Speed Sensor; Ignition Switch - KYMCO MXU 450i Service Manual

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Speed Sensor
1.
Set
the meter
selector
to the
DC
Voltage
position
.
2.
With
appropriate needle
adapters
on the
meter
leads,
connect
the
red
tester lead
to
the
vo
ltage lead
(V);
then
connect
the black tester lead
to
the
ground
lead
(G).
3.
Tum
the ignition
switch
to t11e
ON
position
.
4. The
meter must show
12.0
volts.
5.
Leave
the
black tester
lead
connected;
then
con-
nect
the red
tester
lead to the
signal
lead pin
(S).
6. Slowly
move the
ATV forward
or
backward;
the
meter must
show 0
and
6 volts
alternately.
NOTE:
If
the sensor
tests
are within
specifica-
tions,
the speedometer must be replaced (see Sec-
tion
9).
To
replace
a speed
sensor,
use the
fo
ll
owing
procedure.
1.
Disconnect t11e three-wire
connector
fi·om the
speed
sensor;
then remove the
cap screw securing the
sensor to
the
sensor housing.
2. Remove
the
sensor from
the
sensor
housing
accounting
for an
0-ring.
5-6
3.
Install
tl1e
new speed sensor
into the housing
with
new
0 -ring
lightly coated
with
multi-purpose
grease;
then
secure t11e sensor with the
c.ap
screw
(threads coated
with
blue
Loctite
#
24~~).
Tighten
securely.
C01)71
Ignition Switch
The
ignitio
n
switch hamess
connects to
the switch
witll
a three-pin
connector.
To access the
connector,
remove the
access panel
in
front of
tlle
handlebar.
VOLTAG
E
•NOTE:
Perform
this
test
on the main
harness
connector.
1.
Set
the meter
selector
to the
DC Voltage
position
.
.
then
connect
t11e
black
meter lead
to ground.
3.
Meter must
show
battery
voltage.
• NOTE:
If the meter
shows
no battery
voltaue,
troubleshoot
the battery or the main
wiring har-
n
ess.

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