Service Manual - Page 79

For 1987 300ZX.

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METER AND GAUGES
-
Digital Type Combination Meter
0
Power Unit Check
Remove power unit with harness connected.
0
Perform voltage and conttllulty
tests
Refer to
chart below
Approx
23
SELlSBJ
Turn ignition switch to
"ON"
Voltmeter
I
4
ri
Check when no display
0
Approx
22
appears
@
Approx
26
For speedometer, fuel,
information, tachometer
I
I
Approx
19
I
Fortemp,trip
~
Turn ignition switch to
"OFF".
Olimmeter
I I
Continuity Remarks
I
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
1
ZV
EL-79
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