ignition DATSUN 210 1979 Workshop Manual

Engine
Electrical

System

Battery
Ignition
switch

CG

1

e
@

P
L
JO

L
J

Ignition
coil

r

Spark
timing

signal

I

oni
1oring

Clfcwt

0
R

Lock

Pi
k
il
preventing

c

up
co

circuit

Ln
n

Distributor
2P

fJ
1I
connector

8C

H
uty
control

ClICUlt
Power

switching

circuit

Current

limiting

circuit

Ie

ignition
unit

EE749

Fig
EE
66
Ie

Ignition
Unit
Circuit

Diagram

REMOVAL
AND

INSTALLATION
5
Disconnect

pick
up
coil
wire
from

IC

ignition
unit

Note
Holding
connector
with
needle

nose

pliers
as
shown
in

Fig
EE
68

disconnect

pick
up
coil
terminal
Be

careful
not
to

pull
lead
wire
I
Disconnect

battery
ground
cable

2

Take
off
distributor

cap
and
re

move
rotor
head

3

Disconnect
harness
connector

4

Remove
Ie

ignition
unit

securing

screws

rf

I
I

EE751

Fig
EE
68
Di
Connecting
Pick

up
Coil

Term
inal

eE750

Fig
EE
67

Removing
Ie

Ignition

Unit
6

InstaU
IC

ignition
unit
in

the

reverse
order

of
removal

EE
25
CAUTION

Before

instelling
IC

ignition
unit
mike

sure

mlting
surfaces
of

IC

ignition
unit

end
distributor
Ire
cleen
and
free
from

dust

sand
and
moisture

Note

a
When

connecting
lead
wires

to
unit

insert
lead
wire
terminal
with
fin

ger
as
shown
in

Fig
EE
69

b

Connect
lead
wires

according
to

color
marked
on

upper
face
of

grommet

EE752

Fig
EE
69

Connecting
Pick

up
Coil

Terminal

CHECKING
IC

IGNITION
SYSTEM

DESCRIPTION

To
check
the
IC

ignition

system

use
a
circuit

tester
The

ignition
per

fannance
of
the

ignition
system
at
a

high
speed
cannot
be
measured

direct

ly
However

it
can
be

checked

by

operating
a
vehicle

actually
at
a

high

speed
The
IC

ignition
system
can
be

checked

easily
by
referring
to
the

Inspection
Table
For
the

method
of

inspection
refer
to

respective
items

INSPECTION
TABLE

I

No

spark
occur

Check

high
tension
cable

NG
OK

Repair
and

lor
replace
ngine
Electrical

System

START

Check

sparking
performance

J
J
Sparks
oci
1u

IC

IGNITION
SYSTEM
OK

Check
power
supply
circuit

NG

Repair
and
or

replace
OK

Check

primary
circuit
Proceed
to

A

Proceed
to
A
NG

epair
an
or

replace
OK

Proceed
to
A
DISTRIBUTOR
ASSEMBLY
NG

lC
IGNITION
UNIT
AND
OR

PICK
UP

COIL
NG

Mealure

pick
up
coil
resistance

as
a

distributor
assembly

Except
approx
4000

Measure

igilition
coii

8terminalvoltage

Battery
voltage

t
OV

Measure

pick
up
coil
resistance

I
Ie
IGNITION
UNIT
NG

Except
approx
400n

Approx
400n

PICK
UP
COIL
NG

1
PICK

UP
COIL
OK
Replace

IC

IGNITION

Replace

I
UNI
NG

l
Meuure

pick
up
coil
resistance

Except
approx
4000
I

Check

sparking
performance

I
Replace

I

r
PICK
UP
COIL
NG

1

No

spark
occun

Sparks
occur

I
IC
IGNITION

flc
IGNITION
Proceed
to
A

Replace

UNIT
NG

i
UNIT
OK

Proceed
to
A

Replace

Proceed
to
A

CHECKING

PROCEDURE

Sparking
performance

check

L
Turn

ignition
switch
to

OFF

position

2
Disconnect
anti
dieseling
solenoid

valve
connector
to
cut
off

supply
of

fuel
to

engine

3

Disconnect

high
tension
cable

from

spark
plug

4

Keeping
high
tension

cable
end
4

to
5

mm
0

16
to
0
20
in

away
from

engine
block
rotate
starter
motor
and

check
whether
sparks
occur
across
the

clearance
JUDGMENT

Sparks
occur

IC

ignition
system
OK

In

this
case
IC

ignition
system
and

component
parts
need

not
be
checked

beyond
this

No

spark
occurs

IC

ignition
system
NG

In
case
of
NG
check

High
Tension

Cables

Nole

This
check
is

designed
to

deter

mine

only
ignition

spark
perform

ance
when

cranking

engine
If

test

results
are

satisfactory
Ibis
does

EE

26
I

Approx
400n

PICK
UP
COIL
OK

1C
IGNITION

UNIT
NG

I
Repair
and
or

replace

I
Proceed
to
A

Approx
400n

l
PICK
UP

COIL
OK

1

not

alwaY
indicate

performance

sufrlcienl
for

high
speed

operation

IOgh
tension

cable
check

Refer
to

Engine
Tune

up
for
Check

ing
Ignition
Wiring
Distributor

Cap

and
Rotor

JUDGMENT

If

high
tension

cable
is
OK
check

Power

SupplY
Circuit

If

high
tension
cable
is
NG

replace

cable

assembly

Power

suppl
circuit
check

Make

sure
that

ignition
switch
is

in
OFF

position

2

Disconnect
Ie

ignition
unit

con

nector
from
unit

3
Turn

ignition
switch
to
ON

position

4

Measure

voltage
at
the

terminal
as

shown
in

Fig
EE
70

I

I

1

Fig
EE
70
EE734

Checking
Power
Supply

Circuit

5
Turn

ignition
switch
to
OFF

position

JUDGMENT

Battery
voltage
is

indicated
OK

In
this
case

check

Primary
Circuit

Battery
voltage
is

not
indicated

NG

In

case
of

NG
check

power

supply

wirings
fusible

link

ignition
switch

and

connecto
s
for
condition
and
con

tinuity

Primer
circuit
check

I

Make
sure
that

ignition
switch
is

in
0
FF

position

2

Disconnect
IC

ignition
unit

con

nector
from
unit

3

Turn

ignition
switch
to
ON

position

4

Measure

voltage
at
the
terminal
as

shown
in

Fig
EE
7I

1
I
r

1

EE735

Fig
EE

7I

Checking
Primary

Circuit
Engine
Electrical

System

5
Turn

ignition
switch
to

OFF

position

JUDGMENT

Battery
voltage
is
indicated
OK

In
this
case
proceed
to
the

step
for

IC

Ignition
Unit
and
Pick

up
Coil

Check

Battery
voltage
is
not
indicated

NG

If
NG
check
condition
and

con

tinuity
of

primary
circuit

wirings
and

connectors
If
results
of

these

inspec

tions
are

satisfactory
check

Ignition

Coil

Ignition
coil
check

I

Make
sure
that

ignition
switch
is

in

OFF

position

2
Disconnect
harness

connector

from

ignition
coil8terminal

3
Measure
resistance
between
and

8terminals

Resistance
1

range

C2J

j

EE567

Fig
EE
72

Checking
Ignition
Coil

Assem

bly

JUDGMENT

If
resistance
value
is
0
84
to

1
02n

OK

If
resistance
value
is

other
than

the

specified
value
NG

Ie

Ignition
unit
end

pick
up

coli
check

If

power
supply
circuit

primary

circuit

and

high
tension

cables
are
in

good
order
IC

ignition
unit

and
or

pick
up
coil
are

malfunctioning

I

Make
sure
that

ignition
switch
is

in
OFF

position

2
Remove

distributor

cap
and
ro

tor

EE
27
3
Measure
resistance

between
two

terminals
of

pick
up
coil

as
a
distribu

tor

assembly
with
a
circuit
tester

1
Tester

probes

2
Grommet

3
Ie

ignition
urnt

EE736

Fig
EE

73

Measuring
Pick

up
Coil

Resistance

4
Measure
resistance

by
reversing

polarity
of
circuit

tester

probes

JUDGMENT

Approx
400n
are
indicated

Pick

up
coil
OK

IC

ignition
unit
NG

In

this
case

replace
faulty
IC

igni

tion
unit
with

new
one

Approx
400n
are
not
indicated

Condition
cannot
be

judged

Thus

proceed
to
item
5

Note
If
resistance
is

approx
4OOn

no

further

inspection
is

required

replace
IC

ignition
unit

5
Make
sure
2

pin
IC

ignition
unit

connector
is

securely
connected
to

unit

6
Turn

ignition
switch

to
ON

position

7
Measure

voltage
at

ignition
coil
8

terminal

8
Turn

ignition
switch
to
OFF

position

CAUTION

Turn

ignition
switch
off
after

releasing

test

probe
of
circuit

tester
from

nega

tive
terminal
of

ignition
coil
Failure

to
do

this
could
result
in

damage
to

circuit
tester

JUDGMENT

OV
is

indicated

IC

ignition
unit
NG

But

condition
of

pick
up
coil
can

not
be

judged
Proceed
to
the
item

for

Pick

up
Coil

Check

Bat

tery
voltage
is
indicated

Condition
cannot
be

judged

Proceed
to
item
9

9

Remove
IC

ignition
unit

Refer
to
IC

ignition
Unit
for
re

moval

10
Measure
resistance

between
two

terminals
of

pick

up
coil

JUDGMENT

Approx
40011
are
indicated

The

ignition
coil
is

an
oil
filled

type
The

ignition
coil
case
is
filled

with
oil
which
has

good
insulating
and

heat

radiating
characteristics

The

ignition
coil
has
a

greater
ratio

between
the

primary
and

secondary

windings
to

step
up
battery
voltage
to

high
voltage
This

causes

stronger

sparks
to

jump
the

spark
plug
gap

The

cap
is

made
of

alkyd
resin

which
offers

high
resistance

to
electric

arc
and

increased
insulation

When

high
tension
cable
is
installed

to

ignition
coil
there
should
be

no

clearance
between
their

caps

Note

Do
not

disconnect

high
tension

cables
from

spark
plugs
during
en

gine
running

r

EE354

1

High
tension
cable

2
Rubber
cap

Fig
EE
74
Correct
Instalhltion

of

High
Tension
Cable
Engine
Electrical

System

Pick

up
coil
OK

IC

ignition
unit

NG

Approx
40011
are
not

indicated

Pick

up
coil
NG

Condition
of
IC

ignition
unit

can

not
be

judged
Proceed
to

item
11

II

Replace
faulty
pick
up
coil
with

new

one

12
Install

original
IC

ignition
unit

13
Check

parking
performance

JUDGMENT

Sparks
occur

IC

ignition
system
IC

ignition
unit

OK

No

spark
OCCUrs

IC

ignition
unit

NG

IGNITION
COIL
If
NG

replace

faulty
IC

ignition

unit

with
new
one

P1ck
up
coil
check

I

Make
sure
that

ignition
switch

is

in

OFF

position

2
Remove

IC

ignition
unit

Refer
to

IC

Ignition
Unit
for
removal

3
Measure
resistance

between
two

terminals
of

pick
up
coil

JUDGMENT

Approx
40011
are
indicated
OK

Approx
40011
are
not

indicated

NG

If

NG

replace
faulty
pick
up
coil

with
new

one

1

@

I

rJ

1

C

I

I

i

jllll
1

t

1

Rubber
cap
for

ignition
coil

2

Secondary
tenninal

3

Cap

4

Primary
terminal

5

Spring

6

Secondary
winding

EE
28
EE578

7

Primary
winding

8

Side
core

9
Insulator

10
Center
core

11

Segment

12
Case

Fig
EE

75
Ignition
Coit

INSPECTION

I

Disconnect

high
tension

cables

from

spark
plugs
by
pulling
on

boot

not
on
cable
itself

2

Remove

spark

plugs

3

Check
electrodes
and
inner

and

outer

porcelains
of

plugs
noting
the

type
of

deposits
and
the

degree
of

electrode
erosion

Refer
to

Fig
EE

76

Normal
Brown

to

grayish
Ian
de

posits
and

slighl
electrode
wear

indicate
correct

spark

plug
heat

range

Carbon
fouled

Dry
fluffy
carbon
de

posits
on
the
insulator
and
elec

trode
are

mostly
caused

by
slow

speed
driving
in

city
weak

ignition

too
rich
fuel
mixture

dirty
air

cleaner
etc

H
is
advisable
to

replace
with

plugs

having
hotter
heat

range

Oil
fouled

Wet
black

deposits
show

excessive

oil
entrance
into

comb
us

tion
chamber

through
worn

rings

and

pistons
or
excessive

clearance

between
valve

guides
and
stems
If

the
same
condition
remains
after

repair
use
a
hotter

plug

Overheating
White
or

light
gray
insu

lator
with
black
or

gray
brown

spots
and
bluish
burnt
electrodes

indicate

engine
overheating
More

over
the

appearance
results
from

incorrect

ignition
timing
loose

spark
plugs
low
fuel

pump
pres

sure

wrong
selection
of
fuel

a

hotter

range
plug
etc

H
is
advisable
to

replace
with

plugs

having
colder
heat

range

4
After

cleaning
dress
electrodes

with
a
smaU
fme
file
to
flatten
the

surfaces
of
both

center
and
side
elec

trodes
in

parallel
Set

spark
plug

gap
to

specification

5

Install

spark

plugs
and

torque

each

plug

6
Connect

spark
plug
wires

CLEANING

AND

REGAP

Clean

spark
plugs
in
a
sand
blast
Engine
Electrical

System

SPARK

PLUG

Conventional

type

Normal

Overheating

Multi

gap
type

Nonnal

Overheating

type
cleaner
Avoid
excessive

blasting

Clean
and
remove
carbon
or
oxide

deposits
but
do
not
wear

away
porce

lain
If

deposits
are
too
stubborn

discard

plugs

After

cleaning
spark

plugs
renew

firing
surface
of
electrodes
with
file

mentioned

above
Then
check

spark

plug
gap
with
wire

feeler

gauge
All

spark
plugs
new
or
used

should
have

the

gap
checked
and
reset

by
bending

ground
electrode

EEOSO

Fig
EE
77
Setting
Spark
Plug
Gap

Except
FU
model

EE
29
Carbon

fouled

EE079

Worn

Carbon

fouled

Worn

EE601

Fig
EE

76

Spark

Plug

EE586

Fig
EE
78

Setting
Spark
Plug

Gap
FU
models

Engine
Electrical

System

DISTRIBUTOR

D4K8
18

D4K8
15

I
D4K8

16

Type
D4K8
19

I
D4K8

13
D4K8

02

Applied
model
FU
model
California

models
Canada
Non
California
models

Transmission

MfT

Firing
order

Rotating
direction

IGNITION
COIL

Type

Applied
model

Primary
voltage

Spark
gap

SPARK
PLUG

Standard

Hot

Type

Cold

Applied
model

Size
screw
dia
x

reach

mm
in
AfT
MfT
MfT
AfT
MfT
AfT

I
3
4
2

Counterclockwise

cn
30

STC
30

All

v
12

mm
in
More
than
7
0
28

BP5ES
II

BP5EQ
13

BPR5ES

L46PW
1I
L45PM
13

BP4ES
1I

BP4EQ
13

BPR4ES

L47PW
1I

L47PM
13

BP6ES
1I

BP6EQ
13

BP7ES
1I

BP7EQ
13

BPR6ES

L44PW
1I

L45PM
13

BPR7ES

L45PW
1I
L44PM
13

U
S
A
FU
model
Canada

14
x
19
0
55
x
0
75

INSPECTION
AND
ADJUSTMENT

BATTERY

Type

Full

charging

specific
gravity
N50Z
NS70

1

26
1
28

EE
31

Engine
Electrical

System

IGNITION
COIL

Type
CIT

30
STC
30

Primary
resistance

at
200C
680F
U

0
84
to

1
02

Secondary
resistance

at
200C
680F
KU
8
2

to
12
4

SPARK

PLUG

BP5ES
ll

L46PW
ll

BP5EQ
13

L46PM
13

BPR5ES

BP4E
ll
L47PW
ll

BP4EQ
13

L47PM
13

BPR4ES

Type

BP6ES
I1

L44PW
I1

BP6EQ
13
L45PM
13
BPR6ES

BP7ES
II

L45PW
II
BP7EQ
13
L44PM

13
BPR7ES

Plug
gap
mm
in
1

0
to
1
1
1
1
to
1
3
0
8
to
0
9

0
039
to
0
043
0
043

to
0
051

0
031
to
0

035

TIGHTENING

TORQUE

Magnetic
switch
terminal

SI14
160B
S114
163E

S1l4
253
kg
em
in

Ib

Magnetic
switch
attaching
bolts

Starting
motor

Gear

case
attaching
bolts

Pulley
nut

Alternator

through
bolts

Spark
plug
kg
cm
in
Ib
75

to
100
65
to
87

115

to
160

100
to
139

38
to
51
3

to
44

kg
em
in

lb

kg
m
ft
Ib

kg
cm
in

Ib

kg
m
ft
Ib
64
to
85

56
to
74

4
5

to
6
0

33
to
43

60
to
70
52
to

61

1
5
to

2
5
II
to
18

EE
33

Engine
Electrical

System

TROUBLE

DIAGNOSES
AND

CORRECTIONS

I

BATTERY

Battery
is
not

charged
correctly

I

Correctly
adjust
belt
tension
of
alternator

2

Complete
connections
in

charging
system

3

Securely
connect

battery
terminals

Lighting
Joadtest

I
Make

sure
that

electrolyte
level
is
correct

2
Crank

engine
for

three
seconds
with

ignition
system
open

3
Turn
on

headlight
low
beam
for
one
minute

and
then
measure

specific

gravity
of

each
cell
of

battery

Specific
gravity
of
each
cell
is

less

than
1

200

N50Z
or
1

220

NS70

1
When

specific
gravity
can
not
be

raised
above
1

200

by
charging

the

battery
is
run
down
Specific
gravity
of

some
cells
is

above
1
200

N50Z
or
1

220

NS70
but
others

show
lower

specific
gravity

Unbalance
is
within

0
05

Discharged

battery
Charge
it

and

repeat

lighting
lood
test

Unbalance
is
within
0
05

Batter
is

satisfactory

EE
J4
Specific
gravity
of
each

cell
is

above

1

200

N50Z
or
1

220
NS70

Unbalance
of

specific
gravity
be

tween
cells
exceeds
0
05

I

Battery
is

run
down

Unbalance
of

specific
gravity
be

tween
cells
exceeds
0

05

I

Battery
is

run
down

Engine
Electrical

System

II
STARTING
MOTOR

Condition

Starting
motor
will

not

operate

Noisy

starting
motor

Starting
motor

cranks

lowly

Starting
motor

cranks

slowly

Starting
motor

operate
but
does

not
crank

engine

Starting
motor
will

not

disengage
even
if

ignition
switch
is

turned
off
Probable
cause

Discharged
battery

Damaged
solenoid
witch

Loose
connections

of
terminal

Damaged
field
coil

Damaged
brushes

Damaged
bearing

Damaged
annature

Loose

securing
bolt

Worn

pinion

gear

Poor
lubrication

Worn
commutator

Worn

brushes

Discharged
battery

Loose
connection
of
terminal

Worn

brushes

Locked
brushes

Loose
connections
of
terminal

Damaged
field
coil

Damaged
brushes

Damaged
bearing

Damaged
armature

Dirty
or
worn
commutator

Armature
rubs
field
coil

Damaged

splenoid
switch

Worn

pinion

Locked

pinion

guide

Worn

ring
gear

Damaged
sOlenoid

switch

Damaged

gear
teeth

EE
35
Corrective
action

Charge
or

repiace
battery

Repair
or

replace
solenoid
switch

Clean
and

tighten
terminal

Replace
yoke

Replace
brushes

Replace
bearing

Replace
armature

Tighten

Replace

Add
oil

Replace

Replace

Charge

Clean
and

tighten

Replace

Inspect
brush

pring
tension
or

repair
brush

holder

Clean
and

tighten
terminal

Replace
yoke

Replace
brushe

Replace
bearing

Replace
armature

Clean
and

repair

Repalce
assembly

Repair
or

replace

Replace

Repair

Replace

Repair
or

replace

Replace
damaged

gear

Engine
Electrical

System

IV
IGNITION
CIRCUIT

When

engine
does
not

start

If

there
is
no

problem
in
fuel

system

ignition
system
should
be

checked
This
can
be

easily
done

by

detaching
a

high
tension
cable
from

distributor

starting
engine
and
ob

serving
oondition
of

spark
that

occurs
between

high
tension
cable
and

engine

block
After

checking
this

repair
as

necessary
tery
and
anti
dieseliilg
wlenoid

valve
connector
to
cuI
off

supply

of
fuel
10

engine
Then
observe
the

condition
of

sparks
while
starter

motor
is
in

operation

Note
Turn

ignilion
switch
off
and

disconnect
ground
cable
from
bat

Condition
Location

Probable
cause
Corrective
action

No

spark
at
all
Distributor

Breakage
of
lead
wire
on
low
tension

side

Repair

Poor
insulation
of

cap
and
rotor
head

Replace

Open
pick
up
coil

Replace

Air

gap
wider
than

specification
Adjust

Ignition
coil
Wire

breakage
or
short
circuit

of
coil

Replace
with
new
one

High
tension
cable
Wire

coming
off

Repair

Faulty
insulation

Replace

IC

ignition
unit

Faulty
IC

ignition
unit

Replace

Breakage
of
circuit

Replace

Detached
connection

Repair

Spark
length
Spark
plugs
Spark
plug

gap
too

wide
Correct
or

replace

More
than
6

mm

Too

much
carbon
Clean
or

replace

0
24
in

Broken
neck

of
insulator
Replace

Expiration
of

plug
life

Replace

Distributor
Air

gap
too
wide

Correct

IC

ignition
unit

Faulty
IC

ignition
unit

Replace

Breakage
of
circuit

Replace

Detached
connection

Repair

EE
37