NISSAN 300ZX 1984 Z31 Electrical System Owners Manual

WIPER AND WASHER
Headlamp Washer/Wiring Diagram
HEADLAMP
RELAY
WASHER HEADLAMP @
: (Back ride)
HEADLAMP
WASHER
SWITCH
7
- 22 I1 BODY GROUND IR H ride)
HEADLAMP
WASHER
BODYGROUND (L H $#de)
@ GLmodelr
@ GLLrnodelr
@ Digital type meter
@ Needle type meiei
BODY GROl (R H ride)
II fWhw
(Engine room harnerr)
I LIGHTING SWITCH
J
(Main harness)
USE
7/1
w
II
IGNITION SWITCH I ACC or ON
I I
SEL727D
EL-91

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

REAR WINDOW DEFOGGER
Wiring Diagram
REARDEFOGGER
.L modald
SEL730D
Filament Check
1 Attach probe circuit tester (in volt range) to
middle Dortion
of each filament
l+l [-I
6 volts inormal filament) SEL263
2 If a filament is burned out, circuit tester
registers 0 or 12 volts
Burned out point
i+l i (-1 .. .
12 Volts SEL264
r+i I-]
SEL265 0 volts
EL-93

REAR WINDOW DEFOGGER
Filament Check (Cont'd)
3 To locate burned out point, move probe to left
and right along filament to determine point
where
tester needle swings abruptly
/AI 1-1
SEL266
Filament Repair
REPAIR EQUIPMENT
1 Conductive silver composition
(Dupont No 4817 or equivalent)
2 Ruler, 30 cm (1 1 8 in) long
3 Drawingpen
4 Heatgun
5 Alcohol
6 Cloth
REPAIRING PROCEDURE
1 Wipe broken heat wire and its surrounding area
clean with
a cloth dampened in alcohol
2 Apply a small amount of conductive silver
composition to tip of drawing pen
Shake silver composition container before use.
3. Place ruler on glass along broken line. Deposit
conductive silver composition on break with
drawing pen Slightly overlap existing heat wire
on both sides [preferably 5 mm (020 in)] of
the break.
Funit Drawmg pen Ruler mm (In]
BE540
4 After repair has been completed, check re-
paired wire for continuity This check should
be conducted
10 minutes after silver composi-
tion
is deposited
Do not touch repaired area while test is being con-
ducted
r point
SEL0120
5 Apply a constant stream of hot air directly to
the repaired area for approximately
20 minutes
with
a heat gun A minimum distance of 3 cm
(1 2 in) should be kept between repaired area
and hot
air outlet If a heat gun is not available,
let the repaired area dry for 24 hours.
Repaired Point
Heat gun
SEL0130
EL-94

AUDIO AND POWER ANTENNA
Wiring Diagram
SEL731 ID
EL-95

AUDIO AND POWER ANTENNA
Power Antenna Motor Check
1 Disconnect, at connector, harness between
power antenna unit and antenna timer.
2 Apply 12-volt battery voltage across @ and
@ to make Sure antenna rod extends and
retracts
3. Connect a voltmeter across terminal 0 and
ground terminal
of battery.
4 Check to determine if voltmeter varies between
0 and 12 volts (approx ) in relation to move-
ment
of antenna rod when 12-volt battery
voltage
IS applied across @ and @
If above test results are not satisfactory, re-
place antenna
motor.
SEL732D
Radio Fuse Check
SEL733D
EL-96

L6-13
L
T

AUTOMATIC SPEED CONTROL DEVICE (A. S. C. D.)
Wiring Diagram
L
.I .. I .-
i' I
:- .I
I I
- !
I
.-
SEL735D
EL-98

AUTOMATIC SPEED CONTROL DEVICE (A.S.C.D.)
-Preparation for Trouble-shooting Trouble-shooting
Remove AS C D control unit with harness AS C D control unit cznnot be set properly connected. I
Turn AS C D main switch "0FF"and then "ON"
to make sure indicator (located above combination
meter1 illuminates
Check for loose vacuum Check AS C D main
[-I switch and AS C D relay
Check power supply circuit for
A S C D control
unit SEL736D
Check stop switch. clutch
switch (MIT model).
inhibitor relay and
inhibitor switch (AIT model) POWER SUPPLY CIRCUIT CHECK
1 Release brake and clutch pedals
2 Turn ignition switch to "ON"
3 Turn A S.C.D main switch to "ON"
4. Check voltage between 0 and @ v Check harness between
AS C D power supply Check from harness side
-+ Release
A/T control -+ ..D" range
AS C D main wnch }-ON IOK Checksets:and
harness between control
unit and
set switch Voltmeter SELSlOD
SET SWITCH CIRCUIT CHECK
1. Turn ignition switch to "OFF". Go to "A S C D Actuator Check" -
2 Push A.S.C.D. set switch
3 Check continuity between 0 and @
Check from harness side
tion switch 4 OFF
C 0 ret switch + ON
SELBllD Ohmmeter
I
circuit
I Check set switch circuit for AS C D control unit 1
lNG Replace actuator !OK *
(Next page)
EL-99

AUTOMATIC SPEED CONTROL DEVICE (A.S.C. D.)
Trouble-shooting (Cont'd)
Turn ignition switch to "OFF"
Disconnect speedometer cable from trans-
mission
Connect an ohmmeter between
@ and
Slowly turn speedometer cable pinion by
hand to make
sure ohmmeter pointer
deflects
Ohmmeter pointer deflects twice per
rotation
of pinion.
0.
Check from harness side
Ohmmeter SEL7630
i
Check speed sensor circuit
(Digital type combination meter) -
(Refer to "METER AND GAUGES
- Needle Type Combination Meter"
~~~l~~~ AS c D
control unit
Check harness between A S C D
control unit and speed sensor
signal output terminal
of
combination meter
Does speedometer operate properly?
Go to "Speed Sensor Signal Check"
for checking combination meter
(Refer to "METER AND GAUGES
- Digital Type Combination Meter" )
Replace
speed sensor Check harness between AS C D
control unit and speed sensor
signal output terminal of
combination meter
EL-I 00