Rear NISSAN 300ZX 1984 Z31 Electrical System Workshop Manual

ELECTRICAL SYSTEM
I
SECTION EL
CONTENTS
HOW TO READ DIAGRAMS
STANDARDIZED RELAY
POWER SUPPLY ROUTING
BATTERY.
.. ..
STARTING SYSTEM .
STARTING SYSTEM -Starter -
CHARGING SYSTEM .
CHARGING SYSTEM - Alternator
COMB IN AT1 ON SWITCH
INSTRUMENT SWITCH
HEADLAMP
EXTERIOR LAMP,
INTERIOR LAMP
.
..
..
..
..
..
... ......
..
.. ....
..
.. ...
EL- 2
EL- 3
EL- 4
EL- 6
EL- 9
EL-
10
EL- 15
EL- 17
EL- 23
EL- 25
EL- 26
EL- 34
EL- 38
METER AND GAUGES - Digital Type Combination Meter . . EL- 41
METER AND GAUGES - Digital Type Combination Gauge . .. .. EL- 57
METER AND GAUGES - Needle Type Combination Meter .. . EL- 65
METER AND GAUGES
- Needle Type Combination Gauge.. .... EL- 68
WARNING LAMPS AND CHIME. .......... ... .... EL- 71
VOICE WARNING SYSTEM
... ... EL- 76
TIME CONTROL SYSTEM ... EL- 81
WIPER AND WASHER .... .... ... ... . EL- 89
HORN, CIGARETTE LIGHTER, CLOCK . . ......... EL- 92
REAR WINDOW DEFOGGER
... .. ... ....... EL- 93
AUDIO AND POWER ANTENNA
,. . .... .. . EL- 95
AUTOMATIC SPEED CONTROL DEVICE (AS
C D ) . ... , . EL- 97
LOCATION OF ELECTRICAL UNITS
... .. .. .. EL-104
HARNESS LAYOUT
. . .. .. .. . EL-107

HOW TO READ DIAGRAMS
I
POWER SUPPLY ROUTING
This diagram is helpful in identifying specific prob-
lems
in the power supply portion of the electrical
circuits. For example, let's say
a vehicle has an in-
operative
rear window defogger A quick check
proves that meter and
gauges in the vehicle are
operative The power supply diagram shows that
there cannot be
a problem between the battery,
ignition relay, ignition switch or fuse since the
power supply circuit for the
rear window defogger
Example
BRANCH M/T model
AlT model
n
@ M/Tmodel
@ AITmodel
t
ABBREVIATIONS
is common with the meter and gauges. Therefore,
the cause of this specific problem must
lie past the
fuse, such
as in the wiring, rear window defogger,
or ground.
WIRING DIAGRAM
This diagram identifies types and number of con-
nectors, electrical
terminal positions in the connec-
tor, color coding of wires, and connector codes
Refer to the following example
CONNECTOR This shows that there connectors are white 6 terminal pin-type connectors
Pin-type connector (Male)
(Female)
(Male)
(Female)
833 Piaan-type connector
gg Piatn-type connector
POWER This shows the tgni tion witch ~osition ~n which the system can be operated For deiailr, refer 10 POWER SUPPLY
A r
I
1 v SWITCH ., , ,-,. -..,m I This shows that conti-
u
f
L-
WIRE COLOR CODING
This number IS !dentical with the one of the HARNESS LAYOUT This show where the mnnenor
CarON I nutty exists between termmels @ and 0, when the switch 16 turned 10 ON rmition
B W R
BR =Brown = Black OR =Orange =White =Red P =Pink G =Green PU =Purple L =Blue GY =Gray Y =Yellow SB =Sky blue LG = Laghi Green
In case of color coding using a Stripe Bare Color IS given fmt. followed by the Stripe Color
Example LIW = Blue with White Stripe
EL-2

STARTING SYSTEM -Starter-
Minimum length of brush mm (In)
Reassembly
11 10431
Carefully observe the following instructions
a. Apply grease
to:
Rear cover metal
Gear case metal
Frictional surface of pinion
Plunger of magnetic switch
Moving portion of shift lever
With pinion driven out by magnetic switch, push
pinion back to remove slack and measure dif-
ference
"2" between the front edge of the pinion
and the pinion stopper.
Difference "P":
0.3 - 1.5 mm (0 012. 0.059 in)
"Q" 4+
SEL497D
Not in the specified value Adjust by dust
cover (Adjusting plate).
SEL5738
- Service Data and Specification-
- Applied model I A1 1
Less than 100 -
I Revolution rpm I Mare than 3.900
I More than 29 (1 141 Outer diameter of commutator mm (in1
157 196
1 116 20.35-44) Brush spring tension N (kg. Ibl
mm(in1 1 03-1510012-00591 Difference P" in height
of pinion assembly
EL-I 4

CHARGING SYSTEM
Make sure "S ' termmal 8s con- IC-RG IC regulator
When reaching "Damaged
A C G.", remove
0 K. IC-alternator 16 In good condltlon nected COrreCtly
Trouble-Shooting
Before conducting an alternator test, make sure that the battery IS fully charged A 30-Volt voltmeter and
suitable test probes are necessary for the test The alternator can
be checked easily by referrmg to the
Inspection Table
Engine tdltng Lighting $witch "ON,, (Check light for operatlonl
WITH IC REGULATOR
bulb Replace and Proceed -
Wpth alternator side L terminal grounded, internal short occurs when + diode IS short-circuited @
Ignition witch "ON" cOnneCtor IS. (Check light Ll and ground for operatton1 L lead w~re Connect con-
I lH,TACHl nector IS LI far operation1 and ground F
I [Check Itght I for operation1
I (MITSUBISHI ' makel I - - - - - - - - - - - - -------- -
J
..........................
Contact poiitwe lead (+I of voltmeter on B
Lqht "OFF"
9
Engine speed 1,500 rpm
terminal and negative lead (-1 to L terminal
(Measure the "oltage acres "E" and "L"
only)
Contact tip of wlre with brush and attach wire to
alternator body -0 Light"0FF" -- OK
5) Terminals "S", "L", "BAT" and "E" are marked
on rear cover
of alternator.
Brush lift wire
SEL766D
EL-1 6

CHARGING SYSTEM -Alternator-
Construction
A2T48195 (MITSUBISHI make) Through-bolt m39 541040-055.29 401
,- Front cover r I
- ~ear~ng retainer
- Diode assembly 16 0.7 5,43 54)
("1 N m lkg-rn. it-lbl
SEL625D
*Rear bearing
CAUTION. Rear cover may be hard to remove because
a ring is used to lock outer race of rear bearing Be careful not to
lose this ring during removal.
LR170-701B (HITACHI make)
(4 0 -6.0, 29.43) n 39 59
("1 N m Ikg-m, ft-lbl
Dlodt, assembly SEL626D
EL-I 7

____ ____
CHARGING SYSTEM -Alternator-
Removal
Remove bolts from alternator
Remove bolts for front stabilizer
Manually
move stabilizer down and remove
alternator
SEL627D
Disassembly
CAUTION.
Rear cover may be hard to remove because a ring
IS used to lock outer race of rear bearing To facili-
tate removal of rear cover, heat just bearing box
section with
a 200-wan soldering iron
Do not use a heat gun, as it can damage diode
assembly.
SEL628D
Rotor Slip Ring Check
1. Continuity test
Ohmmeter
SEL629D
No continuity Replace rotor
2. Insulator test
Ohmmeter
IWI
SEL630D
Continuity exists. Replace rotor.
3. Check slip ring for wear.
Slip ring minimum outer diameter.
21.6 mm (0.850 in) [HITACHI makel
22.4
mm (0.882 in) [MITSUBISHI makel
EL-I 8

CHARGING SYSTEM -Alternator-
Reasi
Carefully observe the following instructions
1 When soldering each stator coil lead wire to
diode assembly terminal, carry out the opera-
tion
as fast as possible
2 When soldering brush lead wire, observe the
following
Position brush so that its wear limit line
protrudes 2 mm (0 08 in) beyond end face
of brush holder
Solder points
SEL6320
3 Fit ring into groove in rear bearing so that it is
as close to the adjacent area as possible.
Quantity of prorrusion FIX ring at the position of minimum protrusion
mbly
4 Before installing front cover with pulley and
rotor with
rear cover, push brush up with
fingers and retain brush, by inserting brush
lift
into brush lift hole from outside
After installing, remove wire for brush
lift
EE540
EE541
5 After installing front and rear sides of alter-
nator, pull brush lift by pushing toward center
Do not pull brush lift by pushing toward outside
of cover as it will damage slip ring sliding surface.
EL-21

INSTRUMENT SWITCH
p7J-q
INSTRUMENT
RETRACT
SWITCH
HAZARD
SWITCH
E:EGGER SWITCH
OFF
[WJ]
-'+ Dark N (For ASC D switch)
(Far illuminafion
control swifchl
HAZARD RETRACT SWITCH SWITCH
ASCD MAIN
SWITCH
I LLUMlNATlON
CONTROL SWITCH
BRIGHT DARK
El
INSTRUMENT SWITCH R.H.
m
REAR WIPER
&WASHER
SWITCH
RE4R
DEFOGGER
SWITCH REAR WIPER
&WASHER SWITCH
AUXILIARY DRIVING
LAMP SWITCH
For removal, refer to "INSTRUMENT" in BF section
EL-25

FUSE
BLOCK
r
BATTERY
Ll-J
I I
BODY GROUND
SIDE MARKER IR H ridel LAMP R H BODYGROUND
FRONT COMBINATION L/Y-
LAMP R H L/OR -
@ STOP LAMP SWITCH
CLEARANCE
BODY GROUND
CLEARANCE
BODY GROUND
(L H ridel
CLEARANCE
(Engine room harness1
IWhm
-R/G-
FRONT COMBINATION
LAMP L H
b VI w 0
SIDE MARKER
LAMP L H
TAIL AN0 STOP
LAMPSENSOR
0 SFmodelr
@ GLrnodelr
@ GLLrnodelr
@ Digital type meter
@ Needle type meter
L H ride1
mm
BODYGROUND
(L H ridel
LICENSE
LAMP
REAR COMBINATION
LAMP L H
STOP
TAIL
R /G
REAR SIDE
MARKER LAMP L H

EXTERIOR LAMP
Auxiliary Driving Lamp/Wiring Diagram
Back-up Lamp/Wiring Diagram
BODYGROUND (R H $idel
1 FUSEBLOCK -
REAR COMBINATION
LAMP R H IMsin hsmenl
IWh8te R H ridel
lEng8nc rubharnenl @ Non WrMcharger models @ BODY GROUND qCL H sidel - INHIBITOR WITCH SEL655D
EL-35