diagram DATSUN PICK-UP 1977 User Guide

If
the
result

is
N
C
Take

the

following
measures

I
Check
BW
and
B
color

wire

harness

respectively
for

proper
con

ductance

2

Check

battery
terminals

for

proper
connection

3
Check

charge
condition
of
bat

tery
if
an

excessively
low

voltage
is

indicated

2

CONTINUITY
CHECK
OF

PRIMARY
CIRCUIT

2
1

CheckIng
prImary

circuit
See

wiring

diagram

In

Fig
EE
89

Proced
ure

I

Disconnect

L
color
wire

from

ignition
unit

2

Turn
on

ignition
switch

3

C
ooneet
a
cireui
t

tester
or
an

oscilloscope
as
shown
in

Figure
EE
78

DC

50
volt

range

tf
S

EE303

Fig
EE

78
Checking
primary
circuit

Criterion

When

Donnal

power
Source

battery

voltage
is

indicated

OK

Lower

or
no
indication

N

G

If
the

result
is

N
C

Take

the

following
measures

1

Check
BW

and
L
color

wire
Engine
Electrical

System

harness

respectively
for

proper
con

ductance

2

Check
resistor

and

ignition
coil

terminals
for
loose

contact

3

Check
resistor
and

ignition
coil

for

discontinuity

4
Check

WB

color
wire
harness

of

ignition
coil

assembly
for

proper

continuity

2
2

Chacklng
IgnitIon
coil

auembly
See

wiring

diagram
In

Fig
EE
90

Procedure

I

Disconnect

ignition
coil
and
dis

tributor

harness
from

ignition
coil

external
resistor

2

Connect
a
circuit
tester
as

shown

in

the

figure
below

Resistance

1

range

Q

o
fD

ro

EE336

Fig
EE
79

Checking
ignition
coil

assembly

Criterion

When

approximately
1
6

to

2

0

ohm
is

indicated

OK

More

than
2

0
ohm

N
C

If
the

result
is

N
C

Replace

ignition
coil

assembly

3
PICK

UP

COIL

CONTINUITY

CHECK

See

wirIng
dIagram
In

Figure
EE
91

Procedure

Disconnect
R

and
G

color

wires
from

ignition
unit

2
Connect

a
circuit

tester
as
shown

in
the

figure
below

EE

3B
Resistance

10

range

fp

EE305

Fig
EE

BO

Checking
pick
up
coil

Criterion

When

approximately
720
ohm

is

indicated

OK

Far
less
than
or
more

than

720
ohm
N
C

If

the
result
is
N
C

Replace

pick

up
coil

assembly

4

PICK
UP
COIL
POWER

SIGNAL

PULSE
CHECK

Procedure

I

Disconnect
anti

dieseling
solenoid

valve

connector

2

Connect
a
circuit

tester
as

shown

in

the

figure
below

3

Rotate
starter

motor

4

Read
the
tester
indication

AC
2
S
volt

range

EE306

Fig
EE
81

Checking
pick
up
coil

power

aignal
pulse

Criterion

When

pointer
deflects

slightly
OK

When

pointer
does
not
deflect

at
all

N
C

If
the

result
is

N
C

Replace

pick

up
coil

assembly

Procedure
with
an

oscilloscope

1
Disconnect
anti

dieseling
solenoid

valve
connector

2

Connect
a

positive
lead
of
an

oscilloscope
to
R
olor
wire

and
a

negative
lead
of
an

oscilloscope
to

G
color
wire

3
Set
a
SLOPE
select
switch
of

an
oscilloscope
to
the

positive
side
If

so

equipped

4

Rotate
starter
motor

5
Check
the

wave
form
as
shown
in

the

figure
below

EE268

Fig
EE
82
Wave

form
of
pick
up
coil

Criterion

When
the

wave
form
takes

the

shape
of
a

full
line
OK

When
the

wave
form
takes
the

shape
of

a
dashed
line

or
when

there

is
no
wave

form
N

G

If
the
result
is
N
G

Replace

pick
up
coil

assembly

5

TRANSISTOR
IGNITION

UNIT

CHECK
See

wiring

diagram
In

Figure
EE
92

Check
items
5
1
and
5
2
with

an

oscilloscope

Where

an

oscilloscope
is
not
availa

ble
check
to
make
sure
that
all

previ

ous
tests
are

satisfactory
and
that
no

spark
is

issuing
from
the

secondary

high
tension
wire

If

everything
else
is

satisfactory

then
the
transistor

ignition
unit
is

faulty
or
there
is

discontinuity
in
the

secondary

high
tension
wire

Replace

the

faulty
part
After

replacement

check
the

sparks
from
the

secondary

cord

5
1

Checking
operatIon

of
transIstor

Ignition
unit

Procedure

I

Connect

ignition
coil
and
dis

tributor
harness
to

ignition
coil
exter

nal
resistor
Engine
Electrical

System

Oscilloscope

o

EB

80

To

body
metal
Ignition
coil
terminal

8W

r
8

0

C
0

EB

Fig
EE
83

Checking
operation
of
transistor

ignition
unit
EE307

@

@

2

Connect

wiring
harness
to
the

ignition
unit

3
Disconnect
anti

dieseling
solenoid

valve
connector

4

Connect
oscilloscope
as
shown
in

Figure
EE
83

rotate
the
starter
motor

and
observe
the
wave

form
on
the

oscilloscope

Criterion

See

Figure
EE
84

When

a
wave
form
similar
to

a
is
observed
OK

When
a
wave
form
similar
to

b
is

obseIVed

or
when
no
wave
form
is

observed
N

G

If
the
result
is
N
G
the
fault
lies

either
in
the
transistor
unit

or
in
the

secondary
high
tension
wire

Replace
these

parts

EE
39
EE452

Fig
EE
84
W
uve

form
of
pulse

If
an

oscilloscope
is

not
avail

able

Procedure

1
Connect

ignition
coil
and
dis

tributor
harness
to

ignition
coil
exter

nal
resistor

2

Connect

wiring
harness
to

igni

tion
unit

3

Disconnect
anti

dieseling
solenoid

valve

connector

4

Keep
the

secondary
high
tension

wire
end
4
to
5

mm
0
16
to
0
20
in

away
from

engine
block
rotate
the

starter
motor
and
check

whether

sparks
fly
across
the
clearance

Criterion

Where
sparks
issue
OK

Where

no
spark
issues
N

G

If
the
result
is
N
G
the
fault

lies
either
in

the
transistor
unit
or
in

the

secondary
high
tension
wire

Replace
these

paris

P

range
Park
Automatic
Transmission

L
A

r
k

8r
k

I

f

I
CID
VK

TIlro

V
lv

I
I

2
ID
Mocl

1
5
FrOl
ll

Clutch
Au

rr
tth

1
1
1

r

I

r

D

II

R
tOl
V

II

L

I
Torqu
Con
ter

0

I
ump

4

011
Coo

AM
Lubr
tlo

D
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t
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l

Front

o
v

n
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Not
rk
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to

Sol
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BI

Cow
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1111

II
I

I

il
1111
III

r
Orlflc

K

v

Throttl

Dr
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v

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11
5

@
2nd
3
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Timing

I

V
l
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l
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Lock

V
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n

l
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r
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21

Or
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pr
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100
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OoverrwJf
VIIfve
BIeOM
IV

OOll
nor
Y
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Oo
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It

Torqu
conv
ner

Throttl

Fig
A
T
25
Oil

pressu
circuit

diagram
P

range
Parh

AT
15

R
range
Reverse

Torq
Con

Oil
Cool
r

A
r

Lubt

lcetlon

0

II
iL
Vel

o

Front

or
ln

l

n

jL
r

x

Q

A
uletor

Val

NIJte
kld
Automatic
Transmission

@
2nd
3n
l

Timl
lil

1i
II

r

U

nu

r
l3
ni

II

15
15
Front

Cll
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Low

a
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Br
k

B
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II
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LJ

2f
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p
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lf
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1

Thrc

r

V
I

I

11
1

IU

T
R

Clutch

f

r

Ir
l
II

Orlflc

Check

Velve

22

n
@lnd
3rdShlft

v

D
h
III

r
r
I

I

111

L

Ll
p
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f
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p
r

Goy
norpreat
l

Torque
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r

Throttl

D
ln

v

5

1

O
eln

rmrp

Throttl
p
a
nor
v
11

J

I

t

Q
V

1ve

Fig
A
T
28
Oil

preBBure
circuit

diagram
R

range
Reverie

AT
17

Automatic
Transmission

P

range
Park

Front

Cluteh
1
1

Brllk

ar

Bond

Torqu
Con

u

o

ID
VK

Th
o

I

V
II
IftY

all
Coo

II

I

Front

Lubrk
It
n

Orltlc

Check

V
A

L
b
k

tlon

1

e

O
ln

I

ThrOttle

D
ln

V

21

j
r

tUI
lor
V
h

@

V
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N01
M
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r
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ln
5

I

I

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Line
pr

Go
nor
t
d
pr

L
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Q
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p

c
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Torq
co
p
f

Th
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p
Iecond
y

Ocw
no
V

Gover
V

Fig
A
T
25
Oil

pressure
circuit

diagram
P

range
Park

AT

IS

R

range
Reverse
Automatic
Transmission

TOl
QuaConverter

o

IIi
0

ou

14

Q

FI
Lu

IUt
O

Front

Lub
lc

O
lnV
ly

R
MO
V
l
Front

Clutdt
LowaoA

B
k

e
k

B

Clutch

ID
VK

n

V
lv
@
ftV
1

I

j

Throttle

O
in

V
Otlflce

Check

V
III

@lnd
3rdShih

V

zz

@
2nd
rd
TIm

If

V
Iy

Second
Lock
V

3
I

Zl

Not

M
k
d
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0
1

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p
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f

P

G
preau

I
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Torqu
0
0
pr

Throttl

p
1
s
co

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V
0

O
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Fig
A
T
28

AT
17
Oil

pressure
circuit

diagram
n
II

range
Reverse

Automatic
Transmission

N

ranee
Neutral

I
a

a

8

nd

011
Coolei
VK

Th

o

Vtlv
J
@

Vtlv

I

I
D
ln

Ol
v
Lubrlc
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11

I

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Lubrlut

O
lfIC

Check

Vtlv

D
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I

T
uott

O
in

v

8Jl

12

ht
2nd
Shift
y
tve

5

CD

Rl9UlttO
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Nott
M
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1
or

IOo
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fNd
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no

p

c
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Torqu
con
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pr

Throttl
p
s
cond

y

a

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V
o
V
tve

Fig
AT
29

AT
19
Oil

pressure
circuit
diagram
N

range
Neutral

Automatic

Transmission

0

range
Low

gear

Torque
Conven
Front

Clul
L
A

e

B

6
Clutch

I

Q

011

Cool
TIC
011

p

V

RUf

LubtJuflon

n

Ii
IO
lln

V
l

F

ont

Lub
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0
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tOO
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Note
U
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or
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feed

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no
p

Torque
co

p

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ID
v

Th
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Orifice

V

L

13

t

12

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5

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v

Fig
A
T
32
Oil

pressure
circuit

diagram
uD

1
range
Low

gear

AT
21

Automatic
Transmission

0
ran
e

2nd
ear

I

I

l
I

7
Throttle

k

up
ftV

V

II

I

ont

Lubtlclt
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Orifice

C
Kk

Val
C

alnV
I

Th
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O
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Valve
2
S
Mod
V
l

IS

13

CD

Regulator
V
@2rlCl
3
dShlft

V

13

F

311ft
2nd

Shift
V
l

S

Manual

V

PR

Nota
M
X
r
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1
n

I
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O
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p
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Fig
A

T
35
Oil

pressure
circuit
diagram
D

z
range
2nd

gear

AT

23

Automatic

Transmission

0

range
Top
gear

Low
A

lI
eke

B
e

I

mf
D

J

J

V
va
I

011
COO
VK

Thro

V

o

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oi

v

L
R
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y

Front

Lubric

1
n

Oriliu

Check

1

1
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Th
onla

O

eln

Vah
2
P
M
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I

5

22

x

i2J

3
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Shift
v

1Ye

5

Manue

Val

PRND2
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Pr

R
I
Of
1

1

5

Nota
Marked
r

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rs

ond

y
l

y

G
nor

Val
Goy
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1

1

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feold
P

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no

p

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c

on
n

p

Th
onl
pr

Fig
A
T
38
Oil

pressure
circuit

diagram
uD

J
range

Top
gear

AT

25