1984 NISSAN 300ZX lock

METER AND GAUGES - Digital Type Combination Meter
Trouble-shooting (Cont’d)
Go to “Displav Check”
ING OK
Replace meter and
gauge assembly
v
Check oil pressure sensor circuit
OK NG
Go to “Oil Pressure
Sensor Check” Replace meter
and gauge
assembly
Check harness between Replace oil
oil pressure sensor and meter pressure
sensor
1 Disconnect meter harness connector
(black)
2 Measure resistance between @ and @
when engine stopping and running
Ohmmeter
Engine Resistance
Approx 75R or more
Idling Approx 60R or less
SEL672D
“Trip”, ”Ave speed” and “Dist to empty” meters
1 Go to ”Display Check” 1
Go to “Power Unit Check”
Replace trip Replace power unit
meter assembly
Only “Ave speed” meter does not operate
I
I Go to “Display Check“ I
lNG
OK
Replace trip
meter assembly
I Check clock for proper operation I
Check harness between Replace clock
clock and meter
I OK v
Replace trip meter assembly

01 L OIL OIL
PRESSURE TEMPERATURE PRESSURE SENSOR SENSOR SENSOR
I
BOOST
SENSOR
v) m r
P 0
%
@ f$& BODY GROUND
m
h
(Instrument harness)
FUSE
BLOCK J
COMBINATION GAUGE
VOLTMETER
GAUGE
4
GAUGE
BOOST METER
TRIMMER
IGNITION SWITCH
ON or START
I G (Main harness)
Turbocharger
model
Nom turbocharger
model
A/T model
M/T model
3
m
-I
m
rn
D
z
U
0
D
C
0
rn
ui
I
z
(D (D Q
T
-I Y
0 (D
0 0
3
0
¶ 9)
¶
9) c
0
(D
-.
E
G)

TIME CONTROL SYSTEM
Trouble-shooting (Cont'd)
CHIME CIRCUIT CHECK
1
2
Turn ignition switch to "OFF"
Measure voltage across @ and @ when
driver's door
is opened and closed
Check from harness ride I
I Warning chime does not actlvate
1
I Go to "Power SUDD~V Circuit Check" 1
ignition rwltch OFF Approx 12Vwhen drlver'r stde door IS closed Voltmeter needle swings (0 - 12V) when dnver's
%,de door tr opened SEL718D Voltmeter
STEERING LOCK SWITCH CIRCUIT
CHECK
1
2
Turn ignition switch to "OFF"
Check voltage between @ and @
Check from harness side
12V when ignmon key IS ret into key cyllndei OV when tgnltlon key 16 pulled out of key cylinder Voltmeter SEL7190
lamp does not go off nor come on
I + Go to "Power Supply Circuit Check" 1 1 OK 1 NG
Check harness for T c u
power supply circuit
Check belt warning circuit
OK NG
Check warning lamp
v
Check seat belt switch circuit
OK 1 NG
Check seat belt switch.
and harness between T c u
and seat belt switch
Replace T C U ~~
BELT
WARNING CIRCUIT CHECK
1 Unfasten seat belt.
2 Measure voltage across @I and @ when
ignition switch
is "ON"
Che& from harness ride
0 -12v Joltmeter needle keeps SwlngInQ appr~x 0-12Vl for about 7 ;econdr after ngnition witch Is Voltmeter :urned ON SEL720C
SEAT BELT SWITCH CIRCUIT CHECK
1 Turn ignition switch to "OFF"
2. Unfasten driver's seat belt.
3. Check for continuity between 0 and @
4 Fasten driver's seat belt
5 Check to determine if continuity does not
exist between 0 and @
Check from harness %de
Ohmmeter
SEL7211
EL-87

rn
0
I-
b
@
BODYGROUND IR H sidel
FUSE BLOCK
BODYGROUND (R H sidel
p
m@
I
REAR WIPER MOTOR
- BODYGROUND
I v
mm
(Main harness)
BODYGROUND - (Back %del
BODYGROUND
I
U I@> I (White L H ridel
WASHER (Engine room MOTOR harness1 -
BOCiY SE GROUND IL H %de)
SF models
GL
models
GLL models
Digital type meter
Needle type mete

HORN, CIGARETTE LIGHTER, CLOCK
Wiring Diagram
SEL729D
EL-92

AUTOMATIC SPEED CONTROL DEVICE (A.S.C.D.)
- Trouble-shooting (Cont'd)
AIT model only
0 When A S C D is set while vehicle is operating
in
"0 D " range, 0 D will be cancelled and
shifting to
0 D cannot be made thereafter
0 While vehicle is being driven using AS C D in
"0 D "range, 0 D will not be cancelled even
if actual car speed is 6 kmlh (4 MPH) lower
than
set speed (Set speed cannot be main-
tained
)
1 Check 0 D cancel circuit for AS C D control unit I
Replace A S C D 0 Electroniccontrolled A/T
control unit Check harness between
lock-up control unit and
AS C D control unit
Check harness between
0 D. cancel solenoid.
i) D. cancel switch and
AS C D control unit
0 Conventional Ail
I
ELECTRONIC-CONTROLLED A/T
EQUIPPED MODEL (E4N71B)
Turn ignition switch to "OFF".
Check continuity between @ and @
Check from harness slde . .~
ignmon switch - OFF
SEL737D Ohmmeter
CONVENTIONAL A/T EQUIPPED
MODEL (4N71B)
Turn ignition switch to "ON"
Turn 0 D. cancel switch to "OFF".
Check voltage @ -0 and 0-0
Check from harness side A '- b9ndt'~~n~~~~i~hO_N 0 Fihz L
Approx 12v ,I { .__. _- I .__.__.__.- -' Volmeter SEL741D
A.S.C.D. Actuator Check
1. Check continuity between terminal @ and
Continuity exist
... O.K.
terminals 0, @ and 0.
CAUTION:
Do
not attempt to remove valves from actuator.
2 Connect battery (approx 12V) to harness
connector
of actuator as shown below, and
apply vacuum to actuator
If diaphragm moves smoothly, actuator IS O.K.
CAUTION.
When checking actuator by applying vacuum, do
not apply engine vacuum directly
as it IS too strong
to check actuator properly.
LA s c D actuator B,m, 112VI
SEL739D
EL-I 02

LOCATION OF ELECTRICAL UNITS
hock absorber
Direction sensor
Lock-up mntrol unit (For electronic controlled automatic tranmisionl
(Only for Canada digital L------ type combination meter I ~UIDU~ madell
Fuel pump relay r,
(Rear side inner
SEL75ZD
EL- 1 05

@3 Fuse block
TOEFI H
A S C D control unit
To door harness
L H White)
To door harness L H (Blue)
To door harness L H (SF models) To 0 (Blue) (CLL models)
To
@ (White)
To @ (Non-turbocharger models)
. Clutch switch (A S C D ) . Stop switch (A S C D ) Stop lamp switch
Step lamp L H
Kickdown switch (A/T models)
Lightlng switch
Wiper switch
Horn switch
Key
lamp
ul
Cigarette hghter
Ash tray lamp
Step lamp R H
To @I (Blue)
To 0 Wite)
Flasher unit
Ignition switch
AS C D switch
Headlamp switch
Intermittent wiper tune
control
Steermg lock swltch
An conditioner harness
Au conditioner harness Au conditioner harness To 0 (Non-turbocharger models) To 0 (Turbocharger models) @ To @I (Black)
To @ (Blue) To @ (White) @ Tune control unit
TO door harness R H (ST models)
To door harness R H (CL and GLL models)
To door harness
R H (GL and GLL models)
@ . To @I (Blue) (GLL models)
@ Voice warning unit
I@
@J
To E P I harness (Non-turbocharger models)
To E P I harness