1984 NISSAN 300ZX meter

WARNING LAMPS AND CHIME
Diode Check
Check continuity using an ohmmeter
Diode
is functioning properly if test results are
as shown below
--I+-- 11 ,- Diode
Ohmmeter
NO continuity
@
SEL700D
DIGITAL TYPE COMBINATION METER
Diodes for warning lamps are located on the
panel where warning bulbsare fitted
For bulb check
For brake warning
7f For door warning
Far door warning
For tail lamp warning
For radmtor warning
Far 0, sensor warning
Far headlamp warning For brake warning
SEL701D
-~
NEEDLE TYPE COMBINATION METER
Diodes for warning lamps are built into the
Combination meter printed circuit
7- For 0, sensor warning
BRAKE DOOR FUEL
For bulb check
LAMP
SEL70ZD
--Warning Chime Check
A
SEL875D
EL-75

VOICE WARNING SYSTEM
Schematic
I 12
DOOR STEP DOOR SWITCH
VOICE
GENERATOR
BRAKE PARKING WARNING LAMP BRAKE SWITCH FUSE - 1 19
FUEL WARN- FUEL TANK ING LAMP GAUGE UNIT
20 COMBINATION
METER lD8gc1al type) SPEED SENSOR
5v 18
I
7 COMBINATION METER (Needle type1
@ Dlgltal typemeter
@ Needle type meter
1
DOOR
SPEAKER
LH
I
__r_l RADIO
SEL703D
EL-76

VOICE WARNING SYSTEM
Trou ble-shooting
Voltmeter
Condition
1 Ignition sw "ACC"
Check if speaker in driver's door
produces sound wheri radio
is
turned "ON"
Ignition sw "OFF"
Normal
i
Check harness connector run-
ning to driver's door speaker
Lighting switch "ON"
Check voice warning switch
CNG>
More than 9V
Replace voice warning switch i
v
Disconnect connector running to voice warning device and check voltage
at each terminal of connector
I- I I
I OK T
Replace voice warning device
I NG i
Check harness
EL-79

rn I-
0
do
Left door Right door Parking brake Fuel level Light
OK (7) Check if step lamp
left or right door
is opened
Check door switch
I
I
lxeed % Sensor
Signal Check"
-1 (Refer to "METER I
Check if fuel
warning lamp
comes on when Check if parking
brake warning
lamp comes on
when parking
brake lever
is
pulled with
ignition switch
"ON"
NG
Check parking
brake switch Check fuel tank
gauge unit
(Refer to "METER
AND GAUGES")
Repair or
replace
AND GAUGES" )
v
Check for loose connector,
poor grounding
or broken wire
'""I
Repair or
replace
OK
Replace voice warning device
Check if all illumi-
nation lamps come
on when lighting
switch
is "ON"
Check lighting
switch

TIME CONTROL SYSTEM
Volwnetei terminals
- Preparation for Trouble-shooting -
1 Remove R H dash side cover and remove
blower motor
2 Remove time control unit with harness con-
nected
3 Connect main harness to instrument harness (if
disconnected)
Check from harness ride
Ignition switch pOIitiOn
harness connection SE L750D
I+)
-Power Supply Cercuit Check-
1-1 OFF ACC ON
@
@ 1 @ j ov 1 ov I Approx 17v
ov Approx Approx 12v 12v 0
Contlnult"
- Trou ble-shooting
intermittent wiper does not operate
4
I Go to "Power Supply Circuit Check"
OK NG
Check harness for T C U
power supply circuit
v
Check wiper relay circuit
OK NG
I Check wiDer relav I I
I
I 10 K ~NG
Check harness between Replace
T C U and wiper relay
Check wiper switch circuit check wiper relay
1 OK
I
Replace T C U Check wiper switch
Check harness between T C U Replace
and wiper switch
b
wiper switch
v
WIPER RELAY CIRCUIT CHECK
1 Turn wiper switch to "INT"
2 Turn ignition switch to "ACC"
3 Measure voltage across and 0
Check from harness ride
fTl7rFl
Wiper switch INT 0-12v lgnmon switch ACC
Needle shakes from 0 to 12V every 2 to 15 seconds
SEL708D
Voltmeter u
WIPER SWITCH CIRCUIT CHECK
1 Turn wiper switch to "INT"
2. Turn ignitionswitch to "OFF".
3 Check continuity between @ and @
Check from harness ride
Wiper switch INT
Ignition switch OFF
Ohmmeter
SEL709D
EL-83

TIME CONTROL SYSTEM
Trouble-shooting (Cont'd)
Intermittent time of wiper cannot be adjusted
Check intermittent wiper volume circuit
Check harness between T C U
and intermittent wiper volume
Replace
wiper switch
~~~_____ ~~ ~
1
2 Measure resistance between @J and @
Turn ignition switch to "OFF"
while turning intermittent wiper volume.
Check from harness side
Ignition switch OFF
0-1 kS2
Intermittent wiper knob
0 Rat S posmon
1 kR at L postiton Approx
Ohmmeter SEL710D
combination
Check washer switch circuit
I NG f
Replace T C U Check harness between
T C U and washer switch
1
2
3
Turn ignition switch to "OFF".
Turn washer switch to "ON"
Check continuity between @ and @
Check from harness side
lgnitjon rwrtch OFF
WASH
I
Ohmmeter SEL711D
EL-84

TIME CONTROL SYSTEM
Trouble-shooting (Cont'd)
(Interior lamp will not illuminate when outside door
handle
on driver's side IS pulled 1 I
Interior lamp and step lamps do not fade out after
all doors are closed
Check if door warning lamp goes off after all doors
are closed Check if interior lamp fades out after all doors
are closed
OK NG Check door switch
Go to "Interior lamp
circuit check" Go to "Power Supply Circuit Check"
OK NG
Check harness between
T C U and interior lamp
v
Check door handle switch circuit check
OK NG
Check door handle switch
Replace T C U Check harness between T c u
and door handle switch
NG
Check harness between
T C U and interior lamp
1
INTERIOR LAMP CIRCUIT CHECK
1 Turn Ignition switch to "OFF"
2 Measure voltage across @ and @
Check from harness ride
0 V when door 15 open 0- 12 V when
door IS closed after once opened
SEL7lZO
DOOR HANDLE SWITCH CIRCUIT
CHECK
1
2
3
Turn ignition switch to "OFF"
Pull outside door handle (driver's side)
Check continuity between @ and @
Check from harness sade
I OR
ye?! door handle (driver's rude)
SEL713D ohmmeter
EL-85

TIME CONTROL SYSTEM
Trouble-shooting (Cont'd)
BO
,@ @
Ohmmeter
Door key hole illumination does not come on even
if driver's side door handle
is pulled
I
illumination control switch
DARK BRIGHT
Except 0 R OR
Excepton OR
I Go to "Power Supply Circuit Check" I
Check harness for T C U
power supply circuit
, rK
Check key hole illumination circuit
I /OK I Check key hole illumination
Check harness between T C U
and key hole illumination
Go to "Door handle switch circuit check"
(Refer
to back oaqe 1
lNG Check harness between T C U
and door handle switch
l°K Replace T C U
1
2
3
Turn ignition switch to "OFF"
Pull outside door handle (driver's side)
Measure voltage across
0 and @
Check from harness side
Ignition witch OFF
After outside door handle Idrlver'r ride) 16 pulled and releared, voltmeter indicates OV for about 7 seconds and then 12V
Voltmeter
SEL714D
Illumination control system does not actuate
Check light switch circuit
T C U and light switch
Check illumination circuit
harness connector
Check illumination control circuit
control switch
LIGHT SWITCH CIRCUIT CHECK
Check from harness side
Ignition witch OFF Approx(i51j Light witch ON
u
SE L715C Voltmeter
ILLUMINATION CIRCUIT CHECK
Check from harness side
EL-86