1973 DATSUN B110 turn signal

BODY

PASSING
LIGHT

SWITCH

The

passing
light
switch
is

incorporated
in
the

grip
end

of
the
turn

signal
switch
lever
and
controls
the
head

lamp

main
beams
With
either
the

lighting
switch
turned
on
or
off
the
head

lamp
main
beams
will

light
while
the

switch

button
is

pushed
in

CB
FUSE

FUSE
P

T

FUSE

L

DI
TCH

ti

r
1

I

Y
fflf

0
00
0
2

ASSIHG

LICENSE
LAMPS

SWITCH
L

TAil
lAMPS

1
I

I
PASSING

LIGHT
RELAY

FRONT
PARKING

LAMPS
LIGHTING
SWITCH

1
NATlON

HEAD
lAMP

nt
OF

LEFT

sIDe
RIGtfT

SIDE

Fig
BE
30
Circuit

diagram
for

passing
light

system

TROUBLE
DIAGNOSES
AND

CORRECTIONS

Head

lamp

Probable
Me

thod
of

Condition

inspection
cause

All

lamps
do

not

light
Blown
off
fuse
or

faulty
contact
Check
the
fuse
block
and
white

cable
for
contact

Check
the
fuse
for

fusing
and

faulty
contact

Faulty
lighting
switch
terminal

connector
Check
the

connector
for
contact

Defective

lighting
switch
Conduct

continuity
test

The
head

lamp
Blown

off
fuse
or

faulty
contact

does
not

light

for
both

high

and
low
beams
Check
the

fuse
for

fusing
and

faulty
contact

Improper
dimmer
switch
contact
Check
the

connector
for
contact

Defective
dimmer
switch
Conduct
continuity
test

BE
12

r
Corrective

action

Repair
as

required

When

fused
detect

and

repair
the
cause

and

replace
the

fuse

Repair
as

required

If
the

ligh

ting
swi
tch

is
defective

replace

When
fused
detect

and

repair
the
cause

and

replace
the
fuse

Repair
as

required

I

f
the
dimmer
switch

is

defective

replace

BODY

ELECTRICAL

Main

high
beam
Defective
dimmer
switch

cannot
be
switch

ed
to

dimmer

low
beam

or

vice

versa

Head

lamps
dim
Defective

light
circuit

Head

lamps
dim

Partly

discharged

battery

when
the

engine

is

stopped
or

op

era
ted
under

idling
speed
Defective

battery

Head

lamps
still

Faulty
sealed
beam
unit

dim
with

engine

run

above

idling

speed

Faulty
charging
system

Head

light
in

only

one
side

lights
Faulty
head

lamp
terrnianl
con

tact

Defective

lamp

Turn

signal
lamps

Probable

Condition

cause

All
turn

signal
Blown

fuse
or

faulty
contact

lamps
do
not

light
When
red

yellow
cable
is
con

nected

to
red

white
cable
or

red
black

cable
and

the
main

beam
or

dimmer
beam

lights

the
circuit
is

nonnal
The
dimmer

switch
is
defective

Check
the
head

light
circuit

for

cable

being
about
to
break
and

faulty
contact
or
check
fuse
for

faulty
contact

Measure

specific
gravity
of
elec

trolyte

Voltage
between
head

lamp
red

white
cable
and

red
cable
ter

minals
is
12
8V
or

higher

Voltage
is

less
than
12

8V

through
above
test

Method
of

inspection

Check

the
fuse
for

fusing
and

faulty
contact

BE
13
Conduct

continuity

test
and
if
the
dirn

mer
switch
is

defec

tive

replace

Repair
or

replace
if

required

Charge

battery
if

required

Replace
battery

Replace
sealed

beam

units

Check
the

generator

regulator
and

light

circuit

Repair
as

required

Replace
lamp

Corrective

action

When
the
fuse
is

fused
detect
and

repair
the
cause
and

replace
the

fuse

All

turn

signal

lamp
do
not

go

out

Flashing
cycle
is

too

low

Turn

signal
lamp

flashing
cycle
is

too

high

Flashing

cycle
of

the

left
or

right

side
turn

signal

lamp
differs

from

that
of
the

right
or

left

side
turn

signal

lamp
Only
left

or

right
side
turn

signal
operates
Faulty
flasher
unit

terminal
con

tact
or
defective
flasher
unit

Defective
turn

signal
switch

Defective
flasher
unit

There
is
a
lam

p
which
does
no
t

flash

Faulty
contact
in

the
circuit

A

lamp
having
wattage
less
than

the

specified
wattage
is
used

Defective
flasher
unit

Short
ircuit

A

lamp
having
wattage
larger
than

the

rated

wattage
is
used

Defective
flasher
unit

Burnt
out

lamp
bulb
filament

Faulty
connect
contact

A

lamp
other
than

specified
is

used
BODY

When

two
lead
wires
of
the

flasher
unit

are
connected
with

the
turn

signal
switch
turned

on

and
the
individual
turn

signal

larnps
light
the
flasher
unit
is

defective

Conduct

continuity
test

Check
the

lamp
for
burnt
out

filament
and

improper
socket

contact

Check
all

lamps
for

operation

Check

lamp
which
does
not

light

for

burnt
out
filarnent
and
defec

tive
socket

Check
both

side

larnps
for

difference
in

brightness

BE
14
Repair
the
connector

terminal
or

replace

the

flasher
unit

If
the
turn

signal

switch
is

defective

replace

Replace
the

flasher

Wlit

Replace
if

required

Repair
as

required

Replace

Replace
the
flasher

writ

Repair
as

required

Replace

Replace
the

flasher

unit

Replace
as

required

Repair
as
required

Replace
with
the

spe

cified
one

BODY
ElECTRICAL

When
the

ignition
switch
is
set
to
ON
the

ignition

wa

rning
circuit
is

closed
and
current
flows
flows
from
the

ignition
switch
to
the

warning
lamp
bulb

and

ground

through
the

regulator
When
the

engine
is
started
and
the

generator
comes
into
operation
the

generator
output

current

opposes
the
current
flowing
from
the

warning

lamp
in

effect
it
breaks
the

warning
circuit

ground

connection
and
the

lamp
goes
out

l

r

hffi
u

z
Ignition
switch

I
Q
6

I
0

c

M
1
E

8

ca
i

L

g

PI
lot
c

P

I

j

co

rt
0

relay
E
0

5

y
y
1

N
N
3

Alternator

Regulator

Fig
BE

41
Circuit

of
ignition
warning
system

HAND
BRAKE
WARNING
LAMP

This

lamp
functions
both
hand
brake

warning
larnp
and

BULB
SPECIFICATIONS
service
brake
line

pressure
differential
warning
lamp

When
a

difference
between
front
and

rear
brake
line

pressures
reaches
the
rated

range
13
to
17

kgfcm2
185

to

242
lb

sq
in
the

ground
circuit
for
the

warning
lamp

is

closed
and
the

warning
lamp
lights

IGNITION
SWITCH

WARNING

LAMP

L
E

WARNING

SWITCH

1
SERVICE

BRAKE
LINE

PRESSU
R
E

DIFFERENTIAL

WARNING

J
SWITCH

Fig
BE

42
Circuit

diagram
for
brake

warning

system

tern
Specifications

Square

type
meter
Round

type
meter

Meter
illumination

larnp
VoW
12
3
4
2
12

1
7
3

Turn

signal
pilot
lamp
VoW
12
3
4
2
12
1
7
2

Head

lamp
main
high
beam

VoW
12
3
4

I
12

17
1

pilot
lamp

Ignition
warning
lamp
VoW
123
4

I
12
17
1

Oil

pressure
warning
lamp
VoW
12
3
4

1
12
1
7

1

Hand
brake

warning
lamp
VoW
12
1
7
1

for
U
S
A

CANADA

Clock
illumination

lamp
VoW
123
4
I
12
17
2

Figure
encircled
in

parentheses
indicates
number
of
bulbs
used

BE
21

BODY

ELECTRICAL

Distributor
Secure

ground
of

ignition
coil

Secure
contact
of

carbon
electric

pole
and

rotor

Eliminate
excessive

tip
on
the

rotor

pole
or

cap
pole
by
scrubbing
with

a
screwdriver

Check

stagger
between

rotor
and

stator

Charging

system

Sound
of

alternating
current

pre

sents
Alternator
Install
a
0
5

l
F

capacitor

on

charging
terminal
A

Note
Do
not
use

capacitor
ex

cessively

If

capacity
is
used
ex

cessively
the
alternator
coil

will
be
broken

When

the
accelerator

pedal
is
de

pressed
or
released
noise

presents
Regulator
Install
a
0
5
l
F

capacitor
on
A

terrninal
of
the

voltage
regulator

Supplement
equipment

When

engine
starts
noise

presents

Noise

still

presents
even
after

stopping
the

engine
Operative
noise

of
ther

rnometer
and
fuel

gauge
Install
0
1
l

F

capacitor
between

terminal
and

ground
wire

Note
If

a

capacitor
having
ex

cessive

capacity
is
used
indi

cation
of
meter
will
be
devi

ated

Noise

presents
when
horn
is
blown

Horn
Install
a
0
5

IF

capacitor
on
the

horn

relay
terminal
or
horn

switch

Noise

presents
when
turn

signal

lamps
are

operated
Flasher
unit
Install
a
0

5
l
F

capacitor

Note
a
Be

sure
to
locate

capacitor
most
near

position

of
noise

source
and

connect
in

parallel
completely

d
Make

installation
and

conneCtion

securely

b

Cut
lead

wire
as
short
as

possible

c
Ground
wire
should
be

placed
on
the

body
e

Carefully
identify

marks
IN
or
OUT

BE
33

EMISSION
CONTROL
AND

TUNE
UP

Operation
manual
transmission

equipped
model

The

operation
of
the
solenoid
is

by
means
of
the

movement
of

the

speedometer
needle

When
vehicle

speed
falls
below
16

km
h

10

MPH
the

needle
movement

produces
a

signal
which
in
turn
is

amplified
to
actuate
the

solenoid

I
Vehicle

speed
Speed
Throttle

Throttle

switch
opener

opener

solenoid

Below
16
km
h
Not

10
MPH
ON
ON

actuated

Above

16
km
h

OFF
OFF

Actuated

10
MPH

Operation
automatic
transmission

equipped
model

The

solenoid
is

operated
by
an
inhibitor

switch
which

actuates
the
solenoid

only
when
the
transmission
is

placed
in

the
N
or
P

position

c
fil

rn

AT057

Fig
ET
18

Inhibitor
switch
installation

Checking
and

adjusting
throttle

opener

Principally
it
is

unnecessary
to

adjust
the
throttle

opener
however
if
there
is

any
requirement
the

adjust

ment

procedure
is
as

follows

Prepare
the

following
tools

1
A

tachometer
to
measure
the

engine

speed
and
a

screwdriver

2
A
vacuum

gauge
and

connecting
hose

ET
13
Notes
a
A

quick

response
boost

gauge
such

as
Bour

don
s
tube

type
is
recommended
Do
not

use

mercury
manometer

b

Any
special
tools

are
not

required

Warming

up

Warm

up
engine
until
it
is
heated

to

operating

temperature
Make
sure
that

the
automatic
choke
valve

is

fully
open

Connecting
vacuum

gauge

Disconnect
vacuum
hose
between
intake

manifold
and

automatic

temperature
controlled
air

cleaner
install

a

vacuum

gauge
to
intake
manifold
connector
as
shown

in

Figure
ET

19

1
Intake
manifold

2
Connector

3
Vacuum

gauge
4
Vacuum
control
valve

5
Throttle

opener

solenoid

Fig
ET
19

Adjusting
throttle

opener

Deenergizing
solenoid

Disconnect
throttle

opener
and
vacuum

cutting
valve

solenoid
harness

and
free
solenoid

Adjusting
idling

Check
the

engine
idling
Adjust
if

necessary

Engine
idling

rpm
Idling

timing

I
CO

degree

SO

BTDC

I
L51c0
5

SO

BTDC

I
I
S
1c
0
5
M
T
Car

A
TCar
800

6S0
in
D

TRANSMISSION

COLUMN
SHIFT
CONTROL
SYSTEM

Removal

Remove
the

steering
wheel

assembly

Fig
TM
54
Rem01

ing
steering
wheel

2
Remove
the

steering
column
shell
cover
turn

signal

and

lighting
switch

completely

Fig
TM
55
Removing
steering
column
shell
cover
Fig
TM
56
Removing
turn

signal
and

lighting
switch

3
Remove
the

snap
ring
and
control
lever

pivot
pin

and
withdraw
the
hand
lever

A

A
V

l
Y

e

f
I
1

I

V

e

tl
f

r
4

2i
L

1

I
Snap
ring

2
Control
lever

pivot
pin

I
3

I
C
washer

Fig
TM
57
Withdrawing
hand
ever

4
Remove
the

C
washer

TM
17
i

MI
ig

r
M

5J
emOVing
change
lever

J
y

Ji

1

r

oJ