r
CHECKING
B
C
D
D
SOLENOID
VALVE
I
Turn
on
engine
key
Do
not
start
engine
2
Ensure
that
solenoid
valve
clicks
when
intermittently
electrified
as
shown
in
Figure
ET
37
Fig
ET
37
Checking
solenoid
uolV
l
I
l
EF264
2
Turn
ignition
key
to
ON
posi
tion
3
Ensure
that
tester
pointer
deflects
when
ignition
key
is
turned
on
4
If
tester
panter
does
not
deflect
when
solenoid
valve
and
speed
detect
ing
switch
circuits
are
functioning
properly
amplifier
is
faulty
Engine
Tune
up
3
If
a
click
is
heard
solenoid
valve
is
normal
4
If
a
click
is
not
heard
at
all
check
for
continuity
with
a
circuit
tester
If
discontinuity
is
detected
replace
sole
naid
valve
CHECKING
AMPLIFIER
Manual
transmission
models
The
amplifier
is
installed
at
the
rear
of
the
speedometer
To
check
proceed
as
follows
1
Set
circuit
tester
in
d
c
ampere
range
IA
min
full
scale
connect
test
probes
of
tester
as
shown
in
Figure
ET
38
Do
not
confuse
positive
line
with
negative
line
M
p
1
II
L
o
A
I
of
j
t
J
f
T
1
Ignition
key
2
Amplifier
3
Speed
detecting
switch
4
B
C
D
D
solenoid
valve
Fig
ET
38
Checking
amplifiu
REPLACING
AIR
PUMP
AIR
CLEANER
ELEMENT
Remove
air
hose
then
detach
air
cleaner
from
hoodledge
Air
cleaner
element
and
air
cleaner
lower
body
are
built
into
a
unit
construction
Replace
air
cleaner
element
and
lower
body
as
an
assembly
ET
20
EC323
Fig
ET
39
Repl4cing
air
cleaner
element
CHECKING
EXHAUST
GAS
RECIRCULATION
E
G
R
CONTROL
SYSTEM
Checkln
E
G
R
control
system
In
Ita
mounted
condition
I
M
ake
a
thorough
visual
check
of
E
G
R
control
system
If
necessary
wipe
away
oil
to
facilitate
inspection
If
hoses
are
cracked
or
broken
fe
place
2
With
engine
running
check
E
G
R
warning
system
for
proper
function
Make
sure
that
E
G
R
warn
ing
lamp
light
when
ignition
switch
is
turned
to
START
position
starter
mo
tor
runs
If
E
G
R
warning
lamp
does
not
light
inspect
harnesses
and
con
nectors
or
replace
warning
lamp
Then
turn
ignition
switch
to
ON
position
and
check
the
following
items
I
If
odometer
of
detector
drive
counter
has
not
reached
50
000
counts
make
sure
that
E
G
R
warning
lamp
does
not
light
2
If
odometer
of
detector
drive
counter
has
attained
50
000
counts
make
sure
that
E
G
R
warning
lamp
lights
If
warning
lamp
does
not
light
check
harnesses
connector
and
de
tector
drive
counter
replace
warning
lamp
or
detector
drive
counter
if
necessary
Note
Operation
of
E
G
R
warning
lamp
is
as
follows
3
If
there
is
a
leak
remove
top
cover
from
purge
contiol
valve
and
check
for
dislocated
or
cmcked
dia
phragm
If
necessary
replace
dia
phmgm
kit
which
is
made
up
of
a
retainer
diaphragm
and
spring
I
@
1
Cover
2
Diaphragm
3
Retainer
4
Diaphragm
spring
Fig
ET
47
ET350
Carbon
caniater
purge
control
valve
Carbon
unlster
filter
Check
for
a
contaminated
element
Element
can
be
removed
at
the
bottom
of
canister
installed
on
vehicle
body
Fig
ET
48
Replacing
carbon
canister
filter
Fuel
tank
vacuum
relief
valve
operation
Remove
fuel
filler
cap
and
see
it
functions
properly
I
Wipe
clean
valve
housing
and
have
it
in
your
mouth
2
Inhale
air
A
slight
resistance
ac
companied
by
valve
indicates
that
valve
is
in
good
mechanical
condition
Note
also
that
by
further
inhaling
air
the
resistance
should
be
disappeared
with
valve
clicks
Engine
Tune
up
3
If
valve
is
clogged
or
if
no
resist
ance
is
felt
replace
cap
as
an
assem
bled
unit
r
u
ET369
Fig
ET
49
Fuel
filler
cap
CHECKING
CATALYTIC
CONVERTER
INSPECTION
Preliminary
inspection
Visually
check
condition
of
all
component
parts
including
hoses
tubes
and
wires
replace
if
necessary
Refer
to
Inspection
of
A
I
S
on
page
EC
17
Catalytic
converter
Whether
catalytic
converter
is
nOf
mal
or
not
can
be
checked
by
ob
serving
variation
in
CO
percentage
The
checking
procedure
is
as
follows
Apply
parking
brake
Shift
gears
into
Neutral
for
manual
transmission
and
Neutral
or
Park
for
automatic
transmission
1
Visually
check
catalytic
converter
for
damage
or
cracks
2
Remove
air
hose
between
5
way
connector
and
air
check
valve
Plug
the
disconnected
hose
to
prevent
dust
from
entering
Refer
to
page
ET
12
3
Check
carburetor
pipes
for
proper
connection
4
Warm
up
engine
sufficiently
5
Race
engine
1
500
to
2
000
rpm
two
or
three
times
under
no
load
then
run
engine
for
one
minute
at
idling
speed
6
Adjust
throttle
adjusting
screw
until
engine
attains
to
specified
speed
Refer
to
page
ET
12
7
Check
ignition
timing
If
neces
sary
adjust
it
to
specifications
Refer
to
page
ET
10
ET
23
8
Adjust
idle
adjusting
screw
until
specified
CO
percentage
is
obtained
Refer
to
page
ET
12
9
Repeat
the
adjustment
process
as
described
in
steps
5
to
8
above
until
specified
CO
percentage
is
obtained
Note
Adjustment
in
step
9
should
be
made
ten
minutes
after
engine
has
warmed
up
10
Race
engine
1
500
to
2
000
rpm
two
or
three
times
under
no
load
and
make
sure
that
specified
CO
per
centage
is
obtained
I
1
Remove
cap
and
connect
air
hose
to
air
check
valve
If
idling
speed
increases
readjust
it
to
specified
speed
with
throttle
ad
justing
screw
12
Warm
up
engine
for
about
four
minutes
at
2
000
rpm
under
n
load
13
Measure
CO
percentage
at
idling
speed
After
step
12
has
been
com
pleted
wait
for
one
minute
before
making
CO
percentage
measurement
14
If
CO
percentage
measured
in
step
13
is
less
than
0
3
the
catalylic
converter
is
normal
15
If
CO
percentage
measured
in
step
13
is
over
0
3
recheck
A
I
S
and
replace
air
check
valve
Then
perform
inspection
steps
12
and
13
16
If
CO
percentage
is
still
over
0
3
in
step
15
catalytic
converter
is
malfunctioning
Replace
catalytic
con
verter
CHECKING
FLOOR
TEMPERATURE
WARNING
SYSTEM
INSPECTION
Floor
warning
temperature
system
Apply
parldng
brake
Shift
gears
into
Neutral
for
manual
transmission
and
Neutral
or
Park
for
automatic
transmission
1
Ensure
that
floor
tern
perature
warning
lamp
lights
when
ignition
switch
is
turned
to
the
S
position
If
not
check
lamp
for
burned
bul
bs
ENGINE
LUBRICATION
SYSTEM
SERVICE
DATA
AND
SPECIFICATIONS
Oil
pump
Standard
Wear
limit
mm
in
0
04
to
0
08
0
0016
to
0
0032
less
than
0
12
0
0047
0
15
toO
21
0
0059
to
0
0083
0
20
0
0079
0
20
0
0079
0
5
0
0197
Rotor
side
clearance
rotor
to
bottom
cover
Rotor
tip
clearance
mm
in
Outer
rotor
to
body
clearance
mm
in
Oil
pressure
regulator
valve
Oil
pressure
at
idling
Regulator
valve
spring
Free
length
Pressured
length
Regulator
valve
opening
pressure
kg
cm2
psi
0
8
to
2
8
II
to
40
mm
in
mmOn
kg
em2
psi
52
5
2
067
34
8
1
370
3
5
to
5
0
50
to
71
Tightening
torque
Oil
pump
bolt
Oil
pump
cover
bolt
Regulator
valve
cap
nut
kg
m
ft
lb
kg
m
ft
lb
kg
m
ft
Ib
1
1
to
1
5
8
0
to
10
8
0
7
to
1
0
5
1
to
7
2
4
to
5
29
to
36
TROUBLE
DIAGNOSES
AND
CORRECTIONS
Condition
Probable
causes
Corrective
actions
Oil
leakage
Damaged
or
cracked
body
cover
Oil
leakage
from
gasket
Oil
leakage
from
regulator
valve
Oil
leakage
from
blind
plug
Replace
Replace
Tighten
or
replace
Replace
Decreased
oil
pressure
Leak
of
oil
in
engine
oil
pan
Dirty
oil
strainer
Damaged
or
worn
pump
rotors
Faulty
regulator
Use
of
poor
quality
engine
oiL
Correct
Clean
or
replace
Replace
Replace
Replace
Warning
light
remains
on
engine
running
Decreased
oil
pressure
Oil
pressure
switch
unserviceable
Electrical
fault
Previously
mentioned
Replace
Check
circuit
Noise
Excessive
backlash
in
pump
rotors
Replace
EL
5
j
EC231
Thermal
vacuum
valva
o
o
m
Emission
Control
System
0
o
o
o
l
l
@
The
thermal
vacuum
valve
is
mounted
in
the
engine
thermostat
housing
It
detects
engine
coolan
t
tem
perature
by
means
of
a
built
in
bi
metal
and
opensor
closes
the
vacuum
passage
in
the
thermal
vacuum
valve
mt
li
t
00
t
EC232
Fig
EC
54
Thennal
vacuum
valve
To
E
G
R
control
valve
From
carburetor
1
Spring
2
Bi
metal
3
O
ring
E
G
R
warning
system
The
E
G
R
warning
system
install
1
Diaphragm
spring
2
Diaphragm
3
Valve
shaft
4
Valve
5
Valve
Seat
6
Valve
cham
ber
Fig
EC
53
E
G
R
control
value
When
the
vacuum
passage
is
open
the
carburetor
suction
vacuum
is
applied
to
the
diaphragm
of
the
E
G
R
con
trol
valve
to
actuate
the
taper
valve
connected
to
the
diaphragm
theconsiiiictlo
nlie
thermal
vacuum
valve
is
shown
below
ed
independently
of
the
E
G
R
con
trol
system
monitors
the
distance
the
car
has
travelled
and
indicates
when
EC
22
the
E
G
R
control
system
must
be
checked
The
E
G
R
warning
system
consists
of
an
odometer
switch
detector
drive
counter
E
G
R
warning
lamp
and
harnesses
When
the
earn
in
the
odom
eter
switch
connected
to
the
speed
ometer
turns
once
for
each
OAkm
4
mile
the
contact
point
of
the
elec
trica
circuit
closes
allowing
electric
current
to
flow
through
the
magnet
coil
of
the
detector
drive
counter
Thus
energized
the
magnet
coil
ac
Wates
the
latchet
to
turn
the
c
unter
wheel
by
one
pitch
When
the
number
of
counts
reaches
50
000
the
latchet
drops
in
a
groove
provided
on
the
periphery
of
the
counter
wheel
to
activate
the
detector
drive
counter
switch
Then
the
E
G
R
warning
lamp
comes
on
indicating
that
the
E
G
R
control
system
Should
be
checked
The
detector
drive
coun
teT
is
equip
ped
with
an
odometer
which
can
tell
when
to
service
the
E
G
R
contr0
I
system
After
completing
periodic
check
reset
the
odometer
to
zero
by
hand
proceeding
as
follows
1
Remove
grommet
installed
on
the
side
surface
of
detector
drive
counter
unit
2
insert
a
bar
or
a
screwdriver
tip
into
the
hole
from
which
grommet
has
been
removed
and
press
down
knob
provided
in
the
detector
drive
counter
for
resetting
The
E
G
R
warning
lamp
comes
on
under
the
following
circumstances
1
When
the
number
of
counts
has
reached
50
000
In
this
case
the
lamp
indicates
that
E
G
R
control
system
must
be
checked
2
When
operating
starter
motor
Notes
a
It
is
an
indication
of
problem
in
the
E
G
R
warning
lamp
or
problems
in
the
point
or
in
the
harnesses
if
the
lamp
does
not
light
at
50
000
counts
b
The
E
G
R
warning
system
is
mounted
on
all
620
models
except
those
bound
for
California
and
Canada
4
E
G
R
warning
system
EC251
Detector
drive
counter
Detecfor
drive
counter
is
secured
on
the
top
of
R
H
hoodledge
panel
in
engine
room
To
remove
detector
drive
counter
disconnect
w
COJUlector
and
loosen
two
bolts
securing
detector
drive
counter
to
hoodledge
panel
2
E
G
R
warning
lamp
E
G
R
warning
lamp
is
mounted
at
the
top
cen
ter
of
instrument
pad
To
remove
E
G
R
warning
lamp
proceed
as
follows
1
Remove
masking
panel
On
models
equipped
with
radio
remove
warning
lamp
from
under
in
strument
panel
2
E
G
R
warning
lamp
is
a
twist
type
Remove
lamp
and
socket
as
an
assembly
Push
and
twist
lamp
off
can
EC554
Fig
EC
60
Removing
E
G
R
warning
lamp
Emission
Control
System
3
Odometer
switch
Odometer
switch
is
mounted
on
the
back
side
of
speedometer
Cam
in
the
odometer
switch
is
rotated
by
the
speedometer
To
dismount
odometer
switch
proceed
as
follows
I
Dismount
combination
meter
as
sembly
2
Remove
meter
front
cover
and
take
off
clips
and
screws
to
dismount
shadow
plate
3
Loosen
screws
securing
speed
ometer
to
printed
circuit
housing
then
remove
speedometer
4
Remove
two
screws
securing
odomete
switch
to
the
back
side
of
speedometer
and
detach
odometer
switch
EC239
Fig
EC
61
Removing
odometer
switch
InstaUatlon
To
install
reverse
the
removal
pro
cedure
EC24
V
r
CID
1
Detector
drive
counter
2
E
G
R
warning
lamp
3
Speedometer
Fig
EC
59
E
G
R
warning
y
tem
INSPECTION
Checking
E
G
R
control
system
in
its
mounted
conditionS
I
Make
a
thorough
visual
check
of
E
G
R
control
system
If
necessary
wipe
away
oil
to
facilitate
inspection
If
any
hoses
are
cracked
or
broken
replace
2
With
engine
running
check
E
G
R
warning
system
for
proper
function
Make
sure
that
E
G
R
warn
ing
lamp
lights
when
ignition
switch
is
turned
to
START
position
starter
mo
tor
runs
If
E
G
R
wanung
lamp
does
not
light
inspect
harnesses
and
con
nectors
or
replace
warning
lamp
Then
turn
ignition
switch
to
ON
position
and
check
the
following
items
I
If
odometer
of
detector
drive
counter
has
not
reached
50
000
counts
make
sure
that
E
G
R
warning
lamp
does
not
light
2
If
odomete
of
detector
drive
counter
has
attained
50
000
counts
make
sure
that
E
G
R
warning
lamp
lights
If
warning
lamp
does
not
light
check
harnesses
connectors
and
de
tector
drive
counter
replace
warning
lamp
or
detector
drive
counter
if
necessary
Notes
Operation
oC
E
G
R
warning
lamp
is
as
Collows
REMOVAL
AND
INSPECTION
Removal
and
inspection
can
be
done
as
follows
Removal
Catalytic
converter
1
Apply
parking
brake
2
Place
wheel
lock
under
each
tire
3
Jack
up
the
vehicle
4
Remove
lower
shelter
of
catalytic
converter
5
Dismount
catalytic
converter
EC453
Fig
EC
69
Removing
catalytic
conuerter
Inspection
Preliminary
inspection
Visually
check
condition
of
all
component
parts
including
ho
s
tubes
and
wires
replace
if
necessary
Refer
to
Inspection
of
A
I
S
on
page
EC
17
Catalytic
converter
Whether
catalytic
converter
is
nor
mal
or
not
can
be
checked
by
ob
serving
variation
in
CO
percentage
The
checking
procedure
is
as
follows
Apply
parking
brake
Shift
gears
into
Neutral
for
manual
transmission
and
Neutral
or
Park
for
automatic
transmission
1
Visually
check
catalytic
converter
for
damage
or
cracks
Emission
Control
System
2
Remove
air
hose
between
5
way
connector
and
air
check
valve
Plug
the
disconnected
hose
to
prevent
dust
from
entering
Refer
to
page
ET
12
3
Check
carburetor
pipes
for
proper
connection
4
Warm
up
engine
sufficiently
5
Race
engine
1
500
to
2
000
rpm
two
or
three
times
under
no
load
then
run
engine
for
o
e
minute
at
idling
speed
6
Adjust
throttle
adjusting
screw
until
engine
attains
to
specified
speed
Refer
to
page
ET
10
7
Check
ignition
timing
If
neces
sary
adjust
it
to
specifkations
Refer
to
page
ET
10
B
Adjust
idle
adjusting
screw
until
specified
CO
percentage
is
obtained
Refer
to
page
ET
12
9
Repeat
the
adju
stment
process
as
described
in
steps
5
to
8
above
until
specified
CO
percentage
is
obtained
Note
Adjustment
in
step
9
should
be
made
ten
minutes
after
engine
has
wanned
up
10
Race
engine
1
500
to
2
000
rpm
two
or
three
times
under
no
load
and
make
sure
that
specified
CO
per
centage
is
obtained
11
Remove
cap
and
connect
air
hose
to
air
check
valve
If
idling
speed
increases
readjust
it
to
specified
speed
with
throttle
ad
justing
screw
12
WaRn
up
engine
for
about
four
minutes
at
2
000
rpm
under
no
load
13
Measure
CO
percentage
at
idling
speed
After
step
12
has
been
coin
pleted
wait
for
one
minute
before
making
CO
percentage
measurement
14
If
CO
percentage
measured
in
step
13
is
less
than
0
3
the
catalytic
converter
is
normal
15
If
CO
percentage
measured
in
step
13
is
over
0
3
recheck
A
I
S
and
replace
air
check
valve
Then
perform
inspection
steps
12
and
13
EC
27
16
If
CO
percentage
is
still
over
0
3
in
step
15
catalytic
conyerter
is
malfunctioning
Replace
catalytic
con
verter
INSTALLATION
To
install
reverse
the
removal
pro
cedure
Bolt
lightening
torque
specifications
Tightening
torque
Catalytic
converter
2
6
to
3
4
kg
m
19
to
25
ft
Ib
FLOOR
TEMPERATURE
WARNING
SYSTEM
DESCRIPTION
The
floor
temperature
warning
system
consists
of
a
floor
temperature
sensing
switch
installed
on
the
vehi
cle
s
floor
floor
temperature
relay
and
a
warning
lamp
on
the
instrument
panel
and
wires
that
connect
these
parts
When
the
floor
tempera
ture
rises
to
an
abnormal
level
the
warning
lamp
will
light
to
call
the
attention
of
the
driver
The
wiring
diagram
of
this
system
and
location
of
the
floor
temperature
sensing
switch
are
ilIus
trated
in
Figures
EC
70
and
EC
71
Floor
temparature
warning
lamp
Refer
to
Figure
EC
74
for
the
loca
tion
of
this
part
L
1t
1
RAt
Fig
EC
74
Location
of
floor
temperature
warning
lamp
INSTALLATION
To
install
reverse
the
order
of
rem
ovaL
INSPECTION
Floor
warning
temperature
system
Apply
parking
brake
Shift
gears
into
Neutral
foI
manual
transmission
and
Neutral
or
Park
for
automatic
transmission
1
Ensure
that
floor
temperature
warning
lamp
lights
when
ignition
switch
is
iumed
to
the
S
position
If
not
check
lamp
for
burned
bulbs
Replace
bulb
if
bulb
is
burned
out
If
bulb
is
not
burned
trace
wire
s
back
to
ignition
switch
Repair
or
replace
if
necessary
2
Be
sure
that
floor
temperature
is
cool
below
800C
1760Fj
before
carrying
out
the
following
procedure
I
Remove
rearseat
2
Ignition
switch
is
turned
to
the
IG
position
3
Ensure
that
floor
temperature
warning
lamp
goes
out
4
Heat
surrounding
areas
of
floor
temperature
sensing
switch
with
a
proper
heater
to
ensure
that
floor
temperature
warning
lamp
glows
when
floor
is
heated
to
the
specifications
as
shown
in
the
table
below
Emission
Control
System
Temperature
sensing
switch
Contact
close
Temperature
warning
lamp
Off
Contact
open
On
Note
Avoid
heating
floor
tempera
ture
sensing
switch
directly
If
lamp
does
not
glow
check
floor
temperature
sensing
switch
connector
for
continuity
with
a
circuit
tester
If
continuity
should
exist
after
heated
surrounding
areas
of
floor
tem
perature
sensing
switch
replace
tem
perature
sensing
switch
If
con
tinuity
does
not
exist
trace
the
wiring
back
to
relay
or
check
the
following
step
3
Repair
or
replace
wire
s
if
necessary
Note
The
floor
temperature
sensing
switch
may
be
heated
through
the
floor
by
a
proper
heater
3
Turn
ignition
switch
to
the
IG
position
and
disconnect
floor
temper
ature
sensing
connector
The
lamp
should
remain
on
If
not
check
floor
temperature
relay
for
continuity
with
2
00
r
I
141
J
To
floor
temperatwe
warning
lamp
2
From
S
position
3
From
IG
position
4
From
ignition
switch
5
To
floor
temperature
sensing
switch
O
When
floor
temperature
warning
lamp
lights
Check
floor
temperature
warning
lamp
1
Open
or
shorj
circuit
in
wiring
harness
2
Check
fuel
system
with
regard
to
the
following
items
Refer
to
Inspec
lion
of
Fuel
System
EC
29
Floor
temperature
Below
1050C
221
OF
Above
1050C
221
OF
a
circuit
tester
Referring
to
the
following
floor
temperature
relay
if
relay
is
normal
trace
wire
s
back
to
ignition
switch
Repair
faulty
wiring
Floor
temperature
relay
When
checking
floor
temperature
relay
for
unit
remove
it
and
proceed
as
follows
1
Check
for
continuity
between
@
and
ID
Continuity
should
exist
Check
for
continuity
between
CD
and@
Continuity
should
exist
Check
for
continuity
between
CD
and
@
Continuity
should
not
exist
2
Apply
a
12
volt
doc
across
@
and
ID
to
ensure
that
continuity
exists
between
CD
and
@
and
that
con
ti
nuity
does
not
between
CD
and
@
If
test
results
dn
not
satisfy
the
above
replace
the
floor
temperature
relay
EC344
Fig
EC
75
Checking
floor
temperature
relay
1
Float
level
2
Choke
3
Normal
fuel
supply
system
Prima
ry
and
secondary
4
Accelerator
pump
5
Power
valve
6
B
C
D
D
7
Fuel
strainer
8
Air
cleaner
Condition
Engine
Electrical
System
Probable
cause
Starting
motor
cranks
slowly
Dirty
or
worn
commutator
Armature
rubs
field
coil
Damaged
solenoid
switch
Starting
motor
operates
but
does
not
crank
engine
Worn
pinion
Locked
pinion
guide
Worn
ring
gear
Starting
motor
will
not
disengage
even
if
ignition
switch
is
turned
off
Damaged
solenoid
switch
Damaged
gear
teeth
The
charging
circuit
consists
of
the
battery
alternator
regulator
and
necessary
wiring
to
connect
these
parts
The
purpose
of
this
system
is
to
convert
mechanical
energy
from
the
engine
into
electrical
energy
which
is
used
to
operate
all
electrically
operat
ed
units
and
to
keep
the
battery
fully
charged
When
the
ignition
switch
is
set
to
ON
current
flows
from
the
battery
to
ground
through
the
ignition
switch
voltage
regulator
IG
terminal
primary
side
contact
point
PI
movable
contact
point
P2
voltage
regulator
IF
terminal
alternator
IF
terminal
rotor
field
coil
and
alternator
E
terminal
as
shown
in
Figure
EE
23
by
full
line
arrow
marks
Then
the
rotor
in
the
alternator
is
excited
On
the
other
hand
current
flows
from
the
battery
to
ground
through
the
ignition
switch
warning
lamp
voltage
regula
tor
L
terminal
lamp
side
contact
point
P4
movable
contact
point
P5
and
voltage
regulator
E
termi
nal
as
shown
by
dotted
line
arrow
CHARGING
CIRCUIT
marks
Then
the
warning
lamp
lights
When
the
alternator
begins
to
op
erate
three
phase
alternating
current
is
induced
in
the
stator
armature
coil
This
alternating
current
is
rectified
by
the
positive
and
negative
silicon
diodes
The
rectified
direct
current
output
reaches
the
alternator
A
and
E
terminals
On
the
other
hand
the
neutral
point
voltage
reaches
N
and
E
terminals
nearly
a
half
of
the
output
voltage
and
current
flows
from
voltage
regulator
N
terminal
to
E
terminal
or
ground
through
the
coil
VCI
as
shown
in
Figure
EE
24
by
the
dotted
line
arrow
marks
Then
the
coil
VCI
is
excited
and
the
movable
contact
point
IPS
comes
into
contact
with
voltage
winding
side
contact
point
P6
This
action
causes
to
turn
off
the
warning
lamp
and
complete
the
voltage
winding
circuit
as
shown
by
the
full
line
arrow
marks
When
the
alternator
speed
is
in
creased
or
the
voltage
starts
to
rise
excessively
the
movable
contact
point
EE
12
Corrective
action
Clean
and
repair
Replace
assembly
Repair
or
replace
Replace
Repair
Replace
Repair
or
replace
Replace
damaged
gear
P2
is
separated
from
the
primary
side
contact
PI
by
the
magnetic
force
of
coil
VC2
Therefore
registor
RI
is
applied
into
the
rotor
circuit
and
output
voltage
is
decreased
AJ
the
output
voltage
is
decreased
the
movable
contact
point
P2
and
primary
side
contact
Pin
comes
into
contact
once
again
and
the
alternator
voltage
increases
Thus
the
rapid
vibration
of
the
movable
contact
point
IPl
maintains
an
alternator
output
voltage
constant
When
the
alternator
speed
is
further
increased
or
the
voltage
starts
to
rise
excessively
the
movable
contact
point
P2
comes
into
contact
with
secondllJ
side
contact
point
P3
Then
the
rotor
current
is
shut
off
and
alternator
output
voltage
is
decreased
immediately
This
action
causes
movable
contact
n
to
separate
from
secondary
contact
P3
Thus
the
rapid
vibration
of
the
movable
contact
point
P2
or
breaking
and
completing
the
rotor
circuit
maintains
an
alternator
output
voltage
constant