1979 DATSUN 210 ignition

CAUTION

Do
not
allow
water
to

get
inside
the

thermal
vacuum
valve

EC161A

Fig
EC
77
Ch

c

jng
Th
rmal
Vacuum

Valve

3

port
type

Thermal

vacuum

valve

2

port
type

Dismount
thermal

vacuum
valve

from

engine

Note

Before

dismounting
drain
en

gine
c
oolant
from

engine

Apply
vacuum
to
thermal

vacuum

valve
and

check
to
be
sure

that
ther

SPARK
TIMING

CONTflOL

SYSTE
VI

DESCRIPTION

The

spark

timing
control

system
is

designed
to
control

the
distributor

vacuum
advance

under

varying

driving

conditions
so

as
to
reduce
He
and

NOx
emissions
Emission
Control

System

mal

vacuum
valve

opens
or
closes
in

response
to

engine
coolant

tempera

ture

as

specified

Thermal

vacuum
valve

should

open

at

a

temperature
specified
below

com

pleting
the
vacuum

passage

Thermal

vacuum
valve

opening

temperature

40
to

63
c
104
to
1450

Fl

CAUTION

00

not
allow
water
to

get
inside
the

thermal1
acuum
valve

Jl
i

g

J

eC
42

Fig
EC
78
Ch

ckjng
Thermal
Vacuum

Valve

M
T
model

When

the
transmission

is
shifted

into
the

4th
or
5th

gear
the
electric

current
flows
into

the
vacuum

switch

ing
valve
The
vacuum

switching
valve

is

then
actuated
and

close
the
vacuum

passage
As

a

res
li
the

distributor

fully
advances

its

ignition

liming

When
the
transmission
is

shifted

into

any
gear
other

than
4th
and
5th

current
flow
is

interrupted
The

vacu

umswitclting
valve
is

then
deactuated

and
the

vacuum
leak

passage
is

E026
BoP

T
valve

1

DiSCOIUlect
two
vacuum
hoses

on

BY
T
valve

2

Plug
one
of
two

port
of
BY
T

valve

Apply
a

pressure
above
SO

nimH20

1
97

inHP
to
B
P
T
valve
and

orally
suck
back
other

port
of
B
P
T

valve

as
shown
below

to
check
for

leakage
If

a
leak
is
noted

replace

valve

Apply
pressure
above

SO
mmH10
2
inH10

EC311A

Fig
EC
79

Checking
B
P
T
Valve

opened
This
weakens
the
vacuum

signaUransmitted
from
the
carburetor

As
a
result
the

ignition
timing
of
the

distributor
is

slightly
advanced

On
U
s
A
models

except
for

the

FU
model
a
thermal

vacuum
valve

3

port
type
is
added
on
the

vacuum

line
between
the
carburetor
and
dis

tributor

The
vacuum

signal
is
controlled

by

this
thermal

vacuum
valve

in
accord

ance
with
variation

in

engine
cooling

water

temperature

Emission
Control

System

M
T
models
For
U
S
A
models
except
FU
model

Distributor

r

To

B
P
T

valve

HIGH
vacuum

valve

OrifiCO

i
jarburetor

l

Vacuum

switching
valve

Ignition
switch

I

To
air

cleaner

Fuse

8
Top
switch

4th
5th

Others
Battery

8
ON

OFF

Canada
and
FU
models

OM

1orifico

F
JCMburetor

To
air
cleaner

1
V
cuum

switching
valve

To

intake
manifold
FU
models
only

Fuse

G1j
Ignition
switch

Battery

7

EJ
Top
switch

4th
5th
ON

Others
OFF

EC

27
Water

temperature

OC
OF

Below

5
to

18
41
to
64

Between

I
5

to
18
and

50
t063

41
to

64
and

I
122

to
145

I

I
Above
50
to
63

122
to
145
Transmission

ear

position

Top

4th
and

5111

Other
than

Top

Top

4th
and
5th

Other
than

Top

Top

4th

and
5th

Other
than

Top

Non
California

models

only
Thermal

Spark

timing
vacuwn

valve

Fully

advanced

I
Closed

Partially

advanced

Partially

I
advanced

Partially

I
Open

ad

ced

Fully

I
advanced

I
Closed

Partially

advanced

EC162A

Transmission
gear
Vacuwn

Ignition
timing
switching

position

valve

Top
4th
and
5th

Fully
advanced
Closed

Other
than

Top
Partially
advanced

Open

EC371A

Fig
EC

BO

Spork
Timing
Control

Sy
tem
MIT

Emission

Control

System

AfT
models

Spark
timing
control

systems
on

Arc
models

are
divided
into
3

types

On
California

models
a

top
detect

ing
switch
i3

added
on
the
line

pressure

circuit
beside

the
transmission
case
The
vacuum

switching
v
iJve

and

thermal
vacuum
valve

3

port

type

control

the

spark
advance

by
the

engine
cooling
temperature
and

gear

position

On

non
California
models

excpt

AfT
models
Califomle
models

Distributor

To
B
P

T

valve

1
Orifice

i1J

1
ICh

OJ

L
J
To
air

cleaner

Fu

EJ
Top
5witch

D3
R
ON

Others
4
OFF

Battery

Non
californla
models

except
Canada

To
air
cleaner

l

o

o
0

Ig

o

g
00

00
00

r
Vacuum

delay
valve

Thermal

vacuum

valve

Water

temperature

OC
OF
Thennal

vacuum

valve

Oosed
Ignition
timing

Below
5
10
18

41
io
64

Between

5
to

IB
and

50
to
63

411064
and
122
10
145

Above
50
to
63

122
to
145
Fully
advanced

PartiaDy
advanced

Open

Fully
advanced
Oosed

EC2a
Water

temperature

OC
oF

Bdow

51018
41
to
64

Between

5
to
18

and
50
10
63

411064
and

12210145

Above
50
to

63

122
to

145

Distributor

Carburetor

J

l
Canada
the
thermal

vaCUUDl

Vl
lve

3

port
type
and
vacuum
delay
valve

control
the

spark
advance

On

Canada
models
the
vacuum

delay
valve
is
installed

midway
on
the

vacuum

passage
from
the

carburetor

to

the
distributor

Transmission

gear

position
Thermal

vacuum

va1ve
Ignition
timing

R
and

D

3
FuBy

advanced

Other
than

Rnand

D
3
Oosed

Partially

advanced

R

a
gd

D
3

Other
than

R
and

0

3
Partially

advanced
Open

R
aud

D

3
Fully

advanced

Other
than

R
and

m
3
Oosed

Partially

advanced

Canada
models

Vacuum

delay
valve
Distributor

Carburetor

J

l

EC163A

Fig
EC
81

Spark

Timing
Control

Sy
tem

Af1

J

EC173A

Fig
EC

95

Disconnecting
Vacuum

Switching
Valve
Connector

3

Apply
parking
brake
and

keep

brake

pedal
fully

depressed

4

Check

continuity
between
two

specified
terminals
ai

function
test

connector
with

gearshift
lever
in
R

or
N

position

The

top
detecting
switch
is

func

tioning
properly
if
the

continuity
is

as

following
table

If
not

replace
the
switch

N

position
No

R

position
Yes

Note
At

idling

CAUTION

Never

race
the

engine
or
car
will

creep

r

q

EC329A

Fig
EC
96

Checking
Top

Detecting

Switch

Arr
model
Emission
Control

System

Entire

system

Non
California
AfT
models

except
Canada

1

Ensure
that
vacuum

hoses
are

properly
connected
to

their

positions

And

confirm
that

gearshift
lever
is
in

P

position

2
Disconnect

vacuum
hose
atdis

tributor

vacuum
controller

3

While

engine
cooling
wat
r

is
be

low
SOoC

1220F
race

engine
and

check
vacuum
for
distributor
If
vacu

um
is
felt
check

thermal
vacuum
valve

3

port
type

4

After

engine
is

sufficiently

warmed

up
repeat
the
above

opera

tion

In

this
case
vacuum
should
be
felt

If
not
check
thermal

vacuum
valve

Vacuu
m

switching
valve

If

spark
timing
does
not

vary
at
all

in

checking
entire

system
check
vacu

um

switching
valve
i
follows

I
Warm

up
engine

sufficiently

2

Disconnect

vacuum

switching

valve

lead
wires

3

Set

timing
light
and

keep
engine

speed
at

approximately
1

600

rpm
On

AfT
models

geaishiftlever
should

be

in

N
or
P

4

Apply
l2V

battery
voltage
to

one
of
two

lead
wires

from
vacuum

switching
valve
Then
connect
the

other
lead
wire

to

ground

At

this
time

spark
timing
should

change

appioximately
by
50

If
it
does
not

replace
vacuum

switching
valve

EC175A

Fig
EC

97

Checking
Vacuum

Switching
Valv

Thermal
vacuum
valve

3
port

type
U
s
A
models

except
FU

model

Remove

thermal
vacuum

valve
from

engine
Inhale
air
from

port
of

spark

EC32
timing
amttol

systetn
andcheck
to

sure
that

thermal
vacuum
valve

opens

or
closes
in

response
to
its

tempera

ture

Thermal

vacuum
walye

closing

temperature

Above
50
to

63
c

122
to
1450
F

Below
5
to

1SoC

41
to

64
Fl

J

EC161A

Fig
EC
98

Checking
Thermal

Vacuum

Valv

CAUTION

Do

not
allow

water
to

get
inside

the

thenna

vacuum
valve

Top
detecting
switch

M
T
models

To

check

top
detecting
switch
for

proper
ON
OFF

operation
contact

leads
of

an
ohmmeter

with
swiich

lead

wires
and
shift
transmiosion

from

TOP
to
other
forward

gear
and

vice

versa
If

switch
does
not

operate
prop

erly
replace

Continuity
of

top
detecting
switch

should
be

a
follows

Other
than

4th
and
5th
No

4th

and
5th

Yes

Note
In

checking

continuity
oCthe

switch

keep
the

ignition
switch

OFF
Otherwise
the

circuit
tester

will

get

damaged

e

In
o

L

1

Ignition
switch

2
Vacuum
switching

v3
lve

3

Top
detecting
switch

4
Function
check
connector

EC330A

i

Fig
EC
99

Checking
Top
Detecting

l

Switch

Vacuum

dela
valve

Remove
vacUum

delay
valve

2

Blow
air
from
th

port
of

the

distributor
side
The
vacuum

delay

valve
is
in

go
ij
condition
if
the
air

flows

through
the
valve

3

Try

again
from
the
opposit

side

of
the
valve
Th
valve
is
in

goo

condition
if
th
a
flow
resistance
is

greater
than

the

step
2
abov

Distributor
side

Carburetor
side

Distribu
tor
side

Carburetor
side

EC346

Fig
EC
100

Checking
Vocuum

Dewy
Valve
Emission

Control

Syst
m

4

If
the
condition
of

spark
delay

valve
is

questionable
dip
port
into

a

cup
filled
with
water
Blow
air
from

brown
face
side
Small
air
bubbles

should

appear

CAUTION

Be
c
areful
to
avoid

entry
of
oil
or
dirt

into
valve

7

E
C279

Fig
EC
101

Checking
Vacuum

D

lDy
Valve

CATALYTIC

CONVERTER

California
dels

DESCRIPTION

1

The

catalytic
converter

accelerates

the

chemical
reaction
of

hydrocarbons

CD
0
He
and

carbon
monoxide
O
in

the
exhaust

gas
and

changes
them
into

non
harmful

carbon
dioxide

C02

and
water

H20
This
chemical

reac

tiOD

process
requires
the

proper
a

mount
of
air
which
is

supplied
by
the

air

pump
Refer
to
the
item
AJ

S

This
air
is
called

secondary
air

The

Catalytic
converter
is
mounted

0

the
models
destinbd
for
California

OPERATION

Exhaust

gas
emitted

from
the
en

gine
contains

some
harmful
substances

due
to

incomplete
combustion
in

the

combustion
chamber
The
air

injection

stem
i

designed
to
reduce
the

con

tent
of

such
substances
in

the
exhaust

gas
In
this

system
the

secondary
air

is

led
from
the
ch
ck
valve
and

injected

in
o
the

exhaust
manifold
With
this

injection
of

the

secondary
air

hydro

carbons

He
and
carbon
monoxide

CO
in
the

exhaust

gas
are
gradually

oxidized
with

oxygen

02
in
the

secondary
air

and
converted
into
nOD

harmful
carbon
dioxide

C02
and

water

HP

The

catalytic
converter
further

cleans

engine
exhaust

gas
Through

catalytic
action
it

changes
residual

hydrocarbons
and

carbon
monoxide

contained
in

exhaust

gas
into

carbon

dioxide
and
water
before
exhaust

gas

is

discharged
to
the

atmosphere

0

Secondary
air

Carbon
monoxide

hydrocarbon

Carbon
dioxide

gas

Nater

EC

i

A

I
Front
tube

2

Catalytic
converter

3
Center
tube

4
Main
murner

EC
33
EC215

Fig
EC

I02
Function
of

Catalytic
Converter

DATSUN

210
Model

8310
Series

SECTIONEE

ENGINE
ELECTRICAL
SYSTEM

CONTENTS

BATTERY

CHECKING
ELECTROLYTE
LEVEL

CHECKING

SPECIFIC
GRAVITY

CHARGING

INSTALLATION

STARTING
MOTOR

STARTING
CIRCUIT

CONSTRUCTION

REMOVAL
AND
INSTALLATION

DISASSEMBL
Y

CLEANING
AND
INSPECTION

ASSEMBL
Y

TEST

CHARGING

CIRCUIT

ALTERNATOR

DESCRIPTION

REMOVAL

DISASSEMBLY

INSPECTION
AND
REPAIR

ASSEMBLY

ALTERNATOR
TEST

REGULATOR

DESCRIPTION

INSPECTION

IGNITION

CIRCUIT
EE
2

EE
2

EE
2

EE
3

EE
3

EE
4

EE
4

EE
5

EE
6

EE
6

EE
6

EE
8

EE
8

EE
10

EE
13

EE

13

EE
14

EE
14

EE
14

EE
16

EE
17

EE
1B

EE
18

EE

18

EE

20
DESCRIPTION

DISTRIBUTOR

CONSTRUCTION

CHECKING
AND

ADJUSTMENT

I
ISASSEMBL
Y
AND
ASSEMBLY

IC
IGNITION
UNIT

DESCRIPTION

REMOVAL
AND

INSTALLATION

CHECKING
IC

IGNITION
SYSTEM

IGNITION
COIL

SPARK

PLUG

INSPECTION

CLEANING
AND
REGAP

SERVICE

DATA
AND

SPECIFICATIONS

GENERAL
SPECIFICATIONS

INSPECTION
AND
ADJUSTMENT

TIGHTENING
TORQUE

TROUBLE

DIAGNOSES
AND

CORRECTIONS

I
BATTERY

II
STARTING
MOTOR

III
ALTERNATOR

Including
voltage
regulator

IV
IGNITION
CIRCUIT
EE
20

EE
22

EE
22

EE
23

EE

23

EE
24

EE
24

EE
25

EE
25

EE
28

EE
29

EE

29

EE
29

EE
30

EE
30

EE
31

EE
33

EE

34

EE
34

EE
35

EE
36

EE
37

Engine
Electrical

System

STARTING

MOTOR

STARTING
CIRCUIT

FUSIBLE
LINK
FUSE

lOA

INHIBITOR
SWITCH

LJ

J
IAfT

onlv
I
IGNITION

SWITCH

7
MIT
OnIY

STARTING

I
MOTOR

L
u

l

l

lJ
INHIBITOR
RELAY

IAfT
only
BATTERY

f

1J
INHIBITOR

RELAY

I

I
A
T

onlyl

I

B

l
I

BY
BY

VA

j
M
T

only

I
J

ti

FUSIBLE

LINK

On
IGNITION

SWITCH

BATTERY
YR

L

L

YR
tl

WR

FUSE
BLOCK

c
J

GO

c
J
C
lOA

S
L

BY

p
BL

STARTING

MOTOR

INHIBITOR

SWITCH

IAIT

only

EE741

Fig
EE
5
Circuit

Liagrom
of
Starting
System

EE4

The

charging
circuit
consists
of
a

battery
an

alternator

incorporating
an

IC

voltage
regulator
and

wiring
that

connects
these

parts

The

purpose
of

this

system
is
to

convert
mec
hanka

energy
from
the

engine
into
electrical

energy
which
is

used
to

operate
all

electrically
operat

ed
units
and
to

keep
the

battery

fully

charged

With
the

ignition
switch
in
ON
the

circuit
between

transistor
uTr

I
of
the

lC

voltage
regulator
and

ground
is

closed
Current
from
the

battery
then

flows

along
the
route

shown

by
the

arrOW
in

Fig
EE
26

turning
on
the

charge

warning
lamp
and

flowing
on

through
terminal
L

to
excite
the

rotor

When
the
alternator

begins
to

oper

ate
three

phase
alternating
current
is
ngine
Elect
ical

System

CHARGING
CIRCUIT

indicated

in
the
stator

coil
This
alter

nating
current
is

rectified

by
the

posi

tive
and

negative
silicon

diodes

When
the

voltage
at
terminal
8
is

higher
than

battery
voltage
current

produced
at
the

stator
flows

to
re

charge
the

battery
While
the

battery
is

being
re

charged
the

voltage
at
termi

nal
L

is

equal
to
that
of
terminal

8
At
this

point
there
is
no

voltage

differential
on
either
side
of
the

charge

warning
lamp
which
causes
the

charge

warning
lamp
to
turn
off
In

other

words
current
does

not
flow
from
the

battery
to
terminal
L

Accordingly

current
flow

through
the
rotor
as

shown
in

Fig
EE
27

is
taken
over

by

current

produced
at
the
stator
The

circuit
between
terminal
F
and

Tr
is

then
closed
See

Fig
EE
27

The
IC

voltage
regulator
monitors
generating
voltage
to
be

applied
to
the

battery
at
terminal
S
When
current

exceeds
the

specified
value
it
then

flows

through
the
zener
diode
ZD

closing
the

circ
it

consisting
of

transis

tor
Tr
and
resistor

R1
At
this

point
current
neither
flows

through

transistor
Tr

I
to

ground
nor
to
the

rotor

thereby

reducing
the

voltage

generated
at
the

stator
See

Fig

EE
28

When

voltage
generated
at
terminal

S
is

reduced
to
the

specified
value

transistor

allows
current
to
flow

through
the

rotor

increasing
the

generating
voltage

In

this
manner

output
voltage
from

the
alternator
does

not
rise
above
the

specified
value

by
the
ON
OFF

opera

tion

of
the

rotor
coil

through
the
IC

voltage
regulator

16

L

R
l
I

01
0

ls

CHARGE
LAMP

J
011

L

e
0

u

a

M
e

i
J

0

io
o
IGNITION

a

0

09

SWITC1
R2

El1
STATOR
COIL

04
0
R

F

1
BATTERY

8

ZD

ALTERNATOR

7
I

1
AJ

TI
3

IC
VOLTAGE
REGULATOR
Aa

E

1

7

EE760

Fig
EE
26

Simplified
Charging
Circuit
Initial
excitation

current

EE
10