ignition CHEVROLET CORVETTE 1993 4.G Workshop Manual

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To Reset Your System:
1. Turn your ignition.lrey to Off or
Lock.
2. Pull the Courtesy Lights Fuse and
Radio Fuse .out of the- main fuse
panel for
one minute.
3. Put-the fuses back in and start your
vehicle. Your system shuuld be
working.
If you still have a problem,
see your deder,
.For
fuse location, see the Index under
Fuses E. CircuitBreakers and Fuse
.Panel.
Directional Controls
When the €allowing buttons are pressed,
an indicator light.
will glow above .the
button and the fan speed will go to
AUTO 3f unless you select a dBerent
speed. When the system is'changed
€rum
OFF tu any mode, the inside
temperature setting is displayed for
several seconds before the .outside
temperature is again displayed.
& (Maximum A/C): Use for
maximum cooling
or quick cool-down
on very hot days..
This setting will not
operate when outside temperatures are
below
40°F (5°C) I
-2 (Bi-Level): This setting lets air
inte the vehicle only through the
.heater and air conditioner outlets and
brings.the temperature
to the range
you choose. It controls the fan blower
speed by using t-he input signals.
Bi-Level al.so
defogs the side windows,
You can. override the,fan blower speed
by using
the V and A buttons.
a(Vent): In this setting, the
compressor
will not. mn. The-system
will adju-st
to the temperature you
choose, but it cannot cool the vehicle
to a temperature colder than the
outside air temperature, This setting

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Comfort Controls & Audio Systems
Directional Controls (CONT.)
also controls the fan speed
-automaticallyy, unless the fan is
overridden
by the 7 or A button.
'YJJ(Heater): In this setting, all air
coming into the vehicle. is forced to the
floor. The fan blower motor will vary
in speed unless yowpress the Vur A
button. The in-car temperature will
adjust to the setting you choose. The
air conditioning compressor will not.
run in the manual heater mode.
If .your vehicle has an
engine block
heater
and you.use .it during cold
weather,
UoF (-18°C) or lower, your
heating system will .more quickly
provide heat became the engine coolant
is already warmed. See the
Index under
Engine Bluck Heater.
44
(Defrost): With this setting,
mast
of the air is forced. through the
windshield defroster vents. The
cornpressor
runs by using all the input
signals. The fan blower also .goes to a
fixed
high speed with no delay. After
start-up you can override the High fan
blower speed by pushing or AUTO.
DEFOG: Press the and (@'
buttons at the same time to operate the
defog mode. This directs warmed air
through the windshield defroster
vents,
and through the heater ducts.
OFF: Press to turn off the system.
Rear Window Defogger
(COUPE AND HARDTOP CONVERTlBLE)
a (Rear Window Defogger) :Press
this button to warm the defogger grid
on the rear window and
warm the
power mirrors. The indicator light will
glow while the rear window defogger is
operating.
If you have a convertible,
you. will have the 4 (Power Mirror
Defogger) button .on your climate
control system. This button
is for
heated mirrors only. The -rear window
defogger
will turn:off automatically after.
about
10 minutes. of use, You can also-
turn the defogger
off by turning off the
ignition
or by pressing the @ button
again.

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Accessory Wiring Plug (CONTJ
This Wiring Plug has Three Separate
Wires:
The orange wire connects to the
battery.
The pink wire connects to the ignition
(power
is only available in the Run
position).
ground.
The black wire connects to the
When.using $he.accessory wiring
Don't splice wires -directly into
the
accessory plug wire. If done
incmrectly, splicing might cause
damage.to pur electrical system.
The maximum bad dany ' , .
electric,al,equipment..shauld.not
exceed I15 amps, . .
.Be sure to turn off any electricai
equipment when-not-in
use..
Leaving electrical equipment on
€or extended periods ..can drain
your battery.
electrical equipment
you're using
requires frequent connecting and disconnecting. This may
cause
excessive wear on the accessory
plug
and damage your eiectricai
system.
.plug:
Do not use this plug if the
Y3074
ietting the Clock
ietting the cloclc is easy.
, With the radio on or off and the
ignition on, press
SET. The SET
indicator light will glow for five
seconds.
!. You must begin to set the clock to
the correct hour and minute during
those five seconds. Set the clock
by
pressing the TUNE button. TUNE 7
will set the hour. TUNE A sets the
minute.

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IMjFM Stereo wjth Cassette
'layer
qOL/PROG/RCL Turns the unit on
md off when the ignition is on.
Idjusts volume up or down.
BAIJFADE: Turn the inside control
mob to adjust the sound from the left
:o the right speakers.
rum the control ring to adjust the
bund
from the front to the rear
;peakem.
Radio Controls:
The digital display indicates infomation
on time or radio stationfrequency, the
AM or FM radio band, whether the
station is
in stereo, and other radio
functions.
AMEM: Press this button to select
either the
AM or FM radio band. The
band
you select will be displayed on
the digital screen. The frequency of the
station
will be displayed, and if the
station is in stereo, the
ST indicator
will also be displayed.
RCL (Recall): Press to change
between the clock or the radio station
frequency displayed on the digital
screen.
AUTO: Press this button, then press
TUNE to tune to the next station on
the AM or FM band.
An indicator light above
a preset station
button
will glow when the seek mode
stops at that station.

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FF (Fast Forward): Press to advance
the tape rapidly; press again to play.
(The radio plays while the tape
is fast
forwarding.) The indicator light will
glow when this button is pressed.
REV (Reverse): Press to reverse the
tape rapidly; press again
to play. (The
radio plays while the tape is
rewinding.) The indicator light will
glow when this button is pressed.
CrO,: Press this button when playing
high bias chrome or metal tapes. An
indicator light will glow when this
button is pressed. When playing
standard tapes, press again.
PROG (Program) : Press to change
the side of the tape being played.
Arrows in the display will indicate the
side currently playing. The tape player
automatically begins playing the other
side
of the cassette when it reaches the
end
of a tape.
SRCH (Search): Press to search for
the next selection on the tape. There
must be at least a three-second gap
between selections on the tape
for this
function
to work. An indicator light
will glow when this button is pressed.
SCAN: Press to listen to the beginning
eight seconds
of each track or passage.
To stop scanning, press
SCAN again;
the indicator light will
go out and the
tape
will continue to play.
REPT (Repeat): Press to return to
the beginning
of the current selection
after
10 seconds or more of play. After
10 seconds or less of play, the player
will return to the beginning
of the
previous selection.
EJCT (Eject): Press to have the
cassette tape ejected (the radio will
then play). This button will also work
when the radio
or ignition are turned
Off.
STOPIPLAY: Press this to listen to
the radio without ejecting the cassette.

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AMIFIW Stereo wifh Cassette
Player (Delco-Bose@ Music
System)
VOL/PRBG/R@L: Turns the unit on
and o€€ when the ignition is on.
Adjusts volume up or down.
FADE: Adjusts the fronthear speaker
balance. There is no control
to adjust
for le€t/right speaker balance because
none is required.
Radio Controls:
The digital display indicates information
on time or radio station frequency, the
AM or FM radio band, whether the
station is in stereo,
and other radio
functions.
AM/FM: Press this button to select
either the
AM or FM radio band. The
band
you select will be displayed on
the digital screen. The frequency of the
station
will also be displayed, and if
the station is in stereo, the
ST
indicator will also be displayed. Your radio
has an AMAX-certified
receiver. It can produce quality
AM
stereo sound and receive C-Quam@
stereo broadcasts. AMAX reduces
noise
without reducing the high
frequencies you
need for the best
sound.
You don't have to do anything
to your Delco/GM radio because
AMAX is automatic.
RCL (Recall): Press to change
between the clock or the radio station
frequency displayed
on the digital
screen.
AUTO: Press this button, then press
TUNE to tune to the next station on
the AM or FM band.
An indicator light above a preset station
button will
glow when the seek mode
stops at that station.
'w
' ,- I
c
L,
R
'k

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AMIFM Stereo with Cassette
Player (Delco-Bose@ Music
System) ~conrr.)
FF (Fast Forward): Press to advance
the tape rapidly; press again to play.
(The radio plays while the tape is fast
forwarding.) The indicator light will
glow when this button
is pressed.
REV (Reverse): Press to reverse the
tape rapidly; press again to play. (The
radio plays while the tape
is
rewinding.) The indicator light will
glow when this button is pressed.
CrO,: Press this button when playing
high bias chrome
or metal tapes. An
indicator light will glow when this
button
is pressed. When playing
standard tapes, press again.
I54
PROG (Program): Press to change
the side
of the tape being played.
Arrows in the display will indicate the
side currently playing. The tape player
automatically begins playing the other
side
of the cass-ettg. W&n it xeahez, the
end
of a tape.
SRCH (Search): Press to search for
the next selection on the tape. There
must be at least a three-second gap
between selections on the tape for this
function to work. An indicator light
will glow when this button is pressed.
SCAN: Press to listen to the beginning
eight seconds
of each track or passage.
To stop scanning, press SCAN again;
the indicator light will
go out and the
tape will continue
to play.
.. --
REPT (Repeat): Press to return to
' the beginning of the current selection
after
10 seconds or more of play. After
10 seconds or less of play, the player
will return to the beginning of the
previous selection.
EJCT (Eject): Press to have the
cassette tape ejected (the radio
will
then play). This button wilI also work
when the radio or ignition are turned
off.
STOP/PLAY: Press this to listen to
the radio without ejecting the cassette.

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AMIFM Stereo with CassettelCD
Player (Delco-Bose@ Musk
System)
SCV/VOL: The inside lcnob turns the
unit on and
off when the ignition is on
and adjusts volume up or down.
SCV (Speed-Compensated Volume):
This three-position control ring will
automatically compensate for the
increase in road noise levels
at higher
speeds. At normal driving speed, set
the volume control
as desired.
Switching to
L (Low) or H (High)
causes the volume
to increase as your
speed increases.
The high position will give you a higher
maximum volume than the low
position. The
high position will also
increase the volume faster.
Use the low
position when driving with the roof
panel
on, or the convertible top up and
the windows closed. The high position
is best when driving with the roof panel
off, or the convertible top down and the
windows open.
SCV will be indicated
on the display when on. This feature
can be turned
off by turning the control
ring to the
OFF position.
FADE Adjusts the fronthear speaker
balance. There is
no control to adjust
for left/right speaker balance because
none is required.
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4
To Play ,a Cassette Titpe:
This audio system hits automatic
00- Dolby B NR@ to feduce-.baclground
hoke on' Dolby encoded tapes. .Dolby@
Noise Reduction is manufactured u.nder
license from Dolby Laboratorie's
Licensing Corporation.
Doby@ and the
011 symbol are trademarks uf Dolby
Laboratories Licensing Corporation.
Turn the VOL knob to turn the radio
-on. Then push a cassette into the
Cassette
entry door (the-tape side goes
in first). Do Bot use tapes:that are
longer..t€ian
45 minutes on each side.
FF (Fast Forward): Press to advame
-the-:tape, rapidly;. press again to play.
(The radio plays- while the tape is fsst
forwarding.) The indicator light will
glow when this button is .pressed.
.REV (Reverse-): Press to reverse the
-tape rapidly; press .again to play. (The
radio plays while the tape is
rewinding.)
The indicator light will
glow when this button is pressed.
CrO,: -Press. this button when playing
high bias
chrome or metal tapes. Ah
indicator light will glow when this
button-is
pressed. When playing
standard tapes, press again.
PROG (Program): Press to change
the side afthe tape being played..
Arkows- in the- display wiil .indicate the
side currently playing, The-tape player
automatically basins :playing the other
side ofthe cassette when it reaches the
end of a tape:
SCAN: Press this-to sample the
beginning
of eadh track or passage. An
indicator light will come on when the
button.
is, pres.sed. Press agtiih to stop
scanning-.
SRCH (.Search): Press to search €Or
the next select-ion on ihe tape. There
must be at
least a three-second :gap
between selections
on the tape for this
function to,
work. An indicaior light
will'glow when this. button
is presmi.
REPT (Repeat): Press to .return to the
beginnhg
of the current selection-after
10 seconds or more of play. After 10
seconds or 1,ess of pray, the player will
return to the beginning &he previous
selection.
EJCT (Eject): Press to have the
cassette tape ejected (the radio -wilJ
then play). This-button will also-work
when the radio
or ignition are turned
6ff.
STUP/PLAY Press .this to list-en. to
the radio without ejecting the cas'sette..

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COMP (Compres,sion): Pressing this
button makes soft -and
loud passages
more
,equal in volume. An indicator
light
will come on when the button is
pres-sed. Press again to resume normal
Play.
SCAN: Press this-to sample the
beginning
of each track or passage. An
indicator light will
come on when. the
button is pressed. Press again
to stop
scanning,
REFT (Repeat): Press to return to
the beginning of a selection aftex' 10
seconds or more of play. After 10
seconds or less of play, the player will
return to the beginning of the previom
selection.
When. Finished with the Compact
Disc Player:
If you rotate the SCV/V-OL hob to
OFF or turn. off the ignition, the disc
will stay in the player :and- start again
when
you turn on the ignition or power
switch, The disc will. begin playing at
the point where it had been stopped.
STOP/PLAY: Press to stop the disc
player; the radio
will play. Press again
to play the disc (the player will start
playing the disc where it was stopped
earlier).
EJCT (Eject) : Press to eject the disc;
the
radio will play. This button will
also work when the radio or ignitidn is
o€€. The disc will be automatically
pul1e.d
back into. the CD pl-ayer if it is
not. removed from the CD opening
after 30 seconds, when the ignitioni--s
off or the SCV/VOL knob is rotated to
OFF.
Undersfandjng-Radio Reception
FM Stereo
FM stereo will give you the best sound,
but
FM-. signals will reach only about 10
to 40 miles (16 to. 65 lm) . Tall buildings
or hills can interfere with
FM signals,
causing the sound tocome-and go.
AM
The range for -most AM stations, is
greater
than for FM, especially ahight.
The longer range, however, can cause
statbns to interfere with each other.
AM can also pick up noise from things
like: storms and power lines. To lower
this noise,
try reducing the-treble level.
159 8.