light DATSUN B110 1973 Service Service Manual
[x] Cancel search | Manufacturer: DATSUN, Model Year: 1973, Model line: B110, Model: DATSUN B110 1973Pages: 513, PDF Size: 28.74 MB
Page 247 of 513
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
Page 248 of 513
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
Page 249 of 513
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
Page 250 of 513
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
Page 253 of 513
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
Page 255 of 513
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
Page 256 of 513
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
Page 258 of 513
BODY
ELECTRICAL
Thermometer
and
fuel
meter
Condition
Both
therrnorneter
and
fuel
rneter
do
not
operate
Both
thermorneter
and
fuel
rneter
indicate
inaccu
rately
Thennometer
Probable
cause
Blown
off
fuse
or
improper
coo
nection
Defective
voltage
regulator
Dam
aged
fused
or
open
contact
Defective
voltage
regulator
Bro
ken
heat
wire
seized
contact
and
or
improper
grounding
Improper
cable
contact
The
thermometer
Defective
thermal
transmitter
does
not
operate
Defective
thermometer
The
pointer
indi
Defective
thermal
transmitter
cates
maximum
temperature
Defective
thermometer
Method
of
inspection
Check
the
fuse
for
fusing
and
improper
contact
Meter
operates
excessively
Meter
operates
slightly
The
pointer
deflects
when
ther
mal
transrnitter
yellow
white
ca
ble
is
grounded
The
pointer
does
not
deflect
when
thermal
transmitter
yellow
white
cable
is
grounded
The
pointer
moves
to
the
low
limit
when
the
ignition
switch
is
turned
off
The
pointer
indicates
maximum
temperature
even
after
the
ignitoD
switch
is
turned
off
BE
23
Corrective
action
Replace
after
cor
recting
the
cause
if
fused
Correct
coo
tact
The
voltage
regulator
is
combined
with
the
thermometer
to
a
single
unit
When
the
voltage
regulator
is
defective
replace
it
together
with
the
thermometer
Replace
together
with
thermometer
Check
the
cable
be
tween
fuse
and
meter
for
improper
contact
and
repair
if
required
Replace
the
ther
mal
transmitter
Replace
the
ther
mometer
Replace
the
ther
mal
transmitter
Replace
the
ther
mometer
Page 259 of 513
The
thermome
ter
does
not
operate
accu
rately
Fuel
meter
Fuel
meter
does
not
operate
Defective
thermometer
Defective
thermal
transmitter
Improper
cable
contact
Defective
tank
unit
Defective
fuel
meter
The
pointer
indi
Defective
tank
unit
cates
Full
po
sition
Fuel
meter
fune
tions
improperly
Defective
fuel
rneter
Defective
tank
unit
Defective
fuel
rneter
BODY
The
thermometer
is
serviceable
when
a
100
n
resistance
is
ap
plied
to
the
thermal
transmitter
yellow
white
cable
the
cable
is
grounded
and
the
thermorneter
indicates
approximately
500C
1220F
When
the
thermometer
is
normal
through
the
above
inspection
The
thermometer
indicates
a
temperature
slightly
lower
than
the
actual
temperature
The
poin
ter
tank
unit
grounded
deflects
yellow
when
the
cable
is
The
pointer
does
not
deflect
through
the
above
inspection
The
pointer
lowers
below
the
ernpty
limit
when
the
ignition
switch
is
turned
off
The
pointer
still
indicates
Full
position
through
the
above
in
spection
The
pointer
indicates
a
half
level
when
a
35
n
resistance
is
applied
to
the
tank
unit
yellow
cable
and
the
cable
is
grounded
The
pointer
does
not
indicate
a
half
level
through
the
above
in
spection
BE
24
Replace
if
defective
Replace
the
therrnal
transmitter
Check
the
cable
from
the
thermometer
to
the
thermal
trans
mitter
for
cable
being
about
to
break
poor
contact
and
faulty
grounding
and
repair
as
required
Replace
unit
the
tank
Replace
the
fuel
me
tee
with
a
new
one
Replace
the
tank
unit
Replace
the
fuel
me
ter
Replace
if
defective
Replace
the
fuel
meter
Page 260 of 513
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