warning DATSUN B110 1973 Service User Guide

BODY
ELECTRICAL

Improper
cable
contact

Oil

pressure
and

ignition
warning
lamps

Condition

Oil

pressure
Want

ing
lamp

The

lamp
does
not

ligh
t
when
the

ignition
switch
is

set

to
ON
Probable

cause

Blown
off

fuse
or

faulty
contact

Broken

lamp
bulb
fIlarnent
or

faulty
cable
contact

Defective
oil

pressure
switch

The

lamp
does
not
Oil

pressure
is

too
low

go
out
while
the

engine
is

being

operated
Lack
of

engine
oil

Defective
oil

pressure
switch

Ignition
warning

lamp

The

lamp
does

not

light
when

the

ignition

switch
is
set
to

ON
Blown
off
fuse
or

faulty
contact

Burnt
out

light
bulb
filarnent
or

faulty
cable
contact
The
fuel
rneter
indicates
a

level

slightly
lower
than

the
actual

level

Method
of

inspection

Check
the

fuse
for

fusing
and

faulty
contact

The

warning
lamp
does
not

light

when
oil

pressure
switch

yellow

black
cable
is

grounded

The

warning
lamp
lights
through

the

above

inspection

Inspect
the

engine
oil

pressure

system

Check
oil
level

Continuity
exists
on
the
oil

pres

sure
switch
when
the

engine
is

being
operated

Check
the
fuse
for

fusing
and

faulty
contact

The

pilot

lamp
does
not

light

when
the

voltage
regulator
con

nector
is
disconnected
the

white
red
cable
is

grounded
and

the

ignition
switch
is
set
to
ON

BE
25
Check
the
cable

from

the

fuel
meter
to
the

tank
unit
for

cable

being
about
to
break

poor
contact
and

faulty
grounding
and

repair
as
required

Corrective

action

Replace
after
corree

ting
the

fuse
the

cause
if
fused

Check
the

light
bulb

for
burnt
out
fIla

ment
and

replace
as

required

Replace
the
oil

pres

sure
switch

Add
oil

Replace
the
oil

pres

sure
switch

Repair
or

replace
as

required

Check
the
bulb
for

burnt
out
fIlament

and

replace
as
re

quired

BODY
ELECTRICAL

Improper
stop
position
of

wiper
arm
Improperly
positioned
blade
and

arm
Correct

position

Damaged
or
worn
auto

stop
point
Replace
motor

Improper
wiping
Worn

rubber
blade
Replace
blade

Inadequate
pressing
force
of

wiper

arm
Replace
wiper
arm

IGNITION
SWITCH
AND
STEERING
LOCK

CONTENTS

IGNITION
SWITCH

Removal

IGNITION
SWITCH
WITH

STEER
ING
LOCK
BE
29

BE
29

BE
29

IGNITION
SWITCH

This
3
or
4

position
switch
is
installed
on
the

ignition

switch
bracket

which
is
installed
on
the
instrument

panel

with
two
screws
and
controls
the

engine
ignition
system

and
most
of
electrical

equipment

Removal

Remove
the

ignition
switch
connector
loosen
the

ring

nut
remove
the

ignition
switch

from
the
bracket
Description

Steering
lock

replacement

Warning
switch
and

warning
buzzer
BE
29

BE
30

BE
30

Fig
BE
49

Removing
ignition
switch

IGNITION
SWITCH
WITH

STEERING
LOCK

Description

The

steering
lock
is
built
in
the

ignition
switch
When

the

key
is

set
to
Lock

position
and
rernoved
the

steering
system
is
locked

automatically
The

locking

8E
29

mechanism
is
installed
on
the

steering
jacket
tube
When

the

key
is
set
to

Lock

position
and

removed
the

steering
lock

spindle
is

inserted
in
a
notch
in

the
collar

which

is

stationarity
set
on
the

steering
shaft
to
lock
the

steering
wheel

The

ignitiun
switch

is
installed
on
the

back
of

key

cylinder
with
a

attaching
screw
and

interchangeable

tf
iY
t

7

a

1

Ignition
switch

part

2

Key
cylinder

part

3

Steering
jacket
tube

4
Lock
collar
5
Lock

pindle

6

Steering
shaft

7
Self

shear

type
screw

8

Attaching
screw

Fig
BE
50

Steering
lock

Key

position

Terminal
OFFor

GARAGE
Lock
ON

ST
ART

B

Battery

IG

Ignition

S
Starter

R
Resistance
b

1

Steering
lock

replacement

For
the

purpuse
of

tamper
proof
the
self
shear

type

screws
are

used
and
their

heads
are
sheared
off
when

installed
so
that

the

steering
lock

system
cannot
be

removed

easily
Replace
the

steering
lock

proper
in

accordance
with
the

following
instructions
when

required

Loosen

two

attaching
screws
and
break
the

remaining

twu
self
shear

type
screws
with

a
drill

or
other

proper

tool

Now
remove
the

steering
lock

proper
from
the
BODY

BE
30
steering
jacket
tube
When

installing
a
new

steering
lock

proper
be

sure
tu

tighten
two
new
self
shear

type
screws

to
shear

off
their

heads

Warning
switch
and

warnmg
buzzer

Fig
BE
51

Warning
switch

The
circuit
of
this

warning
system
is
closed

when
the

door
is

opened
with
the

steering
unlocked
because
the

door
switch
and

warning
switch

are
connected
in
series

When
the
cicuit
is
closed
the

buzzer
sounds

When

replacing
the

warning
switch
disconnect

two

cables
remove
the

cap
loosen
two

attaching
screws
and

remove
the

warning
switch

The

warning
buzzer
is
installed

on
the

back

left
side

of
the
instrument

panel
with

two

attaching
screws

FUSE
WARNING

SWITCH

WARN

BUZZ
G

n

WITCH

t

Fig
BE
52
Circuit

diagram
for

warning
system

ENGINE
ElECTRICAL

SYSTEM

CHARGING
CIRCUIT

IGNITION

1

i
n

ITCH

r
B

i
i

vel

oU

ARMATURE

lip
J

l
t

lJ

FIEL

Df

e
I
I
3
2

I

u
P

5
0

IL
U
p

P
f

H
i

I

I

L

J

L
J

ALTERNATOR

VOL
TAGE

REGULATOR
The

charging
circuit

consists
of
the

battery
alternator

regulator
and

necessary
wiring
to
connect

these

parts
The

purpose
of
this

system
is
to
convert

mechanical

energy

from
the

engine
into

electrical

energy
which

is
used
to

operate
all

electrically
operated
units
and
to

keep
the

battery
fully
charged

When
the

ignition
switch
is

set
to
on

current
flows

from
the

battery
to

ground
through
the

ignition
switch

voltage

regulator
IG
terminal

primary
side
contact

point

PI

movable

contact

point
P2

voltage
regulator
F

terminal
alternator
F
terminal

field
coil
and
alternator

E

terminal
as
shown
in

Figure
EE
27

by
full

line
arrow

marks
Then

the
rotor
in
the
alternator
is
exited
On
the

other

hand
current
flows
from
the

battery
to

ground

through
the

ignition
switch

warning
lamp
voltage
regu

lator
L
terminal

lamp
side

contact

point
P4

movable
contact

point
PS
and

voltage

regulator
E

terminal
as
shown

by
dotted
line

arrow
marks
Then
the

warning
lamp
ligh
ts

When
the

alternator

begins
to

operate
three

phase

alternating
current
is

induced
in
the

armature
This

alternating
current
is

rectified

by
the

positive
and

negative

silicon

diodes
The

rectified
direct
current

output
reaches

the
alternator
A
and

E
terminals

On

the
other
hand
the
neutral

point
voltage
reaches

N
and
E

terminals

nearly
a

half
of
the

output

voltage
and

current
flows

from

voltage
regulator
N

terminal
to
E

terminal
or

ground
through
the
coil
VCI
as
shown
in

Figure
EE

28

by
the
dolled

line

arrow

marks
Then
the

coil
vc
I
is

excited
and
the

movable

contact

point
P5

comes
into
contact

with

voltage

winding
side
contact

point
P6
This
action

causes
to

turn
off
the

warning
lamp
and

complete
the

voltage

winding
circuit
as

shown

by
the
ullline
arrow
marks

When
the

alternator

speed
is
increased
or

the

voltage

starts
to
rise

excessively
the
movable
contact

point
P2

is

separated
from

the

primary
side
contact
P

1

by
the

magnetic
force
of

coil
V2

Therefore

register
RI
is

applied
into
the
field
circuit

and

output
voltage
is

decreased
As
the

outpu
t

voltage
is

decreased
the

movable

contact

point
P2

and

primary
side

contact
PI
comes

into

contact
once

again
and

the
alternator

voltage

increases

Thus
the

rapid
vibration

of
the

movable

contact

point
P2
maintains
an

alternator

output

voltage
to
constant

When
the

alternator

speed
is

further
increased
or
the

voltage
starts
to
rise

excessively
the

movable
contact

point

P2

comes
into
contact
with

secondary
side

contact

point
finally
Then
the

field
current
is
shut
off
and

alternator

output
voltage
is
decreased

immediately
This

action

causes
to

separate
movable
contact
P2
from

secondary
contact
P3

Thus
the

rapid
vibration
of
the

movable
contact

point
P2
or

breaking
and

completing

the
field
circuit
maintains
an
alternator

output
voltage
to

constant

j

T
SA

TIERY

I

l

e

7

Fig
EE
27

ChaTging
ciTcuit
1

EE
15

Charge
relay

SPECIFICATIONS
AND
SERVICE

DATA

TROUBLE
DIAGNOSES

AND

CORRECTIONS
ENGINE
ElECTRICAL
SYSTEM

Reduction

limit

Repair
limit

Repair
accuracy
mm

in

mm
in

mm
in

REGULATOR

CONTENTS

DESCRIPTiON

MEASUREMENT
OF
REGULATING

VOLTAGE

ADJUSTMENT

Voltage

regu
lator
EE
23

EE
24

EE
25

EE
25

DESCRIPTION
I
0

0394

0
3
0
0118

0
05
0
0197

EE
26

EE
26

EE
27

1

I
T
r

@
V
The

regulator
basically
consists

of
a

voltage
regulator

and
a

charge
relay
The

voltage
regulator
has
two
sets
of

contact

points
a

lower
set
and

upper
set
to

control

altemator

voltage
An

armature

plate
placed
between
the

two
sets
of
contacts

moves

upward
or

downward
or

vibrates

The
lower
contacts
when

closed

complete
the

field
circuit
direct

to

ground
and
the

upper
contacts

when
closed

complete
the
field
circuit

to

ground
through

a
resistance

field
coil
and

produces
alternator

output

The

charge
relay
is

similar
in
construction

to
the

voltage

regulator

When

the

upper
contacts
are

closed

ignition
warning

lamp
goes
on
I
Point

gap

2

Lower
contact

3
Armature

4
Core

gap

5
Yoke

gap

6

Connecting
spring

7
Yoke

8

Adjusting
screw

9
Locle
nut
10

Adjust
spring

11
Coil

12

3mmCO
1181
n
dia

screw

13
4
mm
0
1575

in
dia

screw

14
Contact
set

15

Upper
contact

Regulator
model

Applied
alternator
a
Construction

of

voltage
regulator

TLlZ
57

LTl35
13B

I
Point

gap
10
Lock
ut

2

Charge
elay
antact
Ii
Adjust

spring

3

Connecting

sprinl
12
Coil

4
Armature
i3
3
mm

0
1181
dia

5
Core

gap
screw

6
Yoke

gap
14
4mm
O
1575
n

dia

7
Yoke
crew

8

Adju
ting
screw
15
Contact
set

9
Voltap
e

ree
ulaloT
contact

b

Cons
rue

ion
of

charg
relay

Fig
EE
5J
Structural
view
Fig
EE
50
View

of

removing
cover

As

for
the
construction
the

voltage
regulator
is

very

similar
to

the

charge
relay
as
shown

in

Figure
EE
51

EE
23