1984 NISSAN 300ZX fuel

HEADLAMP
0
0
Headlamp Motor Check
0 No
8 Yes
Use an ohmmeter to check for continuity in
headlamp motor circuit while rotating motor
with manual knob
CAUTION.
Prior to performing continuity test, disconnect
ground cable from battery.
Ohmmeter probe
Headlamp Continuity
Yes
No
Alqning mark for
for up posltlon
SEL652D
- Aiming Adjustment
When performing headlamp aiming adjustment, use
ail aiming machine, aiming wall screen or headlamp
tester For operating instructions of any airner, it
should be in good repair, calibrated and used ac-
cording to respective operation manuals supplied
with the unit
If any aimer is not available, aiming adjustment can
be done
as follows
For details, refer to the regulations in your own
country.
CAUTION:
a Keep all tires inflated to correct pressures.
b. Place vehicle and tester on
one and same flat
surface.
c See that there is no load in vehicle (coolant, en-
gine oil filled up to correct level and full fuel
tank) other than
the driver (or equivalent
weight placed in driver's position).
W~=l,ltO(4409I c 'L
-7
, - LO 1300 001
Of headlamps
UPper edge of Vertical centerline ahead of headlamps -x high tntenrw zone
Height of lamp centers I .- 100 141
100 (41 .-
L A
4.. I.. 100 1100 1001 loo (41 (41 / (41 (41
KLeft edge of high intensity zone
= ACCEPTABLE RANGE untt mm (in1
SEL914D
Adjust headlamps so that upper edge and left
edge
of high intensty zone are within the ac-
ceptable range as shown
in the figure above
Dotted lines in illustration show center of
headlamp.
EL-33

FUEL TANK GAUGE (Main1
'I
SI
01
74
I -0 I
A FUSE
__Izt___l

METER AND GAUGES - Digital Type Combination Meter
Trouble-st
Torque meter does not operate
1 Go to "Display Check" I
Go to "Power Unit Check"
v
Replace meter Replace
and gauge assembly power unit
I
I Check boost sensor circuit I
boost sensor and meter boost
sensor
1 Disconnect meter harness connector
2 Connect vacuum pump gauge to boost
3
4
(white)
sensor vacuum hose
Turn the ignition switch to "ON"
Apply vacuum pressure to boost sensor by
vacuum pump gauge and measure voltage
across
0 and
Vacuum -
~eep harness connected
J wu 1 3v at-53 3kPa 1-400 mmH
SEL667 Voltmeter -15 75 mHg) '
rg (Cont'd)
Main fuel gauge does not operate
I
Go to "Display Check"
Go to "Power Unit Check"
Replace meter Replace
and gauge power unit
assembly
Check fuel tank main gauge clrcult
I OK
Replace meter
and gauge
assembly Go to "Fuel tank
gauge check"
.
Check harness between Replace fuel
fuel tank gauge and meter
tank gauge unit
1 Disconnect meter harness Connector
(black)
Turn ignition switch to
"OFF" 2
3 Measure resistance between @ and @
e

Ohmmeter SEL6680
EL-49

METER AND GAUGES - Digital Type Combination Meter
Trouble-shooting (Cont'd)
Fuel residue
Sub fuel gauge (digital display1 does not operate
Go to "Display Check"
Go to "Power Unit Check"
Replace meter Replace
and gauge power unit
assembly
Resistance
Check harness
Check fuel tank sub gauge circuit
Go to "Fuel Tank
Gauge Check"
OK
v T
Replace Check harness between Replace meter
fuel tank fuel tank gauge and meter and gauge
gauge unit assembly
FUEL INJECTION PULSE CIRCUIT
CHECK
1 Disconnect meter harness connector
(black)
2. Turn ignition switch to "ON"
3 Check for voltage across @$ and 0.
Voimeter SE L669 t
FUEL TANK SUB GAUGE CIRCUIT
CHECK
1 Turn ignition switch to "OFF"
2. Measure resistance between 0 and 0.
Ohmmeter
Ignition switch- OFF
More than ZOQ Less than 4R
SEL670D
EL-50

METER AND GAUGES - Digital Type Combination Meter
Power Unit Check
Voltmeter
terminal
(f) (-)
E -
-%; 0
0
@I
__
@
9
0
0
Remove power unit with harness connected
Perform voltage and continuity tests Refer to
chart below
I Voltage
[VI
Approx 12
Approx 5
Approx 16
Approx 5
Approx 22
Approx 285
Turn ignition switch to "ON"
1 - 1 More than 6
Remarks
Check when no
display appears
For speedometer
For tachometer
For Temp,
Oil, Volt
sause
For Fuel gauge
For "Trip", "Ave
speed"
& "Dirt to
empty" meter
Turn ignition switch to "OFF"
Ohmmeter
Continuity Remarks
Check when no
ground display appears
If specified voltage or continuity is not produced,
replace power unit.
- Boost Sensor Check
1 Connect vacuum pump gauge to boost sensor
vacuum hose
2 Disconnect harness connector from boost
sensor and connect battery and voltmeter
as
shown
3 Apply vacuum pressure to boost sensor by
vacuum pump gauge and measure voltages
Approx.
2.2V at 0 kPa (0 mmHg, 0 inHg)
(Atmospheric pressure)
Approx.
1 3V
at -53.3 kPa (-400 mmHg, -15 75 inHg)
vacuum pump gauge
SEL674D
EL-53

METER AND GAUGES - Digital Type Combination Meter
Fuel Tank Gauge Check
For removal, refer to FE section
Ohmmeter terminal Float
Main gauge
Resistance value
Approx 10 - 20Q
Approx 480 - 520Q
Approx 100 - 1 1 OQ
Approx 4Q or below
Approx
870.930Q
Sub gauge
SEL675D
SEL676D
-Water Temp Sensor Check -
Cylinder head R H side
SEL677D
-Oil Pressure Sensor Check -
-
011 filter 7 \
SEL678D
Ohmmeter
terminal With engine With engine
stopped 1 running (idling)
ca On
+I;'''' I More than 74Q I Less than 60.Q
EL-56

METER AND GAUGES -Digital Type Combination Gauge
Trouble-shooting (Cont'd)
v
IGo to "Direction Sensor Amplifier Output Check" I
1 NG v
Check for loose harness
connector to
amplifier
Check for loose harness
connector to combmatlon
Replace combinatlon gauge Replace amplifier
I
1 Remove radio and AIC control assembly
from center console Remove combi-
nation gauge with harness connected
2. Turn ignition switch to "ON"
3 Check to determine if voltage IS produced
across
0 and @
SELSBSD
ACCELERATION & MILEAGE METERS
deceleration
Does speedometer operate?
1 No
Check harness between
combination gauge and
speed sensor Replace speed sensor
lNG
Replace combination gauge
Mileage meter registers "0" or abnormal value
I
Does speedometer operate?
Replace speed sensor
Check fuel injection pulse circuit for combination
gauge
I NG v
Check harness between
Replace combination
gauge combination gauge and
E F I control unit
IOK
EL-62

METER AND GAUGES -Needle Type Combination Meter
Combination Meter
pj
0, SENSO
35 36 31
1 TACHO-
METER
BBpgBW *Em 8EAR
FUEL BELT DOOR BRAKE CHARGE OIL RADIATO HEAD- STOP&
COOLANl LAMP TAIL LAMP
0 32 -- a: "E NATION 30
ILLUMI-
0 33 -U 18 19 20 s;14 15 5 23
24 2. 29 1 3 4 11
SEL690D
EL-65