1979 DATSUN 210 relay

Body
Electrical

Sy
tem

Oil

pr
re
charg
and
brake

warillng

Condition

Lamp
does
not

glow

when

ignition
switch

is

turned
ON
with

out

running
engine

Door
and

charge

warning
lamps
do
not

go
out
when

engine
is

started

Charge
waming
amp

Lamp
does
not

go
out

when

engine
is
started

Oil

pressure
warning

lamp

Lamp
does
not

light

when

ignition
switch

is

set
to

ON

Lamp
does
not

go
out

while

engine
is

being

operated

Brake

warning
lamp

Lamp
does
not

go
out

Door

warning
lamp

Lamp
does
not

glow

with
door

opened
and

engine
running
Probable
cause

Burnt
bulb
or

loo
ebulb

Loose
or

poor
connection

Faully
bulb
check

relay
or
alternator

Faully
charging
system

Faully
oil

pressure
switch

or
loose

switch

terminal
connection

When
lead
wire
connected
to

switch
is

grounded
warning
lamp
lights

Lack
of

engine
oil

Oil

pressure
too
low

Faully
oil

pressure
switch

Faulty
hand
brake

switch

When
hand
brake

lever
is

released

Faully
brake

fluid
level
switch

When
brake

fluid
level
is
normal

Faully
door

switch

BE
46
Corrective
action

Replace
bulb
or
correct

Correct

connector
terminal

contacts

Correct

adjust
or

replace

Inspect
charging
system

Replace
or

correct
connection

Check
oil
level
and
add
oil

as

required

Inspect
engine
oil

pressure
system

Replace

Replace

Replace

Replace

Body
Electrical

System

Condition
Windshield

wiper
and
washer

Probable
cause

Windshield
Motor

wiper
does
not

operate

Windshield

wiper
operat

ing
speed
is

too
slow
Power

supply
and

cable

Switch

Link

Motor

Power

supply
and

cable

Link

Switch

Windshield
Motor

wiper
speed
can

not
be

adjusted

correctly

o

o

fi
5

2

0

E

0

0
Stops

any

where

Does

not

stop

Washer
motor

does
not

operate

when

pushing

washer
switch
on

Washer
motor

operate
bu

t

washer
fluid
is

not

ejected
Motor

Motor
Broken
armature
worn
motor
brush
or

seized
m
tor
shaft

Blown
fuse

Loose

open
or
broken

wiring

Improper
grounding

Improper
switch
contact

Foreign
material

interrupts
movement
of

link
mechanism

Disconnect
link
rod

Seized
or
rusted

arm
shaft

Short
circuit

of
motor
armature
worn

motor
brush

or
seized
motor
snaft

Low

source
voltage

Humming
occurs
on
motor
in
arm

operat

infcycle
due

to
seized

arm
shaft

Improper
switch
contact

Motor

brush
for
either

low
or

high
speed

is
worn

Contaminated
auto

stop
relay
contacts
or

improper
contact
due
to

foreign
matter

Incomplete
auto

stop
operation
Contact

is
not

interrupted

Burnt

fuse

Faulty
switch

Faulty
washer

motor

Loosen
or

poor
connection
contact
at

motor

or
switch

logged
washer
nozzle

BE
53
Corrective
action

Replace
motor

Checkshort
circuit
burnt

component
in

side
motor
or
other

part
for

operation

and
corr
ct

problem

Correct

Correct

I

t

Correct

Correct

Correct

Lubricate
or

replace
arm
shaft

Replace
motor

or
lubricate

bearing
with

engine
oil

Measure

voltage
check
other
electrical

parts
for

operation
and
take
corrective

action

for

power
supply
if

necessary

Lubricate
or

replace

Conduct

continuity
test
and

replace
if

necessary

Replace
motor

Remove

auto

stop
device
cover
and
clean

contacts
carefully
so
as
not
to
deform

relay
plate

Remove
auto

stop
device
cover
and
cor

rect

relay
plate
bending

Correct
cause
and
replace
fuse

Replace

Replace

Repair

Clean
nozzle
or

replace

I

Horn

Condition

Neither

high
nor
low

horn

operates

High
Low

horn

does
not

operate

Horn
does
not

stop

to
sound

Reduced
volume
and

or

tone

quality
Body
Electrical

System

Probable

cause

Burnt

fuse

Faulty
horn

button
contact

Horn
sounds
when

@
terminal
of

inst

harness
connector
to

combination
switch
is

grounded

Faulty
horn

relay

Horn

sounds
when

CD
and

ID
terminals

of

engine
harness
to
horn

relay
are
connected

with
a

test
lead

including
15A

fuse

Lo
se

conn
ection

or

open
circuit

Faulty
horn
or
loose
horn

terminal
connee

tion

Break
in
wire

to
horn

Short
circuited
horn
button
and

or
horn

button
lead
wire

When
inst

harness
is

disconnected
from

combination
switch
horn

stops
sounding

Faulty
horn

relay

Loose

or

poor
connector
contact

Fuse

relay
horn
and
or

horn
button

Faulty
horn
Corrective
action

Correct
cause
and

repbce
fuse

Repair
horn

button

Replace

Check

wiring
and

or

repair
connection

Correct
horn
terminal
connection
or

replace

horn

Repair

Repair
horn
button
or
its

wiring

Replace

Repair

Replace

Radio

Noise

prevention
chart

Position
car
in
an

open
area

away
from

steel

buildings
run

engine
extend
antenna

to
its

maximum

length
set
volume

control
to
maximum
and
set

dial
at
a

median

point
where
no

broadcasting
wave
is

received

Condition

Probable

cause

Ignition
system

Noise
o
curs
when

engine
is

operated
High
tension

cable

Ignition
coil

Charging
system

Sound
of

alterilating
current

present
Alternator

When
accelerator

pedal
is

depressed
or

released

noise
occurs
Voltage
regulator

BE

54
Corrective
action

Install
new

high
tension

cable

Replace
O

5
lF
capacitor
installed
to

primary
side

terminal
of

ignition
coil
with

ne
ones

Note
Be
careful

not
to
install

capacitor
to
see

ondary
or

primary
breaker
side
This
will

result

in

improper
engine
operation

Replace
O
5

lF
capacitor
installed
to

charging
ter

minalA

Note
Do

not
use
a

larger
capacitor

Install
a
O
5

lF

capacitor
to

IGN
terminal

of

voltage
regulator

DATSUN

210
Model

8310
Series

SECTIONAC

AIR
CONDITIONING

CONTENTS

DESCRIPTION

OUTLINE
OF
AIR
CONDITIONER

REFRIGERATION
SYSTEM

AIR
FLOW

VACUUM
SYSTEM

ELECTRICAL
CIRCUIT

GENERAL
SERVICE

REFRIGERANT
R
12

COMPRESSOR
OIL

MAINTENANCE

GENERAL
SERVICE
INSTRUCTIONS

SAFETY
PRECAUTIONS

EVACUATING
AND

CHARGING
SYSTEM

CHECKI
NG
FOR
LEAKS

REFRIGERANT
LEVEL
CHECK

COMPRESSOR
OIL
LEVEL
OHECK

PERFORMANCE
TEST

REFRIGERANT

LEAKS

SERVICE
PROCEDURES

FAST
IDLE
ACTUATOR

IDL
E
PULLEY
AND
COMPRESSOR

DRIVE
BELT

COMPR
ESSOR

CONDENSER

RECEIV
ER

DRIER

REFRIGERANT
LINES
I

COOLING
UNIT

EXPANSION
VALVE

THERMOSTAT

MAIN
RELAY

HEATER
UNIT

WATER
COCK
AC
2

AC
2

AC
3

AC
5

AC
6

AC
7

AC
9

AC
9

AC
9

AC
9

AC
9

AC
9

AC

1

AC14

AC15

AC
17

AC17

AC17

AC18

AC1B

AC19

AC19

AC
20

AC
20

AC
21

ACc21

AC
22

AC
22

AC
23

AC
23

AC
23
BLOWER
MOTOR

RESISTOR

AIR
CONDITIONER

CONTROL

FAN
SWITCH

MICROSWITCH

LOW
PRESSURE
SWITCH

MAGNET
VALVE

FUSE

REPLACEMENT

VACUUM
HOSE
DIAGRAM

WIRING
DIAGRAM

COMPRESSOR
MODEL
SC206

PRELIMINARY
CLEANING

COMPRESSOR
CLUTCH

SHAFT
SEAL

CYLINDER
HEAD

AND
VALVE
PLATE

DISCHARGE
AND
sU
CTiON

CONNECTORS

TROUBLE
DIAGNOSES
AND

CORRECTIONS

AIR

CONDITIONER
DIAGNOSES

BLOWER
MOTOR
DIAGNOSES

COMPRESSOR
DIAGNOSES

COMPRESSOR
CLUTCH
DIAGNOSES

VACUUM
SYSTEM
DIAGNOSES

PERFORMANCE
TEST

DIAGNOSES

PERFORMANCE
CHART

SERVICE
DATA
AND

SPECIFICATIONS

GENERAL
SPECIFICATIONS

INSPECTION
AND
ADJUSTMENT

TIGHTENING
TORQUE

SPECIAL
SERVICE
TOOLS
AC
23

AC
23

AC
23

AC
23

AC23

AC
24

AC
24

AC24

AC
24

AC
25

AC
26

AC
27

AC
27

AC
28

AC30

AC30

AC32

AC
32

AC
33

AC34

AC35

AC36

AC37

AC
41

AC
42

AC
42

AC
42

AC
43

AC
44

Air

Conditioning

4

1
Control
wire

2
Control
rod

3
Intake
actuator

4
Vacuum

switch

5

Check
valve

6
Intake

return

spring

7
Intake
door

AC268A

Fig
AC
9
Intake
Actuator

AC
7
ELECTRICAL
CIRCUIT

DESCRIPTION

The

following
wiring

diagram
pro

vides
a

complete
description
of
the

whole

circuit
When

both
the

ignition

switch
and
fan

switch
are
tu
ned
on

the
main

relay
is

actuated
and

electric

power
is

supplied
to
the

blower
motor

and
electric
clutch
of
the

compressor

The
blower
motor

speed
is
controlled

by
the

fan
switch

with
the

aid
of

resistors
The

compressor
clutch
is

actuated

by
the

thermostat
A

fuse
is

part
of
the
air

conditioner
harness

Air

Conditioning

Ale
position

Main

relay

Blower

motor

Fan
switch

Fusible

r
link

o
c

Fuse

This

fuse
is
built

into
air

con
harnes
s
I

L
RW
B
5
d

2nd

I
I
olst

Resistor
1

Battery
Ignition
Fuse

1
switch

Micro
switch

Low

pressure
switch

0

Thermost

T
I

CompreSsor

clutch

roo
h

Magnet
valve

AC269A

VENT
8

L
HEAT
DEF
and
REC
HEAT

position

Main

relay

Blower
motor

Fusible

1
link

0
O
C

Fuse

This
fuse
is
built

into
air
coil
harness
RW
o
Fan
switch

Ignition

switch
r
o

Fuse
5
d

2nd

olsl

I

Resistor

0
1

Micro
switch

j

Battery

Low

pressure
switch

0

J

The
most

T
tr
r

I

Compressor

clutch

Magnet
valve

AC270A

Fig
AC
IO
Electrical
Circuit

Ac
a

REFRIGERANT
LINES
Air

Conditioning

@

I

J

L

S

r
Z
S
t

@

See

Fig
AC
29
When

replacing

flexible
hose
and
tube
observe
the

following

1

Before

starting
work
be

sure
to

discharge
system

2

When

disconnecting
tubes
be

sure
to

use
two

wrenches
on
both

tubes

3

After
discon

ecting
tubes

plug

all

openings
immediately
to

prevent

entrance
of
dirt
and
moisture

4

Compressed
air
must
never
be

used
to
clean

dirty
line
Clean
with

refrigerant

gas

5
In

connecting
tubes
be
sure
to

apply
compressor
oil
to

seating
surface

and
then

tighten
tubes
to

specified

tightening
torque
See

Fig
AC
30

Be

sure
to
use
two
wrenches
when

tightening
a
flare

nut
of
tube

Coat
seat
surfaces
with
com

pressor
oil
and
then

tighten

AC263

Fig
AC

30
Line
Connection
CD

6
Make
sure

refrigerant
line
is

clamped
securely
Start

engine
and

raise

engine
speed
to

inspect
if
there
is

vibration
or
unusual
noise

7

Conduct
leak
t
st
and
make
su
e

that
there
is
no
leak

from
connections

8
Refer
to

General
Service
for

evacuating
and

charging
system

COOLING
UNIT

REMOVAL

I

Disconnect

battery
ground
cable

2

Discharge

refrigerant
from

sys

tern
Refer
to
General
Service

3
Loosen

flare
nuts
at
each
con

nection
of
inlet

and
outlet

pipes
of

evaporator

AC
21
1

High
pressure
discharge
service

valve

2
Low

pressure
suction
service
valve

3

Compressor

4

Condenser

5
Receiver

drier

6

Cooling
unit

7

Low

pressure
switch

lightening
torque

kg
m
ft
lb

@
4

5
to

5
0
33
to
36

@
3
0
to
3
5
22
to
25

AC385A

Fig
AC
29

Refrigerant
Lines

CAUTION

Immediatelv
plug
up
all

openings

to

prevent
entrance
of

dirt
and

moisture

4
Remove
instrument
under

cover

5
Remove

glove
box

6
Disconnect

wiring
harness

con

nectors
from

compressor
relay
and

thermostat

7
Remove

upper
and
lower

attach

ing
bolts
and

remove

cooling
unit

AC386A

Fig
AC
31
Removing
Cooling
Unit

to

DISASSEMBLY

AND
ASSEMBLY

y
1

7
1
r

II

l

1

Using
a
knife
cut

packings
at

upper
and
lower
case
fit
in

portion

2
Remove

clips
fixing
upper
case
to

lower

case

3

Separate
upper
case
from
lower

case

by

pulling
it

upward

4
Withdraw

evaporator
assembly

out
oflower
case

5
Remove
thermostat
from

upper

case

by
removing

attaching
screWs

CAUTION

Capillary
tube
should
not
be
bent

too

sharply

6
To
assemble
reverse
the

order
of

disassembly
Be

sure
to

join
mating

surfaces
of

packings
at

upper
and

lower
case
fit
in

portion
with
an
adhe

sive

substance

Note

When

installing
thermostat

in

sert

capillary
tube
in
same

place
as

it

was
before
removal
Be
sure
to

insert

capillary
tube
end
about

50

em
19
7

in
from

evaporator
core

INSPECT

ON

In

case

evaporator
core
or

expan

sion

valve
have

gas

leaking
repair
or

replace
it
with

a
new
one
as

necessary

Dirt
and

nicotine
accumulation

on

evaporator
case
will

go
b
d
and
smell
Air

Conditioning

1

Mainrelay

2

Thermostat

3

Upper
case

4

Expansion
valve

5

Evaporator
assembly

6

Lower
case

ID

AC387A

Fig
AC
32

Cooling
Unit

This
means
that

you
have
to

remove

them
from
time

to
time
to
assure

healthful
fresh
air
inside

car

INSTAllATION

Install

evaporator
in
the
reverse

order

of
removal

observing
the
follow

ing

I
When

replacing

evaporator
with

new

one

charge
compressor
with

same
amount
of
new
oil
as
was
drained

before

2

Evaporator
case
should

be
in

stalled
as

close
s

possible
to

heater

unit

3
Refer
to

Fig
AC
29
for

tighten

ing

torque
of
flare
nuts

4
Refer
to
General
Service

for

evacuating
and

charging
system

5
Conduct
leak
test
and
ensu
e

that

there
is

no

gas
leak
from
conne
tion

EXPANSION
VALVE

Expansion
valve
malfunctions
such

as
valve

stuck

open
valve
stuck

close

refrigerant
leakage
and

improper
in

stall
tion

of

sensing
bulb
are
de

scribed

The
first
two
conditions

require

replacement
of

expansion
valve

When
both
water

and

refrigerant

AC

22
are
circulated

in
the

system
frost
cwill

form

near
the
ball
of

expansion
alve

and

block
the
flow
of

refrigerant
In

this
case

however

operation
of
the

valve

can
be
returned
to

normal

by

heating
the
valve

Expansion
valve
is

equipped
with

an

adjusting
screw
However
since

the

screw
is
set

properly
at

the

factory

adjustment
is

unnecessary
If

expan

sion

valve
is

damaged

replace
with

new
one

RIEMOV
L
AND

INSTALlATION

See

Fig
AC
32

Disconnect

baltery
ground
cable

2
Remove
ev

porator
Refer
to

Cooling
Unit
for

removal

3

Remove
heat
insulator

covering

expansion
valve

assembly

4
Remove

clamp
attaching
sensing

bulb

5

Loosen
flare
nuts
and
remove

expansion
valve
from

evaporator
and

inlet

pipe

CAUTION

Plug
all

openings
to

prevent
entrance

of
dirt
and
moisture

6

Installation
is
ill
the
reverse
order

of

removal

THERMOSTAT

REMOVAL
AND

INSTALlATION

See

Fig
AC
32

Remove

cooling
unit

2
Remove

screws

attaching
thenno

stat
and
then

remove
thermostat

CAUTION

Capillary
tube
should
not
be
bent

too

sharply

3
Installation
is
in

the
reverse
order

of
removal