1977 DATSUN PICK-UP check engine

REMOVAL
AND

INSTALLATION

I

Remove
hood
lock
male

by
re

moving
two

attaching
bolts

2
To
remove
hood
lock
female
first

remove
radiator

grille
Back
off
two

bolts

securing
hood
lock
female

in

position
Hood
lock
female

can
now

be
taken
out

3
Remove

two
bolts

attaching
hood

lock
handle

assembly
to
dash
side

paneL

Disconnect
cable
at
hood
lock

female
and
remove
cable

clamps
Pull

cable
out
into

cab

4

To
install
hood
lock
male
and

female
reverse
removal

procedure

Mter
installation
check
to
insure
that

they
are

properly
aligned

5
To

install
hood
lock
handle

as

sembly
reverse

steps
observing
the

following
notes

I
Check
to
be
certain
that

cable

clamps
are

tight
and
secure

2
Install
hood
lock
handle
bracket

in

place
by

using
two
of
four
holes

See

Figure
BF
19
Body
Frame

@

1

Hood
tock
handle

2

Hood
lock
handle

bracket
BF645A

3

Clamp

4

Hole

5

Attaching
bolt

Fig
BF

19

1MtalIing
hood
lock
handle

brocket

ADJUSTMENT
AND

INSPECTION

I
If
hood
lock
handle

is

heavy
turn

dove
tail
bolt
of
hood
lock
male
coun

terclockwise
to
reduce
tension
of

hood

lock

spring

Lock
nut
of
dove
tail
bolt
should

fust
be
loosened

If
looseness
is
noticed
hood
is

not

tight
and
will
vibrate
To
correct
this

turn
bolt
clockwise
and
recheck

2
Check
hood
lock
mechanism
as

follows

BF
10
I
Check

safety
catch

lever
and

spring
for
deformation

fatigue
or

rusting

2
Check

female
lever
and

return

spring
for
deformation

fatigue
or
rust

ing

Improper
operation
of
female

lever

may
cause

disengagement
be

tween
female
lever

and
dove
tail
bolt

3
Make
sure
that

safety
catch

hooks

engine
hood

properly
when

hood
latch
has
been

disengaged

0l

11
mm

I
nun
BF409A

0
433
in

0
3t5
in

Fig
BF
20

Safety
catch
lever
to

radiator

upper

support

acVu5tment

Lubrication

When

checking
or

adjusting
the

hood

lock
lubricate
the

pivot
catcher

and

return

spring
of

secondary
latch

thoroughly
Also
lubricate
the
lever
of

the
hood
lock
female
for

smooth
and

correct

operation

A
melted
fusible
link
can
be
de

tected
either

by
visual

inspection
or

by

feeling
with

finger
tip
If
its
condition

is

questionable
use
circuit
tester
or

test

lamp
as

required
to
conduct

continuity
test
This

continuity
test

can
be

performed
in
the
same
manner

as
for

any
conventional
fuse
Body
Electrical

System

Notes

a
If
fusible

link
should

melt
it
is

possible
that
critical
circuit

power

supply
or

large
current

carrying

circuit

is
shorted
In
such
a

case

carefully
check
and
eliminate
cause

of

problem

b
Never

wrap

periphery
of
fusible

link
with

vinyl

tape
Extreme
care

should
be
taken
with
this
link
to

ensure
that
it

does
not
come

into

contact
with

any
other

wiring
har

ness
or

vinyl
or
rubber

parts
c

BEB49A

Fig
BE
2
Fusible
link

LIGHTING
AND
SIGNAL
LAMP
SYSTEM

DESCRIPTION

LIGHTING

SYSTEM
CIRCUIT
DIAGRAM

HEADLAMP

HEAD
LAMP
BEAM
REPLACEMENT

AIMING
ADJUSTMENT

FRONT
COMBINATION
LAMP

BUL8
REPLACEMENT

REMOVAL
AND
INSTALLATION

SIDE
MARKER
LAMP

BUL8
REPLACEMENT

REMOVAL
AND
INSTALLATION

ROOM
LAMP

BULB
REPLACEMENT

REMOVAL
AND

INSTALLATION

REAR

COMBINATION
LAMP

BULB
REPLACEMENT

REMOVAL
AND

INSTALLATION

LICENSE
LAMP

BULB

REPLACEMENT

REMOVAL
AND

INSTALLATION

ENGINE
COMPARTMENT
LAMP

LIGHTING
SWITCH

REMOVAL
AND

INSTALLATION

INSPECTION

ILLUMINATION
CONTROL
RHEOSTAT

REMOVAL
AND
INSTALLATION
CONTENTS

BE
4

BE
4

BE
5

BE
5

BE
5

8E
7

BE
7

BE
7

8E
7

BE
7

8E
7

BE
8

BE
B

8E
8

BE
8

8E
8

8E
8

8E
8

BE
8

8E
8

BE
9

BE
9

BE
9

8E
9

8E
9

8E
9
INSPECTION

KN08
ILLUMINATION
LAMP

BULB
REPLACEMENT

LAMP
BODY
REPLACEMENT

TURN
SIGNAL
AND
DIMMER
SWITCH

REMOVAL
AND
INSTALLATION

INSPECTION

STOP
LAMP
SWITCH

REMOVAL
AND
INSTALLATION

INSPECTION

DOOR
SWITCH

REMOVAL
AND
INSTALLATION

INSPECTION

HAZARD

SWITCH

REMOVAL
AND

INSTALLATION

INSPECTION

FLASHER

UNIT

REPLACEMENT

8ULB

SPECIFICATIONS

TROUBLE
DIAGNOSES
AND

CORRECTIONS

HEAD
LAMP

TURN
SIGNAL
LAMP

TAIL
LAMP
STOP

LAMP
AND

BACK
UP
LAMP

BE
3
1

BE
9

BE
10

BE
10

BE10

BE
10

BE
10

BE
10

BE
10

BE
10

BE
10

BE
10

BE
10

BE
11

BE
11

BE
11

BE
11

8E
11

BE
11

BE
12

BE
12

BE
12

BE
13

8E
13

Body
Electrical

System

BULB
SPECIFICATIONS

Item

Wattage

Candlepower

Headlamp
Inner

Outer
37
5W

37
5
S0W

Front
combination

lamp

Turn

signal
and

parking
lamp
23
8W
32
3C

Side
marker

lamp

Front

Rear
8W

4C

8W
4C

Rear

combination
lamp

Turn

signal
lamp
A
B

Tail

lamp
B
C

Stop
lamp
A
B

Back

up
lamp
D
A
23W
32C

B
23j8W

32j3C

C
8W
4C

D
23W

32C

7
SW

6C

License

plate
lamp

Engine
compartment
lamp
6W

Room

lamp
5W

Combination
meter
illurnina

tion
17W
iC
x3

Knob
illumination

lamp
3
4W

2C

Heater

control
illumination

lamp
3
4W

2C

TROUBLEDIAGNOSE
AND
CORRECTIONS

HEADLAMP

Condition

Headlarnps
do
not

light
for

both

high
and
low
beams

High
beam
cannot

be
switched
to
low

beam
or
vice
versa
Probable
cause

Burnt
fuse

Loose
connection
or

open
circuit

Faulty
lighting
switch

Faulty
dimmer
switch

Faulty
light
relay

No

ground

Faulty
dimmer
switch

Faulty
light
relay

BE12
Bulb

SAE
trade
number

4001

4002

1034

67

67

1073

1034

67

1073

89

161

158

158

Corrective
action

Correct
cause
and

replace
fuse

Check

wiring
and
or

repair
connection

Conduct

continuity
test
and

replace
if
neces

sary

Check

light
relay
for

proper
operation
and

replace
if

necessary

Clean
and

tighten
ground
terminal

Conduct

continuity
test
and

replace
if
neces

sary

Check

light
relay
for

proper
operation
and

replace
if

necessary

Condition

Fuel

gauge

Fuel

gauge
does
not

operate

Pointer
indicates
only

F

position
Body
Electrical

System

Probable
cause

Faulty
tank
unit
or
loose
unit

terminal

connection

pointer
indicates
a
half
level
when
a
35U

resistance
is
connected
between
tank
unit

yellow
wire

and

ground

Faulty
fuel

gauge

Poor

or
loose
cormection

Open
circuit

Faulty
tank
unit

pointer
lowers
below
E

mark
when

igni

tion
switch
Is
turned

off

Faulty
fuel

gauge

pointer
still
indicates
F

position
when

ignition
switch
is
turned
off

OIL
P

RESSURE
AND
CHARGE
WARNING
LAMPS

Condition

Oil

pressure
wamiug

lamp

Lamp
does
not

light

when

ignition
switch
is

set
to
ON

Lamp
does
not

go
out

while

engine
is

being

operated

OIarge
warning
lamp

Lamp
does
not

light

when

ignition
switch
is

set

to
ON

Lamp
does
not

go
out

when

engine
is
started
Probable
cause

Inoperative
oil

pressure
switch
or
loose

switch
terminal
connection

When
switch

yellow
black
wire
is

grounded

warning
lamp
lights

Burnt
bulb
or
loose
bulb

Open
circuit

Lack
of

engine
oil

Oil

pressure
too
low

Inoperative
oil

pressure
switch

Burnt
bulb
or
loose
bulb

Warning
lamp
does
not

light
when

voltage

regulator
white
red
wire
is

grounded

Open
circuit

Faulty

charging
system

BE
20
Corrective
action

Replace
tank
unit
or
correct
terminal

con

nection

Replace
fuel

gauge

Conect
connector
terminal

contact

Replace
tank
unit

Replace
fuel

gauge

Corrective
action

Replace
switch
OJ
correct
terminal
connee

tion

Replace
bulb
or
correct
bulb
socket

Check
oil
level
and
add
oil
as

required

Inspect
engine
oil

pressure
system

Replace
oil

pressure
switch

Replace
bulb

or
correct
bulb
socket

Inspect
charging
system

Body
Electrical

System

RADIO

Noise

prevention

Position
vehicle
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
medium

point
without

catching
broadcasting
wave

Condition

Ignition

system

Noise
occurs
when

engine
is

op

erated

Charging
system

Sound
of

alternating
current

pre

sents

When

accelerator

pedal
is

depressed

or

released
noise

presents

Supplement
equipment

When

engine
starts
noise

presents

Noise

still

presents
even
after

stop

ping
engine

Notes

a
Be
sure
to
locate

capacitor
as

close

as
to

noise
source
and
connect
in

parallel
Probable
cause
Corrective
action

High
tension
wire

Install
new

high
tension
wire

Ignition
coil
Install
a
0

51lF

capacitor
to

primary
side

terminal
of

ignition
coil

Note
Be

careful
not
to
install

capacitor
to

secondary
or

primary
breaker
side
other

wise

engine
becomes

improper

Install
bond

strap

Distributor
Secure
contact
of
carbon
electric

pole
and

rotor

Eliminate

sharp
tip
on

rotor

pole
or

cap
pole

by

scrubbing
with
a

screwdriver

Check

stagger
between
rotor

and
stator

Alternator
Install
a
0

51lF
capacitor
to

charging
termi

nalA

Note
Do

not

use
a
larger
capacitor

If

capacitor
is

installed
to
terminal
F

alternator
coil
will
be

damaged

Regulator
Install
a
0

51lF
capacitor
to
IGN
terminal

of

voltage
regulator

Operative
noise
of
water
tem

perature
and
fuel

gauges
Install
O

IIlF
capacitor
between
terminal
and

ground
wire

Note
If

a

capacitor
having
a

larger
capacity

is
used
indication
of

gauge
will
be
de

viated

b
Cut
lead
wire

as
short
as

possible

c

Ground
wire
should
be
attached
on

the

body

completely

d
Make
installation
and
connection
securely

e

Carefully
identify

or
OUT

mark
IN

BE
35

CD
m
Cl
@
D
@

I

j

1
To
instrument
harness
IS
To
battery
30
To
check
connector

2
To
full
transistor
amplifier
16
To
fusible
link
3t
To
headlamp
L
U
type
2

California
models
only
17
To
engine
harness
No
2
32
To
sido
marker
lamp
L
B

3
To
hood
switch
18
To
alternator
33
To
front
combination
lamp
L
H

4
To
engine
compartment
lamp
1
9
To
front
combination
lamp
R
n
34
To
horn
Low

ll
l
S
To
washer
motor
20
To
headlamp
R
H
type
2
3S
To
horn
High

l
l
0
6
To
auto
choke
heater
relay
1
To
side
marker
lamp
R
n
36
To
B
C
D
D
cut
olenoid
California
models

7
To
detector
dri
e
counter
22
To
headlamp
R
B
type
1
only

Non
Califunia
model
except
for
Canada
23
To
ground
37
To
block
tcrminal
distributor
California

8
To
ignition
relay
California
models
only
i4
To
thermal
transmitter
models
only

9
To
floor
sensor
relay
California
modeb
only
is
To
distributor
Non
California
models
only
38
To
ignition
coil
Non
California
models
only

n
10
To
inhibitor
relay
A
T
only
26
To
8
C
D
D
cut
solenoid
Non
California
39
To
condenser

t
II
To
head
lamp
relay
models
only
40
To
ignition
coil
and
resistor
@

12
To
horn
relay
27
To
fuel
cut
solenoid
California
models
only

OJ
v

m
13
To
voltage
regulator
28
To
auto
choke
heater

g
e
14
To
cooler
cable
29
To
headlamp
L
R
type
1

OJ
to

o
Q
m
r0

C
1
i

Ql
CIl
Il
l
3

m
J
c
@
@
r

1
I
I

I
II

U
j
J

r
U

I
IT

L
U
L
L

@

Qj
flll
I

1

I
I

1

lL

to
t
l

Q
1
To
room
Jamp
cable

2
To
light
switch

3
To
fuse

4
To
tachometer
or
clock

5
To
hazard
flasher
unit

6
To
stop
lamp
switch

7
To
ignition
switch

8
To
hazard
switch

9
To
tU
and
dimmer
switch

10
To
check
connector

11
To
AMP
M
T
only

11
To
combination
instrument

Non
California
mode15
except
for
Canada

13
To
combination
meter

14
To
flasher
unit

IS
To
kickdown
switch
AfT
only

16
To
hand
brake
switch

17
To
heater
motor

18
To
illumination
control
rheostat
19
To
wiper
switch
light
switch
illumination

lamp

20
To
wiper
switch

21
To
cigar
lighter

22
To
heater
control
illumination
lamp

23
To
radio

24
To
heater
control

25
To
belt
and
E
G
R
warning
lamp

Non
California
models
or
floor
te
peratuJe

California
models

26
To
heater
control
illumination
lamp

27
To
buzzer

28
To
belt
warning
timer
U
S
A
Olodels

29
To
indicator
lamp
AfT
only

30
To
cooler
harness

31
To
wiptr
motor

32
To
door
switch
R
H

33
To
engine
compartment
harness

34
To
floor
harness

E
m

S
@
o
J
o

Q
m
CD
n

Ql
en
I
i
3

REFRIGERAi
H
R
12

COMPRESSOR
OIL

MAINTENANCE

PERIODIC
MAINTENANCE
AND

SEASON
IN

INSPECTION

GENERAL
SERVICE
INSTRUCTION

SAFETY

PRECAUTIONS

EV

ACUA
TlNG
AND

CHARGING
SYSTEM

HANDLING

MANIFOLD
GAUGE

HANDLING
SERVICE
VALVE

HANDLING
CAN
TAP

DISCHARGING
SYSTEM

REFRIGERANT
R
12

The

refrigerant
used
in
the
air

conditioner
is

generally
called
Re

frigerant
12

R
12
No
other

refrig

erant
than
the

above

refrigerant
should

be
used

This

refrigerant
is

usually
available

in
a
small
can
or
a

cylinder
In

either

case
it

is

liquefied
under

high
pressure

in
the
container

Refrigerant

evaporates
easily
has
a

low

evaporation
point
and
moreover

since
the
latent

heat
of
the

refrigerant

is

large
it

can
abSorb

a

large
amount

of
heat

wh

err
e

vaporating
Extreme

care
must
be
exercised
when

handling

the

refrigerant

COMPRESSOR
OIL

The
SUNISO
5GS
or
SUNISO

351

should
be
used
as

refrigeration

lubricant

Mixing
of
the

two
is

allowable

The

refrigeration
lubricant
should

be
used
to
assure
the
successful
com

pressor
operation
Use
of
oils
other

than
recommended
or

mixing
of
the

oil

with
other
oils
would
cause

chemical
reaction

or
lead
to
lowered

viscosity
or
deficient
lubrication

The
oil

absorbs
moisture
as
it

con

tacts

the
air
This

points
out
the
need

for

care
not
to

expose
it

to
atmos

phere
for
an

extended

period
of
time
Air

Conditioning

GENERAL
SERVICE

CONTENTS

EVACUATING
SYSTEM

CHARGING
REFRIGERANT

CHECKING
FOR
LEAKS

HALIDE
LEAK

DETECTOR

ELECTRIC
LEAK

DETECTOR

REFRIGERANT
LEVEL
CHECK

SIGHT

GLASS

PERFORMANCE
TEST

COMPRESSOR
OIL
LEVEL
CHECK

PERFORMANCE
TEST

REFRIGERANT

LEAKS
AC
8

AC

8

AC
8

AC
8

AC
8

AC
9

AC
9

AC
9

AC10

AC

11

AC
12

MAINTENANCE

PERIODIC
MAINTENANCE

AND

SEASON
IN

INSPECTION

Both

periodic
maintenance
and

season
in

inspection
are

most
essential

to
enable
the
air

conditioner
to

give

full

performance

Perform
the

following
checks

Start

engine
and

check

refrigerant

level

through
sight
glass
on

receiver

dryer
For

details
refer
to

relative

topics
under

Refrigerant
Level

Check

2
Check
the
entire

sysiein
for

sign

of

refrigerant
leaks

Refer
to
relative

topics
under

Checking
for

Leaks

and

Refrigerant
Leaks

If

any
trace
of
oil
is

noted
at

and

around
connection

fittings
it
is
a

sure

indication

that

refrigerant
is

leaking

This
condition

can
be
corrected

easily

by
retightening
the

joints
If

any
joint

on
line

is

suspected
of
small
amount
of

leakage
use
a
leak

detector
to

locate

leaking
points

3
Check

compressor
drive
belts

for

proper
deflection

Season
off

Observe
the

following
maintenance

tips
to
allow

the
air

conditioner

to

operate

normally
in

the
next

season

I

Keep
the
entire

system
free
from

AC
8
AC12

AC

13

AC15

AC15

AC16

AC

16

AC16

AC
17

AC17

AC
17

AC18

refrigerant
leakage
by

periodically

checking
for

refrigerant
gas
leak

even

out
of
season

2

Turn
the

compressor
for
10

minutes

at
least
once
a
month

by

running
the

engine
at
1

500

rpm

c
ENERAL
SERVICE

INSTRUCTION

The

servicing
of
the
air
conditioner

should
be
carried
out

only
by
well

trained
servicemen
This

chapter
de

scribes
essential

points
of

servicing

Jf

a

Jarge
amount
of

dirt
and
sand

enter

the

system
they
will
be

carried
with

refrigerant
and

may

clog
the

system
or
scratch

rotating

parts
This

points
out
the
need
for

care
in

servicing
the

system
That

is

disconnecting

joints
should
be

carried
out

in
a
dean

place

Water
should
not
be
allowed
to

get

inside
the

system
The

refrigerant

does
not

readily
mix

with
water

However
the

presence
of
even
a

minute

amount
of

water
will
cause

a
chemical
reaction

at

high
tem

perature
which
will
in

turn

produce

hydrochloric
acid

HCl
Since

hydrochloric
acid
is

highly
corro

sive
to
metals
the
aluminum
and

copper
piping
etc
will
become

corroded
and
the

refrigeration

system
will
become

clogged