DESCRIPTION
The
ignition
circuit
consists
of
igni
tion
switch
Ie
ignition
unit
dis
tributor
winng
ipark
plugs
and
battery
The
distributor
is
of
the
contactless
type
and
is
equipped
with
a
pick
up
coil
which
electrically
detects
the
igni
tion
timing
signal
in
place
of
the
ircuit
I
rea
r
of
the
conventional
distributor
The
IC
ignition
unit
is
a
new
addition
which
generates
the
signal
required
for
the
make
and
break
of
the
primary
current
for
the
ignition
coil
The
primary
current
is
supplied
by
the
battery
or
alternator
and
flows
through
the
primary
circuit
It
consists
of
the
ignition
switch
primary
winding
of
the
ignition
coil
IC
ignition
unit
and
all
connecting
low
tension
wiring
The
secondary
current
is
produced
by
the
ignition
coil
and
flows
through
the
secondary
circuit
resulting
in
high
voltage
spark
between
the
electrodes
of
the
spark
plugs
in
engine
cylinders
This
circuit
contains
the
secondary
winding
of
the
ignition
coil
distribu
tor
high
tension
cables
to
coil
and
spark
plugs
distributor
rotor
and
cap
When
the
ignition
switch
is
turned
on
and
the
distributor
reluctor
rotates
the
primary
current
flows
through
the
primary
winding
of
the
coil
and
through
IC
ignitionu
nit
to
ground
When
the
primary
circuit
is
opened
by
circuit
of
IC
ignition
unit
the
magnetic
field
built
up
in
the
primary
winding
of
the
coil
moves
through
the
secondary
winding
of
the
coil
in
ducing
high
voltage
This
high
voltage
is
produced
every
time
the
primary
circuit
opens
EngineElect
ical
System
IGNITfON
CIRCUIT
The
secondary
current
flows
through
the
high
tension
cable
to
the
distributor
cap
then
the
rotor
distributes
the
current
to
one
of
the
spark
plug
terminals
in
the
distrubutor
cap
Then
the
spark
occurs
while
the
secondary
current
jumps
the
gap
be
tween
the
insulated
electrode
and
the
ground
side
electrode
of
the
spark
plug
This
process
is
repeated
for
each
power
stroke
of
t
e
engine
The
spark
plug
should
be
inspected
cleaned
and
regapped
at
tune
up
Spark
plugs
should
also
be
replaced
periodically
as
specified
in
the
Maintenance
Schedule
The
remainder
of
the
ignition
component
parti
should
be
inspected
Battery
letink
Primary
winding
1
Ignition
coil
Secondary
winding
J
for
only
their
operation
air
gap
of
distributor
tightness
of
electrical
terminals
and
wiring
condition
Apply
grease
NLGI
consistency
No
I
containing
MaS
or
equivalent
to
distributor
rotor
shaft
as
required
WARNING
When
current
is
flowing
never
touch
with
bare
hand
high
tension
cables
or
any
other
parts
with
high
vollage
If
parts
are
moist
touching
them
could
cause
an
electric
shock
even
if
they
are
insulated
Always
wear
dry
well
insulated
gloves
or
wrap
affected
parts
with
dry
cloth
before
handling
To
starter
EE
20
Ro
or
head
Ul
J
r
Spark
plugs
EE743
Fig
EE
56
Ignition
System
Circuit
Diagram