Regulator/Rectifier; Neutral Start/Front Drive Actuator/Start-In-Gear/ 2Wd Relays; Headlights; Taillights - Brakelights - KYMCO MXU 450i Service Manual

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Regulator/Rectifier
1l1e
regulator/rect:iuer is located under the
front
rock
and
front fenders above the
oil
cooler.
TESTING
I.
Start engine
a11d
wann
up to
n.
o rmal operating
lempl:ralures;
IJ1on
connect a
multunetcr
to the
bat-
tery
as
follows.
2.
Select
the DC
Voltage
position;
then connect
d1c
red
tester lead to
the positive battery post and U1c
black
tester
lead
to the nogati,,o battery
post.
3.
Start the
engine
and slo"
I)
increase
RPM
.
1l1c
, oltage
should
increase with
the engine
RPM
to
a
maximtun of
I ·
.5
DC
volts.
•NOTE:
If
voltage rises above 15.5
DC
volts,
the
regulator Is faulty
or a
battery
connection
is loose
or
corroded.
Clean and tighten battery connec-
tions or
replace
the
regulator/rectifier.
If
voltage
does
not
rise,
check Voltage (Charging Coil
- No
Load)
in this
section.
If
charging coil voltage is
normal,
replace
the regulator/rectifier.
Neutral Start/
Front Drive Actuator/
Start-in-Gear/
2WD Relays
Thtl
relavs
are identical plug-in
type located on
tbe
power
rl"isrribution
module.
Relay
function
can
be
cht:cked b)'
S\\
itching rel:l)
positions.
The: rel<l)
s
arc
interchangeable.
•NOTE:
The
module
and wiring harness
are not
a
serviceable
component
and
must
be
replaced
as
an
assembly.
Headlights
VOLTAGE
•NOTE:
Perform this test on
the
main
harness side
of the
connectors.
Also,
the
ignition
switch must
be in the
LIGHTS
position.
I
Set the meter
selector
to
the
DC Voltage
position
2.
Couuect tbc bbck
tester
lead
to
the
black
wi.re:
tbeo COilJlcct
the red
tester
lead
to
the
wbitc
wire.
3.
With
the dimmer
switch in
the
LO
position.
tbc
meter must
show battery
voltage.
4_
Remove
the red
tester
lend
from the
white wire
and
connect
to
tllc
lavender
wiro.
5.
With
the din1mer switcb in
th~;
HI
position.
the
meter
must
sho\\
battery
voltage.
•NOTE:
If battery
voltage is
not
shown
in
any
test,
inspect the
fuses, battery,
main
wiring
harness.
connectors,
or the left
handlebar
switch.
Taillights - Brakelights
VOLTAGE (Taillights)
•NOTE:
Perform this
test
on the main harness side
of the
connector. Also,
the ignition
switch should
be
in
the
LIGHTS
position.
5-11

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