ignition DATSUN B110 1973 Service Repair Manual

Judgement
in

measurmg

line

pressure

I
Low

idling
line

pressures
in
the

ranges
D
2
loR

and
P

It
can

be
artributed
to
trouble
in

the

pressure
supply
system
or
too
low

output
of

power
caused

by

1
A

worn
oil

pump

2

An
oil

pressure
leakage
in
the
oil

pump
valve

body
or

case

3
A

sticking
regulator
valve

2
Low

idling
line

pressures
in

cer

tain

ranges
only

It

is
caused

pressumabIy
by
an
oil

leakage
in

the
devices
or
circuits
con

nected
to
the

relevant

ranges

1
When
there
is
an
oil

leakage
in

the

rear
clutch
and

governor
the
line

pressures
in
D

2
and
I
are

low

but
the

pressure
is

normal
in

R

2

When

an
oil

leakage
occurs
in

the

low

and
reverse
brake
circuit

the

line

pressures
in

R
and
p

are
low

but
the

pressure
is

normal
in
0

2

and
I

3

High
idling
line

pressures

It

is

presumed
to
be

caused

by
an

increased
vacuum
throttle

pressure

owing
to
a

leakage
in
the

vacuum
tube

or

diaphragm
or

by
an
increased
line

pressure
due
to
a

sticking
regulator
CHASSIS

valve

Vacuum

leakage
is

checked

by
di

reetly
measuring
the

negative

pressure

after

removing
the
vacuum

pipe

A

puncture
of
the

vacuum
dia

phragm
can
be

easily
ascertained

because
the

torque
converter

oil
is

absorbed
into
the

engine
and
the

exhaust

pipe
blows

up
the
white

smoke

4

Checking
items

when
the
line

pressure
is

increasing

In
trJs

checking
the
line

pressure

should
be
measured
with

vacuums
of

450
mmHg
and
0

mmHg
in
accordance

with
the
stall
test

procedure

test

procedure

1
If
the
line

pressures
do

not

increase

despite
the
vacuum
decrease

check
whether
the
vacuum
rod
is

incorporated

2
If

the
line

pressures
do
not
meet

the
standard
it
is
caused

mostly
by
a

sticking
pressure
regulating
valve

pres

sure

regulating
valve

plug
or

amptifier

TROUBLE
SHOOTING

CHART

Inspecting
items

1

Inspection
with

automatic

trans

mission
on

vehicle

J

AT
54
A
Oil

level

B

Range
selecr

linkage

C
Inhibitor
switch
and

wiring

D

Vacuum

diaphragm
and

piping

E

Downshift
solenoid
kick
down

switch
and

wiring

F

Engine
idling
rpm

G

Oil

pressure
throttle

H

Engine
stall

rpm

I
Rear
lubrication

J

Control
valve

manual

K

Governor
valve

L
Band

servo

M
Transmission
air
check

N
Oil

quantity

o

Ignition
switch
and
starter

motor

P

Engine
adjustment
and
brake
in

spection

2

Inspection
after

inspecting
auto

matic
transmission

on
vehicle

m

Rear
clutch

n
Front
clutch

q
Band

brake

r

Low
and
reverse
brake

s

Oil

pump

Leakage
of
oil

passage

u

One

way
clutch
of

torque
converter

v

One

way
clutch
of
transmission

w

Front
clutch
check
ball

x

Parking
linkage

y
Planetary
gear

CHASSIS

Trouble

shooting
guide
for

3N71B
Automatic
Transmission

Order
Test
item

Checking
Oil

level

gauge

2
Downshift
solenoid

3

ManuaIlinkage

4

Inhibitor
switch

5

Engine
idling
rpm

6
Vacuum

pressure
of
vacuum

pipe

7

Operation
in
each

range

8

Creep
of
vehicle

Stall
lest
Oil

pressure
before

testing

2
Stall
test

3

Oil

pressure
after

testing

Road
test
Slow
acceleration

Ist
2nd

2nd
3rd

2

Quick
acceleration

Ist
2nd

2nd
3rd

3
Kick
down

operation

3rd
2nd
or

2nd
1st
Procedure

Check

gauge
for
oil

level
and

leakage
before

and
after
each

test

Check

by
sound
whether
solenoid

operates
when

depressing

accelerating
pedal

fully
with

ignition
key
ON

Check

changing
conditions
into

P
R

N
D
2

and
I

ranges
by
moving
selector
lever

Check

whether
starter

operates
in
N

and
tp

ranges
only

and
whether

reverse

lamp
operates
in
R

range
only

Check
whether

idling
rpm
meet
standard

Checking
whether
vacuum

pressure
is
more
than
450

mmHg

in

idling
and

whether
it

decreases
with

increasing
rpm

Check
whether
transmission

engages
positively
by
shifting

N
o
D
N
2
N
I

and
N
R

range

while

idling
with
brake

applied

Check
whether
there

is

any

creep
in
D
2
I
and

R

ranges

2
1

and
R
range
Measure
line

pressures
in
D

while

idling

Measure

engine
rpm
and
line

pressure
in
D
2
I

and

R

ranges
during
fullthrallIe

operation

Notes

a

Temperature
of

torque
converter
oil

used
in
test
should

be

from
600
to
lOOoC

1400
to
2120F
i
e

sufficiently

warmed

up
but
not
overheated

b

For

cooling
oil

between
each
stall
test
for
D
2

1

and
R

ranges
idle

engine
i
e

rpm
at
about

1
200

rpm
for
more
than
1
minute
in
P

range
Measurement

time
must
not
be
more
than
5
secon

Same
as
the
item
I

Check
vehicle

speeds
and

engine

rpm
in

shifting
up
1st

2nd

range
and
2nd
J
3rd

range
while

running
with

lever
in

D

range
and

engine
vacuum

pressure
of

about
200

mmHg

Same
as

the
item
1
above

except
with

engine
vacuum

pressure
of
0

mmHg
i
e
in

position
just
before
kick

down

Check
whether
the
kick
down

operates
and

measure
the

time

delays
while

running
at
30
40
50

60
70
km
h

19

25
31
38
44
MPH
in
D

range

AT
58

BODY

REAR
WINDOW
ELECTRIC

DEFROSTER

Option

J
Instrument
harness

Cooler
terminal

J

1
1
c
BW

Ignition
switch
I
lOA
@

hi

u

Heat
wire

glass
switch

T

Fig
BF
62

Wiring
diagram

The
rear
window

electric
defroster

glass
is
furnished
as

an

optional
equipment
It
is
semi

tempered
and
has

electric
heat
wires
baked
to
make
the
rear
window

glass

clear
under
adverse
weather
conditions
The
heat
wire

glass
switch
and

pilot
larnp
are

located
on
the
left
hand

side
of
the
instrument

as
shown
in

Figure
BF
64

Fig
BF
63

Heat

absorbing
rear

glass
Fig
HF
64
Location

of
heat
wire

glass
switch

and

pilot
lamp

3

Fig
BF
65
Front

floor
wiring

BF
33

DATSUN
1200

MODEL
B
11
0

SERIES

I
NISSAN

I

NISSAN
MOTOR
CO
LTD

TOKYO
JAPAN
SECTION
BE

BODY

ELECTRICAL

WIRING

FUSE

LIGHTING
SYSTEM

HORN

METERS
AND

GAUGES

WINDSHIELD
WIPER

AND

WASHER

IGNITION
SWITCH
AND

STEERING
LOCK

CLOCK

RADIO

HEATER
BE
1

BE
6

BE
7

BE
15

BE

18

BE
26

BE
29

BE

31

BE
32

BE

34

BULB
SPECIFICATIONS

Headlight
unit

Directional
and

parking
light

Side
marker

light

License

plate
light

Rear
combination

light

Taillight

Stop
brake

light

Turn

signal
light

Back

up
light

Meter

illuminating
lamp

Wiper
Washer
illumination

lamp

Heater

control
illumination

lamp

Ignition

warning
light

Turn

signal
indicator

light

Headlight
beam
indicator

light

Oil

pressure
warning
light

Brake

warning
ligh
t

Room

light

TURN
SIGNAL
AND

DIMMER

COMBINATION

SWITCH

Removal

Disconnect
the

combination
switch

from
the
wire

harness
at
the
connector

plug
and
flasher
unit

terrninal

Fig
BE
27

Removing
turn

signal
and

dimmer
combination

switch
BODY

Specifications
SAE
Trade
Number

12V
SO
40W
6012

12V
23
8W

1034

12V
8W
67

l2V
7
5W
89

12V
23

8W

1034

l2V
23

8W

l2V
23W

1073

l2V
23W

12V
I
7W
161

l2V
3
4W
158

l2V
3
4W
57

l2V
17W
161

l2V
17W
161

l2V
17W
161

l2V
17W

161

l2V
17W
161

l2V
IOW

2

Loosen
two
bolts
used

to
install

the
horn

ring
on
the

steering
wheel

by
applying
the
tool
from
reverse
side
of

the

steering
wheel
and

remove
the
horn

ring

3

Remove
the

steering
wheel

fixing
nut
and
remove

the

steering
wheel

4

Unscrew
two

fixing
screws
and
a

locating
screw
and

remove
the

shell
cover

5
Unscrew

two
screws
used
to
install
the
switch
on
the

steering
tube
and

remove
the
switch
from
the

locating

hole

on
the

steering
tube
Now
remove
the

switch
unit

completely

BE
10

BODY
ELECTRICAL

8

G

J

r

ICENSE
LAMPS
10
0
I
I

g
N
Ap
KING

10
00
01
2

I

NATION

J

J
r

j

a
iii

a

g

Lv

F
a
G

G

Lo
o
0

I
I

m

L

J

HER

UNIT
DIMMER

SWITCH
TURN

SIONAl

SWITCH

I
I

Fig
BE
28
Circuit

diagram
for
turn

signal
and
dimmer

switch

system

LIGHTING

SWITCH
HAZARD

WARNING
SWITCH

Removal
The
hazard

lamp
system
4

way
flasher
consists
of

hazard

warning
switch

and
flasher
unit
When
the

hazard

warning
switch
is
turned
on

all

signal
lamps
flash

simultaneously
telling
other
drivers
that
the
vehicle

is

stopped
When
the

turn

signal
lamps
flash
the

pilot
lamps

on
the
instrument

panel
also
flash

telling
you
of
hazard

lamp
operation
1
Rernove
the

connector
from

back
of
the

lighting

switch

2

Depressing
the

lighting
switch
knob

turn
it

counter

clockwise
and
remove
it

3

Loosen
the

escutcheon

switch
frorn
the
cluster
lid
and

remove
the

lighting

IGNITION
SWITCH

EZ

L
I

U
I

JJ

u

HAZARD
UNIT

Ip
FLASHER
UNIT

HAZARD
WARNING
SWITCH

161
6
6

g

Q

a
ll

Zll
Zll

CE
O
a

We
a
l
e

rY

1

LEFT
SiDE
RIGHT
SIDE

Fig
BE
29
Circuit

diagram
for
hazard

lamp
system

BE
11

Flashing
cycle

varies
BODY
ELECTRICAL

Faulty
contact
of

power
supply

circuit

from

ignition
switch
to

fuse

Tail
and

stop
lamp
license

lamp

back

up
lamp

Condition

Both
left
and

right
lamps
do

not

light
Probable

cause

Blown
off

fuse
or

faulty
contact

Defective

stop
larnp
switch
or

backup
lamp
switch
or

faulty

contact

Stop
larnps
and

backup

lamp
only

Faulty
grounding

Only
one
side

lamp
Burnt
out

lamp
bulb
f1lament

lights

Brightness
of

one

side

lamp
differs

from
the

other

HORN

Removal

Adjustment
Faulty
contact
of
connector
ter

minal
and

or
socket

Faulty
contact
of
connector
ter

minal

and
or
socket

BE
16

BE
16

BE
16
When
the
windshield

wiper

which
uses
the

ignition
for

power

supply
is

operated
flashing
cycle

and

brightness
change

Method
of

inspection

Check
the
fuse
for

fusing
and

faulty
contact

When

two
lead
wires
of
the
switch

are
connected
and
the

lamp
lights

the

larnp
and
circuit

are
normal

All
rear
combination

lamps
do

not

light

HORN

CONTENTS

TROUBLE

DIAGNOSES
AND

CORRECTIONS

BE
15
Repair
as

required

Corrective

action

When
the

fuse
is

fused

detect
and
COf

rect
the
cause
and

replace
the
fuse

Replace
the

switch
or

repair
the

connector

terrninal

Repair
the

grounding

cable
contact

Replace
the

larnp

with
a
new

one

Repair
or

replace

Repair
or

replace
if

required

BE
17

BODY

METERS
AND
GAUGES

CONTENTS

CLUSTER
LID

Oescri

ption

Removal

SPEEDOMETER

Replacement

FUEL
GAUGE

AND

TEMPERATURE
GAUGE

Description

Replacement
BE
1B

BE
18

BE
18

BE
19

BE
19

BE
19

BE
19

BE
20

CLUSTER
LID

Description

The

cluster
lid
holds
various
rneters

indicators
and

clock
located
around
the

speedorneter
Printed

circuit

board
is

used
at

the
back
of
the

meter
as
shown

in

Figure

BE
38

and
the

printed
circuit

board
is

connected
with

multiple
connectors
Thus
the
meters

Can
be

inspected

and
serviced

extremely
easily
Except
for
the

speed

ometer
all

rneters
are

operated
electrically
The
fuel

gauge

and
therrnometer
are

very
reliable
and

they
are

equipped

with
bimetal
devices

F
a

o

ill
I

1

a

a

Fig
BE
34
Combination
meters

Removal

Disconnect
the

battery
terminal

depressing
the
OIL
PRESSURE
AND

IGNITION
WARNING
LAMPS

HAND
BRAKE
WARNING
LAMP

BULB
SPECIFICATIONS

TROUBLE
DIAGNOSES
AND

CORRECTIONS

Speedometer

Thermometer
and
fuel

meter

Oil

pressure
and

ignition
warning
lamps
BE
20

BE
21

BE
21

BE
22

BE
22

BE
23

BE
25

windshield

wiper
switch

lighting
switch
and
choke
lever

knobs

turn
them
counterclockwise
to

remove

Remove
the

escutcheon

2

Inserting
your
hand

into
back
of
the

cluster
lid

disconnect
the

cigarette
lighter
cable
and

turn
and

remove
the

cigarette
lighter
outer

case

3
Remove
the
radio
and
heater
control
knobs

4
Remove
the
shell

cover
from
the

steering
tube

loosen
the

screws
used
to
secure
the
meter

housing
to
the

instrument

panel
and

remove
the
cluster
lid

5
Pull
out
the
l2

pole
round

shape
connector
and

remove
the

speedometer
cable
union

nut

6
Remove
the

cluster
lid
from

the
instrument

panel

Fig
BE
35

Removing
clllSter
jd

BE
18

BODY
ELECTRICAL

SPEEDOMETER

The

speedometer
is

equipped
with
a
total
odometer

which

records
travelled
distance

Replacement

1

When

removing
the

speedometer
remove
the
cluster

lid

first

Separate
the
combination
meter

housing
from
the

cluster
lid
after

removing
four
screws
and
remove
the

trip

recorder

reset
knob
if

any

2
Unscrew

two
screws
and
remove

the

speedometer

from
the
combination
meter

housing

3

Reinstall
a
new

speedometer
in

reverse

sequence
of

removal

Fig
BE
36

Removing
combination
meter

o

Fig
BE
37

Removing
sp
edometer
FUEL
GAUGE
AND

TEMPE

RATURE
GAUGE

Description

The
fuel

gauge
consists

of
a
tank
unit

located
in
the

fuel
tank

and
fuel
meter
The
tank
unit

detects
fuel
level

with
its

float
converts
fuel
level
variation
to

a
resistance

of
slide
resistor

installed
on
the
float
base

and
thus

controls
current

flowing
to
the
fuel
meter

The

temperature

gauge
consists
of

a
thermorneter
and

thermal
transmitter
located
in

the

engine
block
The

thermal
transmitter
is

equipped
with
a
thermistor
element

which
converts

cooling
water

temperature
variation
to
a

resistance
and
thus
the
thermal
transmitter
controls

current

flowing
to
the
thermometer

The
fuel
rneter
and
thermometer
are

provided
with

bimetal
a
and

heater
coil
When
the

ignition
switch
is

set
to
ON

current
flows
to
the
heat

coil
and
the
heat

coil
is

heated
With

this
heat
the
bimetal
arm
is

bent
and

thus
the

pointer
connected
to

the
bimetal

ann
is

operated

The
characteristics
ot
both

meters
are
same

A

tolerance

may
occur
on
the

thermometer
or

fuel

gauge
due
to

source

voltage
fluctuation
The

voltage

regulator
is
used
to

supply
a
constant

voltage
so
that
the

therrnorneter
and
fuel

gauge

operate
correctly
The

voltage
regulator
is
built
in
the
thermometer

The

operating
part
of
the

regulator
consists

of
a

bimetal
arm
and
a
heater
coil
When
the

ignition
switch
is

turned
on
the
birnetal
arm
is
heated
and
bent

by
the
coil

opening
the

contact

Consequently
current
to
the

coil
is

interrupted
As
the
bimetal

cools
the

contact
closes
The

repetition
of
this

operation

produces
a

pulsating
voltage

of
8V
which
is

applied
to

the

ternperature
and
fuel

gauges

If

both
thermometer
and

fuel
meters

become
defective

at
the

same
time

this

may
be
attributable
to
trouble
in

the

voltage
regulator

BE
19

BODY

REGULATOR

FUSE
M

TEMPE

RATURE

GAUGE
IGNITION

SWITCH

Lf

I

iT
Ji
1M

THERMAL
TRANSMITTER
I

J

0

I
GAUGE
TANK
UNIT

FUEL
TANK

Fig
BE
38
Circuit

diagram
for
fuel
gauge
temperature
gauge
and

voltage

regulator

Replacement

Remove
the

cluster
lid
first

2
Unscrew
two

screws
and
remove
the

thermometer
or

fuel
meter

from
the

combination
meter

housing

3
Reinstall
a
new
meter
in

reverse

sequence
of
removal

Fig
BE
39

Removing
thermometer

OIL
PRESSURE
AND

IGNITION
WARNING
LAMPS

The

engine
lubricating

system
incorporates
an
oil
pressure

warning
lamp
which

glows
whenever

engine
oil

pressure
falls
below
0
4

kg
ern
to
0
6

kg
em
5
7
to
8
5

lb

sq
in

When
the

engine
is

stationary
the

light
glows
with
the

ignition
switch
turned
on
When
the

engine
is

running
and

the
oil

pressure
reaches
the

circuit
is
broken
and
the

light

goes
out

J

u

fj
Warning
lig

2
Fuse

bSM
Q

f

t

J

without

pressu
re
with

pressure

Fig
BE
40
Circuit

of
oil

pressure
warning
system

Ignition
warning
lamp
glows
when
the

ignition
switch

is
set
to
ON
and
the

engine
is
not

operated
or
when
the

generator
fails
to

charge
with
the

engine
operated

BE
20