Power NISSAN 300ZX 1984 Z31 Electrical System Owner's Manual

TIME CONTROL SYSTEM
Trou ble-shoot
Check harness for T C U
power supply circuit
I Check rear defoaqer circuit I __
4 NG I OK
Check rear defogger relay,
and harness between
T C U
and rear defogger relay
/I Check defogger switch circuit
Check defogger switch.
and harness between
T C U
and defogger switch
Replace T C U
REAR DEFOGGER CIRCUIT CHECK
1 Turn ignition switch to ”ON”
2. Measure voltage across @ and @ while
operating rear defogger switch
Check from harness side
Ignition switch ON
&J Voltmeter
Apprm
12 V when rear defogger rwltch IS OFF
0 V when rear defogger switch IS ON
SEL7220
DEFOGGER SWITCH CIRCUIT CHECK
Check from harness ride
Ignition switch OFF OR when rear defogger switch IS ON Except OR when rear defogger smltch IS OFF
Ohmmeter
SEL723C
ig (Cont’d)
EL-88

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

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

LOCATION OF ELECTRICAL UNITS
LWarning chime Meter power unit (For digital
type combination
meter1
Hold relay (only for Canada
analog type
Clutch witch (For AS C D I
(For A 5 C D )
box
SEL753D
EL-I 06

Diode
L & GLLxodelr
TO ENGINE ROOM
H R H (HORN RELAY]
HRH
ITHEFT
WARNING RELAY-11
TO ENGINE ROOM
TO THEFT WARNING
CONTROL UNIT
TO HORN SWJ
TO BACK DOOR SW TOTHEFT WARNING 3TlME CONTROL UNIT CONTROL UNIT
TO ENGINE ROOM H R H ro INST H R H :DOOR WARNING LAMPI sw TOEFI H
TO LIGHT SW TO ENGINE ROOM H R H (POWER
STEERING SWI
TO INJECTOR BLOWER IFAN MOTOR RELAY)
(For theft warning system & E F I systeml
ode 6&
F model9
Not used
TOEFI H
TO ENGINE ROOM
HRH (POWER
STEERING SWI
TO LIGHT SW
TO FUSE
TO REAR
DEFOGGERRELAY
(For E F I system1 ode
TO TIME CONTROL
TO INST H
L H
TO ENGINE ROOM H
TO KEY SW UNIT
TO ENGINE ROOM H L H
(HEADLAMP MOTOR) (CHIME]
TO LIGHT SW
TO LIGHT SW IUPHOLD RELAY)
TO STEP LAMP TO DOOR SW R H
TO TIME
CONTROL UNIT
[For headlemp system & time control system)
Itode @
TO BACK DOOR ,LOCK SW
TO DOOR SW L H
TO DOOR SW R H
TO DOOR H LH
TO DOOR H
RH
TO VOICE WARNING UNIT AN0
TllEFT WARNING COhTROL UNIT
TO THEFT
WARNING
rCONTROL UNIT
TO BACK
DOOR SW
TO
DOOR SWRH
TO INST H R H (DOOR WARN-
ING LAMP)
TO TIME CONTROL UNIT
(Far voice warning system & theft warning system)
(Far theft warning system & tlme control system)
Turbocharger models
Nan turbocharger models
2+2 seater
2 seater
Door muror defogger swtch
A/T indicator lamp
RcmGlc
con1;a: miiiDi 8...itCh
0 D switch (AIT models)
Headlamp
cleaner switch
Shock absorber switch (Turbocharger models)
Body ground
Diode Diode
(Sf modcls)
Diode (GL and GLL models)
Diode (2+2 seater)
Theft warning control unit Seat belt switch R H (GLL models)
0, Sensor control amp (GLL models)
Parking brake switch
Radio amphfier
(GLL models)
Seal
bell switch L H (SF models) Seat belt switch L H (GL models) lo power seat harness (GLL models)
Body ground
(GLL models)
Didoe
(GL and GLL models)
Body ground (GLL models)
Body ground
(GLL models)
I