1979 DATSUN 210 heater

Body
Electrical

System

Incorrect

Overlapped
area
Hea

t
wire
STARTING
SYSTEM

For
automatic

transmission
models

REPLACEMENT
AND

INSPECTION
Break

points

Inhibitor
switch

Refer
to
Section
AT

BE542

Inhibitor

relay

See

Fig
BE
B

Fig
BE
55
Incorrect
and
Correct

Deposition
of
Silver
Composition

HEATER

CAUTION

Before

starting
to
work
on

any
part
of

electrical

system
disconnect

battery

ground
cable

DESCRIPTION
Air
lever

1

Off

CnID

p
lever
lEU
B
I
HUT

HDI
DEI

R
C
HUT

I
III

OFF
1
2
3

I

Fan

switch
lev
Outside
air
drawn
in

through
the

cowl

top
grille
is

directed

through
the

air

intake
case
to
the
heater
unit

by

the

blower
The
heater
unit

includes

an
air
mix

door
which
controls
the
air

temperature
and
a
ventilation
door

and
floor
door
which

change
the
distri

bution
of

air
flow
The
air

intake
door

inside
the
air
intake
case
shuts
out

the

outside
air
when
the
heater
is
off

The
heater
controls

consisting
of

three
levers
are
located
in

the
middle

portion
of
the
instrument

panel
They

are
the

AIR
lever
which
selects
the
air

inlet
and
outlet
the
TEMP
lever
which

controls
the

temperature
and
the

FAN

switch
lever
which

regulates
air
flow

with
the

blower

Side
defrosters
are

provided
on

models
bound
for

Europe
Heated
air

is

discharged
from
the
side
outlets
to

remove
side
window
frost
and
cloudi

ness
in

frigid
weather

for
better
side

view
Inside
air
To
defroster

fr

1

rf
To
side

r
2

t
defroster

1

U
C
D

i

LJ

t
@

6
5
Outside
air

1
Air
mix
door

2
Ventilation
door

3
Heater
core

4
Floor
door

5
Water
cock

6
Blower

7

Air
intake
door
To

Ooor

BE137D

Fig
BE
56
Heater
Control

BE
23

Body
Electrical

System

t

to

liP

1

ill

1
Center

V
t
fltilation
duct

2
Side
defroster
duct

3
Defroster

nozzle

4

Defroster
duct

5
Heater

unit
6

Heater
control

7
Water
cock

8
Water

inlet
hose

9
Water
outlet

hose

10
Air
con
duct

BEl38D

AIR

FLOW

VENTILATING
Fig
BE

57
Heater

Construction

I
Off

COlD

r
IUl

1
1
HUT

HOl
y

OIF
HEC
HEll

fll
OFl
l

2
3

J

Move
the
lever
to
the

desired
air
flow
i
To

center

Duwde
air

ventilator

J
U

V
D

ir
VENT

position

Move
the
lever

to
the

desired

temperature

BEl39D

Fig
BE

58

VentiIDting
Air
Flow

BE
24

REMOVAL
AND

INSTALLATION

HEATER
CONTROL

SEMBLY

I
Disconnect

battery

ground
cable

2
Pull
off

control
lever

knobs

3
Remove

cllJs
r

lid
A

4
Remove
defroster
ducts

5
Disconnect

door
control
cables

and
rod
at
each
door
Body
Electrical

System

6

Disconnectharness
tonnec1or

7
Remove
heater
control

assembly

with

bracket
from
instrument

panel
by

loosening
attaching
screw

8
Install
heater
control

assembly
in

the
reverse
order
of
removal
After

installing
heater
oontrol

assembly
oon

trol
cables
and
rod

must
be

adjusted

by

referring
to

Adjusting
Heater
Con

trol

HEATER
UNIT

I
Disconnect

battery
ground
cable

2

Drain

engine
coolant

3
Remove

package
tray
with

brack

et
if

equipped

4
Remove
console
box
if

equipped

5
Remove

cluster
lid
A

6
Remove

heater
control

assembly

7
Remove

radio
receiver

8
On
air
conditioner

equipped

models

disconnect
cooler
ducts
at

heater
unit

side

9
Remove

center
ventilator
duct

10

Disconnect
blower

motor
har

ness
connector

II

Disconnect
inlet

of
wat
r
cock

and
outlet

of
heater
core
hoses

by

loosening
hose

clamps

12

Remove
heater
unit

after
re

moving
heater
unit

retaining
bolts
To

air

intake
door

BE19
C

Fig
BE
63
Heater
Control
Assembly

13

Install
heater
unit
in

the
reverse

order
or
removal

rf

o

t

a

1
BE190C

Fig
BE
64

Removing
Heater
Unit

BLOWER
MOTOR

I

Disconnect

battery
ground
cable

2
Disconnect
blower
motor
harness

connector

BE

26
3

Remove
blower
moto
after

rti

moving
blower
motor

retaining
screws

4

Install
blower

motor
in

the
re

verse
order
of
removal

RESISTOR

I

Disconnect

battery
ground
cable

2
Disconnect
harness
connector

3
Remove
resistor

by

pulling
it

Note
Resistor

can
be
removed

iIy

by
prying
from
above
and
below

with

a
fbt
blade
screwdriver
with

resmor

slightly
raised
from
heater

unit

4

Install
resistor
in
the

reverse

order
of
removal

1
Remtor

2
Blower

3
BlOWer
motor

BE244D

Fig
BE
65

Removing
Blower
Motor

and
Resistor

WATER
COCK

I

Remove
heater
unit

2
Remove
water
cock

attaching

screw

3

Disconnect
hoses

by
loosening

hose

clamps

4
Install
water
cock
in

the
reverse

order
of
removal

IJi

Ir
c

r

I

BE192C

Fig
BE
66

Removing
Water
Cock

ADJUSTING
HEATER

CONTROL

AIR
MIX
DOOR

I

Set
TEMP
lever
at
maximum

HOT

position

2

Push
air
mix

door
lever
in

direc

tion
of

arrow
and

press

temperature

control
cable
outer
case
in
direction
of

TEMP
lever
While

doing
so
secure

outer
case
with

clip

BE252C

Fig
BE
67

Adjusting
Air
Mix
Door

Note
Make
sure
that
water
cock
is

fully
closed
when
TEMP
lever
is
in

maxilnum
COLD

position
Body
Electrical

System

VENTILATION
DOOR

I
Set
AIR

lever
at

RECIRC

posi

tion

2
Push
ventilation
door

relay
lever

in

direction
of
arrow

to
shut
out
air

flow
to
center
outlet
and

press
venti

lation
door
control
rod
into
relay
lever

clamp

BE253C

Fig
BE
68

Adjusting
Ventilation

Door

Note
Make
sure
that

ventilation
door

is

fully

open
when
AIR

lever
is
in

VENT

position

AIR
INTAKE
DOOR

Set
AIR
lever
at

OFF

position

2
Push
air
intake
door

lever
in

direction
of
arrow
to
shut

out
outside

air
flow
and

press
air
intake
door

control
cable
outer
case
in
direction
of

AIR
lever

While

doing
so
secure
outer

case
with

clip

BE255C

Fig
BE
69

Adjusting
Air
Intake

Door

BE

27
Note
Make

sure
that
air
intake

door

is

fully
open
outside
air
can

flow

into

air
intake
case
when
AIR
lever

is
in
VENT

position

FLOOR
DOOR

Set
AIR
lever
at

OFF

position

2

Push
floor
door
lever
in
direction

of

arrow
to
shut
out
air
flow

to
floor

and
defroster
and

press
floor
door

control
cable
outer
case
in
direction
of

AIR

lever
While

doing
so
secure
outer

case
with

clip

BE256C

Fig
BE
70

Adjusting
Floor
Door

Note
Make

sure
that
floor
door
is

fully

open
air
flows

to
floor
and

defroster
when
AIR
lever
is
in

HEAT

position

DISASSEMBLY
AND

ASSEMBLY
OF

HEATER
UNIT

Remove

heater
uni
t

2
Disconnect
heater
core
inlet
and

outlet
hoses

by

loosening
hose

clamps

3
Remove

clips
securing
front
and

rear
heater
cases
and

separate
them

4

Take
out
heater
core

5
Assemble
heater
unit
in
the

re

verse
order
of
removal

Body
Electdcal

System

INSPECTION

Check
the

following
items

if
blower

motor
fails
to
rotate

FUSE

To

check
for
burned
out
fuse
use

the

same

procedure
as
that
for
ordina

ry
fuses

with
a
circuit
tester
or

test

lamp

BLOWER
MOTOR

POWER

SUPPLY

Disconnect
blower
motor
harness

to
connect
main
harness

2

Connect
one
test

lamp
lead
wire
i

I
Heater
case

as
mbly

2
Heater

cote

BE193C

Fig
BE
71
Heater
Unit

to

main

harness
for
blower

motor
and

the
other
to

ground

3

Turn

ignition
switch
to
ACC

position
test

lamp
should

go
on

BLOWER
MOTOR

1

Disconnect
blower

motor
harness

to
connect
fan

switch
and

connect
the

harness
to

ground

2
Turn

ignition
switch
to
ACC

position
Blower

motor
should
rotate

FAN
SWITCH

Test

continuity
through
fan
switch

with

a
test

lamp
or

ohmmeter

BE
2B
OFF

1
2
3

I

1
0

01

2

I

3
0

I

4

01

BE766C

Fig
BE

72
Fan
Switch

RESISTOR

TItere

should
exist

continuity
be

tween
terminals
of
resistors

althouBh

values
of
resistors

are
different

HEATER
RELAY

For

heavy
duty
type

I
There

should
be

continuity
be

tween
terminals

D
and

@
but

not

between

@
and

@

2
There
should
be

continuity
be

tween
terminals

@
and

@
when

supplying
OC
12
volt

across
terminals

D
and@

I

@

I

I

j

i

i

@

fc

4@

j

I
V

AC197A

Fig
BE
73
Heater

Relay

WIPER
MOTOR

WINDSHIELD
WASHER
MOTOR

REAR
WIPER
MOTOR

REAR
WINDOW
WASHER
MOTOR

m
w
o
HORN

CIGARETTE
LIGHTER

CLOCK

HAZARD
FLASHER
LAMP

STOP
LAMP

ROOM
LAMP

LUGGAGE
ROOM
LAMP

TAIL
LAMP

CLEARANCE
LAMP

LICENSE
PLATE
LAMP

COMBINATION
METER
LAMP

l
I
ll
6
C
l
ii
en

g
0

o
m

till
oill
l
I
t1
l

CO
l
m
l
m
0
z

t

15A
10A

14
fA
20A

16

T
r

t1
l
t1
l

CO
CO

CJ
CJ

1
1

m
m

0
0

z
z
HEATER
lAIR
CONDITIONER

ENGINE
REVOLUTION
SWITCH

FUEL
CUT
SOLENOID

VACUUM
CUT
SOLENOID

AUTO
CHOKE
HEATER

THROTTLE
OPENER
SOLENOID

TURN
SIGNAL
LAMP

GAUGE
I
FUEL

L
WATER
TEMPERATURE

WARNING
LAMP

BRAKE

CHARGE
OIL
PRESSURE

SEAT
BELT

WARNING
BUZZER

BACK
UP
LAMP

KICKDOWN
SOLENOID

TACHOMETER
REAR
DEFOGGER
f

c
It
1
1
m
g
II
n
a
n
c
It
c
1J

c
CIl

z
G
S
3
OJ
o
Cl
m
CD

In
Ql

m
W
w
t
e
CALIFORNIA
ANO

BATTERY
FU
MOOELS

g
G
II
V

FUSIBLE
LINK

G
uQ
t
WR

NON
cALlFORNIA

ANO
CANAOA
MOOELS

FUSE
BLOCK

ii
I
ll
l
er
0
er

15A

RG
r
I

W
I
0

0
0
0

tl

ij
a
3

Cl
E
0
too
m

a
f
0
II
OFf
I
IST
2ND
I

IAIBICIAIBlc
liB
C

1
I
101
1
10
10
0
5

11101
116
OI66

I
I
I
I
I
I
6
1
0

I
H
I
101010
2
2
12
8

1161616
LIGHTING
SWITCH
rtt
I

Q
l
B
B

I
I
I

8
00

100
2
2
GW

G
y
jl
I
I
g

fi
GY

GY
Ot

I
GW

RG
GW
T
R
cON

INOICATOR
LAMP
IA
TI
r
H

Jl
L
t1
j

GW
RAOIO
ILLUMINATION
LAMP

IrGW
GI

to
GY
r
l

I
3
I

L
HEATER
CONTROL

PANEL
ILLUMINATION

LAMP

I
GWCJ
lOr

GYO
c
I
ASH
TRAY
ILLUMINATION

CJ
LAMP
CLOCK

H
Gya
3
C3
L
INATION

G
J
J

Y
l

B
I
ILLUMINATION

I
CONTROL
UNIT

G
W

INSTRUMENT
HARNESS
COMBINATION
LAMP
r
r
e
i
o
z
lI
OJ

o
Cl
m
CD

0
Ql
CIl

en
l
3

m
ii
I
ll

ic

i
tl

Cl
Ul

0
is
B
w
ii
W

oa

LW
L

CALIFORNIA
ANO
I

d
S
R

FUSIBLE
LINK

o
BATTERY
S

JSt
wGLQ
gWR

NON
GALIFORNIA

ANO
CANAOA
MOOELS

LOC
Off
Ace
ON
Sf

o
0
i

IGNITION
SWITCH
L
B
LN

I
15A

0
0

0
0
o
v
E

FUSE
BLOCK
M
F
i

L
11L1
u

R
1
i
ri
1

w
RESISTOR

BW
Il

BLj

L
lljlj
U6
1

BWY

W

B
8
HEAVY
OUTY
TYPE

Standard
for
Canada
and

option
for
U
S
A
LW
HEATER
MOtOR

IOffl
I
2
3

Kro

lli
H

FAN
SWITCH

ST
ANOARO
TYPE
Z
II
II
a
OJ

o
Cl

m
CD

n
n
Ql

CIl
CJ

l
3