1979 DATSUN 210 Release

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

Air

Conditioning

RECEIVER
DRIER

The
receiver

drier
rves
the

pur

pose
of

storing
tl
e

liquid
refrigerant

The
amount

of
the

liquid
refrigerant

flowing
through
the

system
varies

with

the

operating
condition
of
the
air

conditioner
To
be

accurate
the

receiver

drier
stores
excess
amount

of

refrigerant
when
the

heat
load
is

low

ered
It
also
releases

stored

refrigerant

when
additional

cooling
is
needed

thus

maintaining
the

optimum
flow
of

refrigerant
within
the

system

The
receiver

drier
includes
a
strain

er

and
desiccant

They
have
the

job
of

removing
moisture
and

foreign
parti

cles
as
the

refrigerant
circulates
within

the

system

The

pressure
relief
valve
is

installed

beside

the

sight
glass
of
the
receiver

drier

The

purpose
of
the
valve
is

to

release

preSsurized

refrigerant
vapor

into

the

atmosphere
in

the
event
of

excessive

pressure
build

up
in

the

high

pressure
line

The

pressure
relief

valve

opens

automatically
at
a

pressure
of
about

38

kg
cm2
540

psi

EXPANSION
VALVE

The

expansion
valve
restricts
the

flow
of

liquid
refrigerant
as
it

passes

through
it
and

delivers

sprayed
refrig

erant
to
the

evaporator
for

faCilitating

refrigerant

evaporation

The

refrigerani
within

the

sensing

bulb

changes
in

pressure

through
the

super
heat
condit
ion

of

vaporized
re

frigerant
gas
which
comes

out
of

the

evaporator
causing
the

deflection
of

the

diaphragm
The
lift
of
the
ball

valve

attached
to
the

diaphragm
is

changed
by
the
deflection
of

the
dia

phragm
thus

controlling
the

amount

of

refrigerant
passing
the

orifice

AC
4
To

expansion

valve

rl
From
condenser

L
J

C
d

f

@

J

f

J
4
4

1

u

lc

AC167A

1

Pressure
relief
valve

2

Sight
glass

3
Suainer

4
Desiccant

Fig
AC
3
Receiver
Drier

JD

v
t

I

Sensing
bulb

2

Diaphragm

3

Eq
ualizer
line
From
receiver
drier

4

Orifice

5
Valve
ball
To
evaporator

Fig
A
C
4

Expansion
Valve
AC423

for
Leaks
Here
is

how
leaks

are

stopped

I

Check

torque
on

the
connection

fitting
and
if
too
loose

tighten
to
the

proper
lorque
Check
for

gas
leakage

with
a
leak
detector
Air

Conditioning

2
If

leakage
continues

ven
after

the

fitting
has
been

retightened
dis

charge
refrigerant
from

system
disc
on

net

the

fittings
and

check
its

seating

face

for

damage

Always
replace
even

if

damage
is

slight
J

Check

compressor
6il

and
add
oil

if

required

4

Charge

refrigerant
and
recheck

for

gas
leaks

If

no
leaks
are
found

evacuate

and

charge
system

SERVICE
PROCEDURES

FAST
IDLE

ACTUATOR

ADJUSTMENT
OF

IDLE
SPEED

Engine
model

Transmission
When

A
C
is
OFF
When
A
C
is
ON

F

LCD
is

actuated

Manual

700

rpm
800

rpm

A14
A15

Automatic
650

rpm
800

rpm

at
D

position
at
N

position

The
fast
idle

control
device
is
used

on

cars

equipped
with

an
air

condi

tioner
to
raise
the

idle

speed
auto

matically

Use
the

following
procedures
when

adjusting

1
Run

engine
until
it

reaches

oper

ating

temperature

2

With
air
conditioner
in

OFF

when

compressor
is
not

operated

make

sure
that

clearance
e
between

levers
A
and

8
is

more
than

J
mm

0
12
in

If
clearance
C
is

less
than

J

mm
0
12
in

loosen
cable
lock

screw
and

push
down

on
lever
A

so

that
clearance
C
is

more
than
J
mm

0
12
in

3
Make
sure

that

engine
is
at
cor

rect
idle

speed

4

With
air

conditioner
in

ON
when

F

LC
D
is
actuated

set

engine
speed

to
800

rpm
using

following
procedures

as
a

guide

I
Turn

adjusting
screw
until
en

gine
speed
is
800

rpm

On
cars

equipped
with
automatic

transmission

make
this

adjustment

with
shift
control
lever
in

N

posi

tion
2
If

engine
speed
cannot
be

adjust

ed

properly
with

adjusting
screw

check
and

adjust
clearance
e

again

3

Depress
and
release
accelerator

pedal
several
times
and
make

sure
that

engine

speed
reduces
to
800

rpm
as

pedal
is

released

If
correct

adjustment
is
not
made

repeat

steps
I
to
3
above
until

engine
speed
is

800

rpm
at

idling

1

FlCD

adjusting
screw

2
Lever
A

3
Lever
B

4

Cable
lo
k

screw
Clearance

e

AC381
A

Fig
AC
24
Fast
Idle
Actuotor

AC
18
REMOVAL
AND

INSTALLATION

Remove

vacuum
hose
from
actua

tor

2

Remove
air

cleaner

assembly

3

Remove
cotter

pin
and

pin
and

disconnect

actuator
from
F

LC
D

lever
connected

to
throttle
shaft

4

Remove

actuator

attaching
nuts

then
remove
actuator

5
Install

actuator
in

the
reverse

order
of
removal

6
After

installing
adjust
actuator

Refer
to

Adjustment
of

Idle

Speed