light 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

STARTING SYSTEM -Starter-
1 Continuity test (between two segments side by
side)
IY Ohrnketer
a No continuity Replace
Insulation
test (between each commutator bar
and shaft) 2
EE022
a Continuity exists Replace
a Rough . Sand lightly with No 500 - 600
3 Check commutator surface
sandpaper
! Check
4 Check diameter of commutator
Commutator minimum diameter
Less than specified value Replace
29 mm (1 14 in)
vernier caliper
tJ \Cornmurator
SEL418A
5 Check depth of insulating mica from commuta-
tor surface
a Less than 0 2 mm (0 008 in) Undercut
to 0 5.0 8 mrn (0 020 - 0 031 in)
Undercut procedures
Round 0 5 -08 mm (0 020 0 031 in)
Correct
Commutator
incorrect EEOZI
EL-1 3

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

COMBINATION SWITCH
Intermittem WIPER
wimrvolume
WASH
TURN
Horn terminal RESUME
OFF
INT s
L
4
LO
HI
ASCD
LIGHTING SWITCH WIPER SWITCH INTERMITTENT
WIPER VOLUME AS C D SWITCH
HORN SWITCH
TURN
SIGNAL
SWITCH
-
SEL64ZD
EL-23

COMBINATION SWITCH
Replacement
Lighting switch, wiper & washer switch and
AS C D switch can be replaced without removing
combination switch base
Swtch base
Lighting switch
Washer swmh
A S C D sei switch SEL643D
To remove combination switch base, remove base
attaching screw and turn after pushing on
it
Attaching screw
Protrusion gu!dei
Hole
SEL644D
EL-24

HEADLAMP
Operation
0 The following chart depicts the operational modes of relays and headlamp motors in relation to the posi-
nons
of the headlamD and retract switches
Light switch
Retract switch
Mal”
Dimmer Headlamp
Uphold relay
Headlamp relay
Pasrlng relay
Headlamp mofor
Parsing -2ND 7 Main
nn
1 ST
I I I
I I I I I , I , , 1 I 1 I , I I OFF 1 1 I I I I 1 I I OFF I I 1 I I I I I I II I I
UP
II 111
I
Ill I I I !
I j ON
I I
I ON
I I I I
I
OFF I
I I
I I I 1 I I1 1 I 1
I/ OFF
I I 1, I !I I OFF ~
I I UP DOWN
SEL743D
EL-26

HEADLAMP
Trouble-shooting
Check diodes
between light switch
and up hold relay
1 OK
Check harness
between headlamp
relay and headlamp
motor
headlamp motor When turning retract
switch to
"UP", do
headlamps open?
Check headlamp
Yes relay
Check headlamp
motor
Turn retract switch
to "DOWN"
between headlamp
relay and headlamp
motor
v
When turning light
r switch to "ZND", do
-No When turning light
switch to "OFF". do
headlamps close? ~
on, I headlampsopen? I I
Replace
headlamp
timer -.
-
I
(es
switch
Check up hold relay 1 I
lo
Check diodes
between light switch
and up hold relay
OK
between light switch
and headlamp motor
When turning light
switch to "PASSING", Replace headlamp
do headlamps open?
Headlamps do not close
F
(Turn light switch to "OFF"
c - No
When turning retract
switch to "DOWN",
do headlamps close?
I - Check headlamp relay
Yes
Check retract switch
Check headlamp
EL-30

EXTERIOR LAMP
-
Item
-
Headlamp
Au, iliary driving lamp
Front combination lamp
Front side marker lamp
Rear side marker lamp
Rear cornbination lamp
1-urn signal
StopITail
Elack-up
Lictme plate lamp
Interior lamp
Spot lamp
Rear (luggage) compartment
lamp
Door step lamp
Leg room lamp
-
-Stop and Tail Lamp Sensor Check,
0 Before checking, ensure that bulbs meet Wattage (W)
65,35
55
2718 34
34
2718
2718
27
40
10
a
34
5
2
soecif ications
STOP LAMP
Stop lamp switch on
Stop lamp on good order
stop lamp removed Approx 12 volts
Approx 2volt6
voltmeter
SEL170B
TAIL LAMP
Lighting switch on
Tad lamp mgood order
Tail lamp removed ~pprox. 12 vans
. Approx 2 volts
SEL1710
- Bulb Specifications
SAE trade
number
Hi3054
-
1157
158 158
1157 1157
1073
-
-
-
-
-
-
EL-37

METER AND GAUGES -Digital Type Combination Gauge
Trouble-shooting
(+)
v
Check power supply circuit for combination
gauge
(-1
l°K 1 NG
Replace combination gauge Check harness
Voltmeter terminal I Ignition switch position
Approx Approx
@ I 03 I OV I 12v ! 12v
Continuity exists @ I gK:d I
Remove radio and A/C control assembly from
center console and remove combination gauge
with harness connected
Check from harness rtde
SEL681D
Display illumination will not darken when light
1 switch is "ON"
I Check light switch circuit for combination gauge I
1 Remove radio and A/C control assembly
and remove combination gauge with har-
ness connected.
Turn ignition switch to
"OFF"
Turn light switch to "ON"
Measure voltage across @ and @
2
3
4
Ignition switch - 0
ht switch - ON
SEL682D L
EL-59

VOICE WARNING SYSTEM
Operational Check
Fuel level
I Condition I Voice Warning -~ ~
Item
Fuel level less than
1OP (2-5/8USgal, - “Fuel level is low’’
2-1/4 Imp gal) ~~
Left
door
Door switch L H is “ON“
(Left door is open)
ignition switch
“OFF” Light
Door switch L H is
”ON”
(Left door is open)
Lighting switch is “ON” “Lights are ON”
“Left door is open”
Speed switch is “ON”
Vehicle speed is more
than
10 km/h (6 MPH)
Door switch R H is
”Right door is open”
Parking brake switch Parking brake is “ON” ”Parking brake is ON”
e If rhe warning is not properly given under the above condition, go to “Trouble-Shooting”.
EL-78