes
• Remove the speed
sensor and Clean
away metal particles
or foreign material.
• If OK, go to Step 2.
No
• Loose or poor
contacts on the
speedometer
couplers.
• Open or short circuit
in the O/R wire or B/
W wire.