battery CHEVROLET DYNASTY 1993 Service Manual

(4) Remove two retaining screws and pull fuel
gauge straight back. (5) For installation reverse above procedures.
TEMPERATURE GAUGE REPLACEMENT
(1) Remove instrument cluster bezel (Fig. 7).
(2) Remove mask and lens.
(3) Remove two retaining screws and pull temper-
ature gauge straight back. (4) For installation reverse above procedures.
VOLTMETER REPLACEMENT
(1) Remove instrument cluster bezel (Fig. 7).
(2) Remove mask and lens.
(3) Remove three speedometer retaining screws
and pull the speedometer straight back and set aside. (4) Remove two voltmeter retaining screws and
pull voltmeter straight back. (5) For installation, place voltmeter on gauge pins
and push until gauge is securely seated in cluster
and reverse above procedures.
TACHOMETER REPLACEMENT
(1) Remove instrument cluster bezel.
(2) Remove mask and lens.
(3) Remove three retaining screws and pull ta-
chometer straight back. (4) For installation, place tachometer on gauge
pins and push until gauge is securely seated in clus- ter and reverse above procedures.
TACHOMETER CIRCUIT TESTING
(1) Remove cluster.
(2) Check for battery voltage at cavity J if instru-
ment cluster gray connector. (3) With the ignition in the ON position, check for
battery voltage at cavity K of the instrument cluster
gray connector (Fig. 8). (4) Check cavity F of the instrument cluster red
connector for continuity to ground (Fig. 8). (5) Check for tachometer signal from the power-
train control module by connecting an AC DIGITAL
VOLTMETER to cavity H of the instrument cluster
gray connector and ground. A reading of at least 1.0
volts should be present with the engine running. (a) If voltage is within specification, go to step 7.
(b) If voltage is NOT within specification, per-
form steps 5 and 6.
(6) If there is less than 1.0 volts at cavity H check
for continuity between cavity H of the instrument
cluster and pin 43 of the powertrain control module
connector (Fig. 12). Also, check the connector at the
powertrain control module for damaged pins or ter-
minal push outs. (7) If voltage is less than 1.0 volts at cavity H and
there is continuity between cavity H of the instru-
Fig. 11 Gauge Resistance
8E - 64 INSTRUMENT PANEL AND GAUGES Ä

HEATER CONTROL LAMP REPLACEMENT
(1) Remove heater control. Refer to A/C Heater
Control for removal. (2) Pull control far enough to gain access to the
lamp socket. (3) Replace lamp. To remove lamp rotate socket
counter clockwise. To install rotate clockwise. (4) For installation reverse above procedures.
A/C CONTROL LAMP REPLACEMENT
(1) Remove heater control. Refer to A/C Heater
Control for removal. (2) Pry temperature and blower switch knobs off
with flat blade tool. To protect cosmetic face place
cardboard or similar material on the face plate while
prying. (3) Remove face plate by lifting on the six tabs.
Three on top and three on bottom of the face plate. (4) Replace lamp.
(5) For installation reverse above procedures.
HEATER CONTROL BLOWER SWITCHREPLACEMENT
(1) Remove heater control. Refer to A/C Heater
Control for removal. (2) Pry temperature and blower switch knobs off
with flat blade tool. To protect cosmetic face place
cardboard or similar material on the face plate while
prying. (3) Remove face plate by lifting on the six tabs.
Three on top and three on bottom of the face plate. (4) Pry blower switch off with flat blade tool. To
protect cosmetic face, place cardboard or similar ma-
terial on the face plate while prying. (5) To replace, line up blower switch terminals and
press firmly until the it bottoms out on the housing. (6) For installation reverse above procedures.
A/C CONTROL BLOWER SWITCHREPLACEMENT
(1) Remove heater control. Refer to A/C Heater
Control for removal. (2) Position the temperature knob at the maximum
heat position to gain screw access. (3) Remove two screws holding the blower switch
located on top of the control. (4) Pry the blower switch off with a flat blade tool.
(5) To replace, line up blower switch terminals and
press firmly until the it bottoms out on the housing. (6) For installation reverse above procedures.
GLOVE BOX MODULE REPLACEMENT
(1) Disconnect battery negative cable and isolate
or remove fuse #13 prior to removing switch or wires
may short to ground. (2) Open glove box door (Fig. 23).
(3) Remove check strap screws to allow full down-
ward movement of the glove box door. (4) Remove six screws attaching glove box module
to instrument panel. (5) Pull glove box module rearward and disconnect
wiring from lamp and switch. (6) Remove glove box from vehicle.
(7) For installation reverse above procedures.
When installing glove box module, be sure that left
edge of module is pressed against foam bead on trim
pad. This will assure that there will be an adequate
gap between right edge of glove box door and trim
pad.
ASH RECEIVER ASSEMBLY REPLACEMENT
(1) Open ash receiver and remove center module
bezel. (2) Remove ash receiver bracket to instrument
panel retaining screws (Fig. 23). (3) Pull assembly rearward off of locating pins and
disconnect wiring for lamp. (4) Remove ash receiver from vehicle.
(5) For installation reverse above procedures.
Fig. 22 A/C Heater Control
Fig. 23 Glove Box, Ash Receiver and Cigar Lighter
Ä INSTRUMENT PANEL AND GAUGES 8E - 69

CIGAR LIGHTER REPLACEMENT
(1) Remove center bezel assembly (Fig. 23).
(2) Remove center module lower cover or open for-
ward console lid. (3) Unscrew lighter receptacle shell from recepta-
cle and remove from base instrument panel. (4) Disconnect wiring connectors from lighter re-
ceptacle and remove from vehicle. (5) For installation reverse above procedures.
REAR WINDOW DEFOGGER AND/OR FOG LAMP SWITCH REPLACEMENT
(1) Remove center module bezel assembly (Fig. 20).
(2) Remove two switch bezel screws (Fig. 24).
(3) Pull switches and bezel rearward and discon-
nect wiring connector. (4) Remove two switch retaining screws.
(5) Remove switch from bezel.
(6) For installation reverse above procedures.
INTERMITTENT WIPE MODULE REPLACEMENT
(1) Remove lower steering column cover.
(2) Slide intermittent wipe module off of bracket
located on steering column reinforcement (Fig. 25). (3) Disconnect wiring connector from module and
remove module from vehicle. (4) For installation reverse above procedures.
GLOVE BOX LAMP AND SWITCHREPLACEMENT
(1) Disconnect battery and/or pull fuse # 13 before
starting removal procedure. (2) Open glove box door (Fig. 26).
(3) Carefully pry lamp from its mounting surface
with tip of a small screwdriver. (4) Pull lamp from box and disconnect electrical
leads. (5) Remove lamp.
(6) For installation reverse above procedures.
CONSOLETTE ASSEMBLY REPLACEMENT
(1) Remove shifter handle.
(2) Unsnap transmission range indicator bezel or
shift boot bezel from consolette, disconnect wiring
and remove bezel assembly (Fig. 27). (3) Remove two screws from side of armrest.
(4) Remove four caps which cover attaching
screws. (5) Remove four attaching screws.
(6) Lift consolette up and over shift mechanism to
remove. (7) For installation reverse above procedures.
Fig. 24 Rear Window Defogger and Fog Lamp Switch
Fig. 25 Intermittent Wipe Module
Fig. 26 Glove Box Lamp and Switch
8E - 70 INSTRUMENT PANEL AND GAUGES Ä

(2) Pry cover up and forward until released from
instrument panel pad. (3) Lift top cover upward and rearward to remove
from vehicle. (4) For installation place top cover on panel open-
ing. Be certain that blades of top cover are located in
the retaining spring clips. (5) Push forward and down to engage in pad.
INSTRUMENT PANEL REPLACEMENT
CAUTION: Disconnect negative battery cable, in en-
gine compartment, before servicing instrument
panel.
(1) Remove windshield wiper arms.
(2) Open hood and remove cowl top plastic cover.
(3) Remove windshield washer reservoir.
(4) Pull connector loose from the A/C resistor block
and push wiring and grommet through bulkhead into
passenger compartment. (5) Remove the console/consolette assembly.
(6) Remove the passive restraint seat belt logic
control module wiring. (7) Remove six attaching nuts securing the instru-
ment panel to console support brace. (8) Remove the instrument panel to console sup-
port brace with the Air Bag System Diagnostic Mod-
ule attached. (9) Remove right and left cowl side and scuff plate
trim moldings. (10) Remove left and right A-pillar trim moldings.
(11) Remove instrument panel top cover (Fig. 28).
(12) Remove lower steering column cover.
(13) Disconnect the steering column wiring at the
25-way connector. (14) Disconnect park brake, stop lamp and speed
control wiring. (15) Remove five steering column support nuts and
lower steering column. Then remove two steering col-
umn attaching studs. (16) Disconnect engine harness wiring at 18-way
and 16-way connectors located on the left side panel
support bracket. (17) Remove glove box assembly.
(18) Remove the panel top cover assembly.
(19) Loosen the panel roll-down pivot bolts.
(20) Remove the defroster duct adapter from de-
froster duct. (21) Remove screws which attach instrument panel
to windshield fence line. Roll panel down, attach
heavy wire to hold in position and remove defroster
duct retaining screws. (22) Disconnect body wiring at the right side
18-way connector and left side 25-way connector. (23) Disconnect temperature mode cable at in-line
connector. Disconnect resistor block and blower mo-
tor wiring connectors.
Fig. 28 Instrument Panel and Top Cover
8E - 72 INSTRUMENT PANEL AND GAUGES Ä

AUDIO SYSTEM
CONTENTS
page page
ANTENNAS ............................ 20
COMPACT DISC PLAYER ................. 30 RADIOS
................................ 1
SPEAKERS ............................ 24
RADIOS INDEX
page page
Audio Diagnostic Test Procedures ............. 1
Description .............................. 1
Interference Elimination ..................... 1
Radio Removal AP Body Replacement ........ 19 Radio RemovalÐAA Body
.................. 18
Radio RemovalÐAC and AY Bodies .......... 18
Radio RemovalÐAG and AJ Bodies .......... 18
DESCRIPTION
For operation of the factory installed standard and
optional radios and the optional compact disc player,
refer to the Sound Systems Operating Instructions
Manual supplied with the vehicle. All vehicles are equipped with an Ignition-Off
Draw Connector which, is used when the vehicles are
originally shipped from the factory. This connector
which, is located near the battery, helps to prevent
battery discharge during storage. For specific connec-
tor type and location, refer to Group 8W, Wiring Di-
agrams. This connector is included in the radio memory cir-
cuitry and should be checked if the memory of time
or radio station programming is inoperative.
INTERFERENCE ELIMINATION
Some components are used on vehicles equipped
with a radio capacitor, to suppress radio frequency
interference/static. Capacitors are mounted in various locations, on the
generator either internal or external, internal to the
instrument cluster, and internal to the windshield
wiper motor. Ground straps are mounted from radio chassis to
instrument panel support structure, engine to cowl,
across engine mount on right hand side. On vehicles
with air conditioning there is a strap from evapora-
tor valve to cowl. These ground straps should be se-
curely tightened to assure good metal to metal
contact. Ground straps conduct very small high fre-
quency electrical signals to ground and require clean
large surface area contact. Radio resistance type spark plug cables in the high
tension circuit of the ignition system complete the in-
terference suppression (Fig. 1).
If radio noises are evident, be sure the capacitor
lead wires are making good contact on their respec-
tive terminals and are securely mounted. Faulty or
deteriorated spark plug wires should be replaced.
AUDIO DIAGNOSTIC TEST PROCEDURES
Whenever a audio malfunction occurs, first verify
that the radio wire harness is properly connected to
all connectors before starting normal diagnosis and
repair procedures. Refer to Audio Diagnostic Charts
and/or Radio Connector Circuit Chart (Fig. 2).
Fig. 1 Resistance Type Spark Plug Cables
Ä AUDIO SYSTEM 8F - 1

(8) Upon establishing that the fault is in the an-
tenna assembly, it may be traced to one or more of
the following conditions: (a) Broken lead-in wire or shielding.
(b) Grounded lead-in wire or mast assembly.
(c) Moisture in support tube or lead-in assembly.
(d) Poor connection at antenna lead-in assembly
or shielding ground.
REMOVAL
(1) Disconnect battery negative cable.
(2) Remove the right front fender splash shield fas-
teners and pull shield away from the wheel housing.
(3) Disconnect motor leads at the connector (Fig. 15).
(4) Disconnect lead-in cable by twisting at connec-
tor (Fig. 17).
(5) Remove one screw attaching antenna to an-
tenna brace (Fig. 18). (6) Remove cap nut on fender surface with An-
tenna Nut Wench C-4816 (Fig. 11). (7) Remove antenna from under fender.
INSTALLATION
(1) Position antenna under fender and through
fender adapter. (2) Replace and tighten cap nut to 14 N Im (125 in.
lbs.) torque with Antenna Nut Wench C-4816.
(3) Position antenna on antenna brace and install at-
taching screw. Tighten to 4 N Im (40 in. lbs.) torque.
(4) Connect antenna lead at twist connector.
(5) Connect motor leads at connector.
(6) Position right front fender splash shield and in-
stall attaching fasteners. (7) Connect negative battery cable and test opera-
tion of antenna.
POWER ANTENNA MAST
REMOVAL
(1) Remove cap nut using Antenna Nut Wrench
C-4816. (2) Install temporary nut provided with the re-
placement mast. (3) Turn ignition key to ACCESSORY position and
turn on radio. (4) While the mast is moving up pull upward to re-
move mast and drive rod from the mast tube.
INSTALLATION
(1) Insert new drive rod into mast tube with drive
teeth toward antenna motor (Fig. 19).
(2) Turn off radio and guide mast into tube. The
mast may not be fully lowered when first installed. (3) Replace the temporary nut with the original
cap nut and tighten to 14 N Im (125 in. lbs.) torque
using Antenna Nut Wench C-4816. (4) Turn radio on and off to extend and retract an-
tenna. Mast should be fully lowered after recycling.
Fig. 18 Power Antenna Mounting
Fig. 17 Power Antenna Twist Connector
Fig. 19 Power Antenna Mast
Ä AUDIO SYSTEM 8F - 23

(3) Remove shelf trim panel (Fig. 33).
(4) Remove four speaker retaining screws.
(5) Pull speaker away from shelf panel and discon-
nect wiring. (6) For installation reverse above procedures.
INFINITY REMOTE AMPLIFIER
The AC and AY amplifier is located in the trunk
on the rear seat bulkhead and the behind rear trim
panel. The AJ amplifier is located in the trunk on the left
wheel housing extension behind the side trim panel. When the radio system is ON, and all or some
speakers are not operating or have a noise distortion
refer to the diagnostic tests. The amplifier has the
terminal connections list on the case (Fig. 34).
CONDITION: NOISE DISTORTION IN ALL SPEAKERS
² Check battery voltage for 11 Volts or more
² Check amplifier connectors and wires for proper
connection and continuity
² If OK, check radio, refer to Audio Diagnostic
Charts.
² If OK, replace amplifier
CONDITION: ELECTRICAL NOISE
DISTORTION ONE SPEAKER
Remove output signal connector from amplifier and
check for short to ground on the speaker with the
distortion. Refer to Fig. 34 for the appropriate pin
numbers.
² If shorted to ground disconnect speaker connector
and recheck the amplifier connector for short to
ground.
² If still shorted to ground repair wires. If not
shorted to ground, replace speaker.
Fig. 32 Door Mounted SpeakerÐAC and AY Bodies
Fig. 33 Rear SpeakersÐAC and AY Bodies
Fig. 34 Amplifier Terminals
8F - 28 AUDIO SYSTEM Ä

² If no short to ground at connector, check speaker
resistance at amplifier connector for an reading of
three to five ohms.
² If resistance is OK, refer to Radio Diagnosis. If ra-
dio checks OK, replace amplifier.
² If resistance is less than three ohms check
speaker. Check across the speaker connector if less
than three ohms replace speaker. If resistance is OK
repair wires
CONDITION: MECHANICAL NOISE DISTORTION
² Check trim for loose parts and speaker attach-
ments for buzzes
² Remove speaker still connected and listen for dis-
tortion. Distortion replace speaker.
CONDITION: ONE SPEAKER NON-OPERATIVE
² Remove output signal connector from amplifier
and check for three to five ohms resistance to the
non-operative speaker. Refer to Fig. 34 for the appro-
priate pin numbers.
² If resistance is less than three ohms, test speaker
for resistance.
² If OK repair wire. If not replace speaker.
CONDITION: ALL SPEAKERS NON-OPERATIVE
²Check radio for being ON, are the display lights
on
² Radio not ON, refer to Radio Diagnosis
² Check Amplifier Connectors and wires for proper
connection
² Check pin 9 and pin 27 for battery voltage
² If voltage OK replace amplifier ²
If pin 27 has battery voltage and pin 9 has 0 volt-
age. Refer to Power Antenna Diagnosis and test volt-
age at antenna relay.
² If pin 9 has battery voltage and pin 27 has 0 volt-
age. Check pin 27 for short to ground.
² If shorted to ground repair wire
² If no short to ground check fuse cavity number 16
for blown fuse.
² If fuse blows again replace amplifier
RELAY/CHOKEÐINFINITY SPEAKER
If the audio system is lacking bass, check for con-
tinuity across the relay and choke connectors. If no
continuity, replace relay/choke assembly (Fig. 35).
LOCATION
(1) AA and AP Bodies, attached to the reinforce-
ment above glove box. (2) AG Body, attached to the dimmer module bay-
onet bracket on the bulkhead behind the glove box.
Fig. 35 Relay/Choke Assembly
Ä AUDIO SYSTEM 8F - 29

HORNS
CONTENTS
page page
GENERAL INFORMATION .................. 1
HORN SWITCH REPLACEMENT ............ 3 TESTING HORN SYSTEM
................. 1
GENERAL INFORMATION
WARNING: ON VEHICLES EQUIPPED WITH AIR
BAG, SEE GROUP 8M, RESTRAINT SYSTEMS FOR
STEERING WHEEL OR COLUMN REMOVAL PROCE-
DURES.
The horn circuit consists of a horn switch, horn re-
lay, and horns. The horn circuit feed is from the fuse
box to the number 1 terminal on the horn relay.
When the horn switch is depressed, this completes
the circuit to ground. This activates the horn relay
and an set of contacts in the relay to close, which al-
lows current to flow to the horn(s). The horn ground
wire is attached to the headlamp ground screw (Fig.
1).
TESTING HORN SYSTEM
HORNS WILL NOT SOUND
If the horns do not sound, check for a blown horn
fuse in the fuse block. If the fuse is blown, replace it
with the same fuse type. If the horns fail to sound
and the new fuse blows when depressing the horn
switch, a short circuit in the horn or the horn wiring
between the fuse terminal and the horn is responsi-
ble. If the fuse is good, disconnect wire connector at
horn. Using an test lamp, connect one lead to the
negative terminal and the other to the positive ter-
minal (Fig. 2). Depress the horn switch, the test
lamp should illuminate. If not connect the test lamp wire to a good ground and depress the horn switch. If
test lamp lights inspect ground wire circuit and re-
pair as needed.
If the test lamp fails to illuminate, check for a de-
fective horn relay. Substituting a known good horn
relay in the circuit. If the test lamp illuminates
when depressing the horn switch, the original relay
is defective. If the test lamp fails to illuminate with
a known good relay, unplug that relay. Connect a
jumper wire from the battery terminal to the horn
terminal on the relay terminal board (Fig. 3, 4, or 5).
If the test lamp connected in place of the horns, fails
to illuminate an open circuit in the wiring between
the relay terminal and the horn switch is at fault re-
pair as necessary.
HORNS SOUND CONTINUOUSLY
CAUTION: Continuous sounding of horns may
cause relay to fail.
Should the horns sound continuously, unplug the
horn relay from the terminal board inside the pas-
senger compartment. Plug in a known good relay. If
the horns stop blowing, relay is defective and must
be replaced. Should the horns still sound, proceed as
follows: Connect one voltmeter lead to battery termi-
nal on relay board and the other lead to switch ter-
minal. Refer to Figs. 6, 7, or 8. Voltmeter will
Fig. 1 Conventional Horn System
Fig. 2 Horn and Connector
Ä HORNS 8G - 1

register battery voltage when the wire to the horn
switch is shorted to ground or the horn switch is de-
fective.
Fig. 3 Testing for an Open CircuitÐAG and AJ Bodies
Fig. 4 Testing for an Open CircuitÐAP and AA Bodies
Fig. 5 Testing for an Open CircuitÐAC and AY Bodies
Fig. 6 Testing for Short to GroundÐAG and AJ Bodies
8G - 2 HORNS Ä