buttons CHEVROLET DYNASTY 1993 Owner's Manual

to the deck lid open position. If the pull down limit
switch is depressed at this time, the motor should
stop.(c) If these results are not obtained, replace the
pull down motor assembly.
REMOTE KEYLESS ENTRY
OPERATION
The transmitter has three buttons for operation
(Fig. 11).
² UNLOCK driver's door, enable illuminated entry,
and disarm the Theft Security System. Pushing and
releasing the button once will unlock the driver's
door. Two times within five seconds all doors will un-
lock.
² LOCK all doors, set Theft Security System and
chirp horn. Chirp of horn is a short toot to notify
that the alarm system is set and the indicator lamp
on the instrument panel will flash for about 15 sec-
onds.
² Unlock Trunk Lid
² The receiver is capable of retaining VAC even
when power is removed.
² Each receiver must have at least one and no more
than two transmitters.
CONTROL RANGE
Operation range is within 7 meters (23 ft.) of the
receiver.
TRANSMITTER BATTERY
The battery can be removed without special tools
and are readily available at local retail stores. The
recommended battery is Duracell DL 2016 or equiv-
alent. Battery life is about one to two years.
PROGRAM REMOTE KEYLESS ENTRY
(1) Remove trim cover or floor console as needed
that may be covering the Air Bag System Diagnostic
Module (ASDM). (2) Pull floor carpeting back between the accelera-
tor peddle and ASDM. (3) Locate program line a dark green wire with a
insulator on the end. Located between the accelerator
and (ASDM). (4) Turn ignition switch to the ON position.
(5) Connect the program line from the Remote
Keyless Entry Module to ground. The door locks will
lock and unlock to indicate the receiver is ready to
receive transmitter code. Trunk solenoid will not cy-
cle. (6) Press any button on the transmitter to set code.
If there is a second transmitter it has to be set at
this time. The locks will cycle to confirm program-
ming. (7) Disconnect the program line from ground. This
returns the system to its normal operation mode. (8) Replace trim cover or floor console as neces-
sary.
HORN CHIRP CANCELLATION
During the programming operation the horn chirp
can be disabled using the following procedures: (1) Remove trim cover or floor console as needed
that may be covering the Air Bag System Diagnostic
Module (ASDM). (2) Pull floor carpeting back between the accelera-
tor peddle and ASDM. (3) Locate program line a dark green wire with a
insulator on the end. Located between the accelerator
and (ASDM). (4) Turn ignition switch ON.
(5) Connect the program line from the Remote
Keyless Entry Module to ground. The door locks will
lock and unlock to indicate the receiver is ready to
receive transmitter code. Trunk solenoid will not cy-
cle. (6) Press any button on the transmitter to set code.
If there is a second transmitter it has to be set at
this time. The locks will cycle to confirm program-
ming. (7) Press LOCK then UNLOCK transmitter but-
tons repeat three times. (8) Door locks and rear release will cycle three
times as feedback of Horn Chirp lockout. (9) Remove ground from program line to restore
normal system operation. (10) To reinstate the Horn Chirp feature refer to
Program Remote Keyless Entry.
TESTING
CONDITION: When trying to program the receiver
module in the vehicle with a new transmitter and
there is no response from the module, Example: the
door locks do not cycle through a lock/unlock routine.
Refer to Fig. 12 for a block wiring diagram or to
Group 8W, Wiring Diagrams.
Fig. 11 Transmitter
Ä POWER LOCKS 8P - 5

SYSTEM SOFT LIMITS
This portion of the system becomes activated when
the control module must shut off a specific seat, re-
cliner or mirror motor because it has reached the end
of its travel. When a mechanical stall condition is de-
tected, the control module will set a soft limit in its
memory and will not allow the motor to be driven
past that point. To override the soft limits, activate the seat or re-
cliner switch twice in the desired direction holding
the switch activated until the end of travel has been
reached. Reactivate and hold the switch once more
for three seconds. This will cause new soft limits to
be set in the control module.
SETTING SYSTEM SOFT LIMITS
If the control module or motor assemblies have
been replaced, the control module must learn its new
soft limits. To do this, perform the memory seat di-
agnostic self-test. After the tests are completed, the
control module will have learned and memorized its
new soft limits.
TEST PROCEDURES
Before any testing is attempted, the battery should
be carefully charged and all connections and termi-
nals cleaned and tightened to insure proper continu-
ity and grounds.
MEMORY SEAT AND MIRROR DIAGNOSTIC
SELF-TESTS
The system has a built-in set of three self-tests
which check all components in the system while giv-
ing a visual feedback. To enter the first self-test mode, switch test, press
memory position 1 and 2 buttons, hold for at least
five seconds and no longer than ten seconds. Follow
this immediately by pressing the Set button and hold
for at least five seconds but less than ten seconds.
Three seconds after the button is released, the seat,
recliner and mirrors will move to a mid-travel posi-
tion. Within ten seconds, press and release a seat
button to activate a seat or recliner motor. All
switches except the mirror switches may now be
tested one at a time. The memory switches, Position
1 and 2 and Set buttons, may also be tested. A good
switch contact actuation will NOD the seat. The seat
nod consists of seat front up and seat track forward
followed by seat front down and seat track rearward.
The nod also includes both outside power rear view
mirrors operating in the vertical plane. The system
will continue NODDING for good switches until 10
seconds pass without any switch actuation. Within 10 seconds of the last seat nod, press mem-
ory position 1 and 2 buttons for at least 5 seconds
Fig. 9 Seat AdjusterÐAA Body
8R - 6 POWER SEATS Ä

but less than 10 seconds, and then release. The seat
will move, after 3 seconds, to a full down and rear-
ward position. This is the seat check mode. The control module
will now move the motors to a stall in forward, rear-
ward, front up, front down, rear up, rear down, re-
cliner forward, and recliner rear ward positions. If a
problem exists, the control module will not move that
part of the seat. After all motors have been run to
stall, the system will pause for 3 seconds, then re-
turn to the mid-travel position. The control module will now move the seat through
its positions for two seconds run time. If a problem has been found, the control module
will go into a loop and just move the problem part of
the system. To exit the loop, press the Set or Position
1 or 2 buttons or repair the fault; i.e.: repair a ter-
minal push out, etc. When the seat movements are complete, the sys-
tem will return to its normal operating mode unless
memory Position 1 and 2 buttons are held for at least
five seconds, but less than ten seconds and then re-
leased. The seat will return to its mid-travel position
and the mirrors will move full downward and to the
left. This is the mirror check mode. The control mod-
ule will then move the right mirror fully horizontal
outboard, and horizontal inboard. This is followed by
the left mirror fully horizontal inboard, horizontal
out board, vertical up, and vertical down. Each motor
will be driven until the associated mirror plane face
has been stalled for up to 1-1/2 seconds at each end
of travel. If the control module encounters a problem
with any position sensing rheostat that is connected
to each motor, that particular motor will not be ac-
tuated. After an other three second pause, the control
module will again try running the mirror motors in
the directions given above plus the right mirror ver-
tical up and vertical down. Any motor that has no
problem will run for two seconds in each of the given
directions. If a problem is found, the control module will go
into a loop and move only the problem part of the
system. To exit the loop, repair the fault, or press the
Set, Position 1 or 2 buttons. The control module will
then finish the motor actuation that are shown
Fig. 13 Seat Wing Switch Continuity
Fig. 14 Lumbar Switch Continuity
Fig. 15 Memory Seat Switch
8R - 8 POWER SEATS Ä

POWER MIRRORS
CONTENTS
page page
AUTOMATIC DAY/NIGHT INSIDE MIRROR .... 7
AUTOMATIC DAY/NIGHT INSIDE MIRROR WITH ULTRALIGHT HEADLAMP CONTROL ....... 7
GENERAL INFORMATION .................. 1
HEATED MIRROR ........................ 2
INSIDE MIRROR/READING LAMPS BULB/LENS REPLACEMENT ........................ 6
INSIDE MIRROR/READING LAMPS REPLACEMENT ........................ 6
MIRROR ASSEMBLY REPLACEMENTÐAA BODY.5
MIRROR ASSEMBLY REPLACEMENTÐ AC AND AY BODIES .................... 5
MIRROR ASSEMBLY REPLACEMENTÐAG BODY.5
MIRROR ASSEMBLY REPLACEMENTÐAJ BODY.5
MIRROR ASSEMBLY REPLACEMENTÐAP BODY.5
MIRROR MOTOR TEST PROCEDURE ........ 2
MIRROR SWITCH REPLACEMENTÐAA BODY . 3
MIRROR SWITCH REPLACEMENTÐAC AND AY BODIES .............................. 4
MIRROR SWITCH REPLACEMENTÐAG AND AJ BODIES .............................. 3
MIRROR SWITCH REPLACEMENTÐAP BODY . 4
MIRROR SWITCH TEST PROCEDURE ....... 2
TEST PROCEDURES ...................... 2
GENERAL INFORMATION
Electrically operated power mirrors are available
on all car lines. The mirrors are controlled by a sin-
gle switch assembly located either on the driver's
door trim panel or on the center console. There are three types of switches currently used,
each use s a L (left) R (right) for mirror selection (Fig.
1). Type I, which uses a rocker for mirror selection
and four buttons for mirror movement direction.
Type II, uses a toggle switch which is rotated clock-
wise for the Right mirror or counterclockwise for the
Left mirror selection, and moved UP, DOWN, LEFT,
or RIGHT for mirror movement direction. Type III, uses a paddle knob which is moved Left or Right for
mirror selection and four buttons for mirror move-
ment direction.
The motors which operate the mirrors are part of
the mirror assembly and cannot be replaced sepa-
rately. 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 Group 8W, Wiring Dia-
grams.
Fig. 1 Power Mirror Switches
Ä POWER MIRRORS 8T - 1

AUTOMATIC DAY/NIGHT INSIDE MIRROR
Operational test:
² Turn ignition switch to the ON position with the
vehicle in park (Fig. 21).
² Place mirror switch in the high position.
² Cover the forward facing sensor with dark cloth to
keep out any ambient light.
² Shine a light into the rear facing sensor, watch to
see if the mirror darkens. With the mirror darkened, place the vehicle in re-
verse, the mirror should return to its normal condi-
tion. If the above conditions are met the mirror is oper-
ating properly.
² If not test voltage.
Test three way connector harness. Refer to Fig. 21. (1) Pin 1 Ignition Switch in run position, should
have battery voltage. (2) Pin 2 Should have continuity to Ground.
(3) Pin 3 When the transmission is in reverse,
should have battery voltage. (4) If test is OK replace Mirror.
(5) If not refer, to Wiring Diagrams manual to test
the circuits.
AUTOMATIC DAY/NIGHT INSIDE MIRROR WITH
ULTRALIGHT HEADLAMP CONTROL
CAUTION:When JUMP STARTING the vehicle, be-
fore cranking engine turn ignition ON and turn OFF
the Automatic Headlamp Control.
The mirror automatically reduces the amount of
headlamp glare from rear approaching traffic and
provides automatic headlamp control (Fig. 22).
SELF DIAGNOSTIC MODEÐOPERATIONAL TEST:
(1) Place shift selector in park (P) or Neutral (N)
position. With ignition OFF, press and hold AUTO
MIRROR and AUTO LAMP (headlamp) buttons, turn
ignition switch ON. When LED indicators start
flashing, release buttons. (a) The button LED indicators should flash for
about five seconds.
² AUTO MIRROR
² DARK
² AUTO LAMP
(b) If they continue to flash much longer than
five seconds, the mirror assembly is defective.
Fig. 20 Header Mirror/Reading Lamps
Fig. 21 Automatic Day / Night Mirror
Fig. 22 Automatic Day / Night Mirror with Ultralight Headlamp Control
Ä POWER MIRRORS 8T - 7

(8) Remove the upper to lower steering coupler re-
taining nut and pinch bolt (Fig. 6). Remove the upper
steering coupler from the lower steering coupler shaft.
(9) Place the gear shift lever in either the neutral
or park position. (10) Remove the PRNDL indicator actuation cable
from the steering column actuating arm (Fig. 7).
(11) Release the lock bar on the column insert.
Squeeze the legs of the column insert together and re-
move insert from steering column assembly (Fig. 7).
(12) Secure the insert and actuation cable out of
the way. (13) Remove tilt lever (if equipped) from steering
column.
(14) Remove the upper and lower lock housing
shrouds (Fig. 1) from the steering column assembly. Re-
move the lower fixed shroud from the steering column
assembly. The shroud fasteners are Torx-headscrews.
(15) Remove the wiring harness connector to the
turn signal/multi-function switch using a 7mm
socket as shown in (Fig. 8). (16) Remove the electrical connections from the
Key-in Switch & Halo Light, Main Ignition Switch,
Horn connection or Clock Spring (Speed Control
Equipped) (Fig. 9). (17) Loosen the upper steering column support
bracket nuts (Fig.10) to allow some slack. This will
aid in removal of the upper fixed shroud. (18) Remove the upper fixed shroud (Fig. 1) from
the steering column assembly. Remove the wiring
harness from the steering column assembly by pry-
ing out the plastic retainer buttons (Fig. 8). (19) Remove the lower dash panel and support
bracket standoff fasteners (Fig. 1). (20) Remove the steering column assembly out
through the passenger compartment. Use care to
avoid damaging the paint or interior trim.
Fig. 5 Steering Column Cover Removed
Fig. 6 Steering Column Coupler Remove and Install
Fig. 7 PRNDL Cable Removal
Ä STEERING 19 - 31

(3) Position the steering column assembly in the
vehicle. Align the steering column assembly mounting
bracket slots on the brake pedal bracket attaching
studs (Fig. 13). Install, but loose assemblethe two
upper column bracket, washers and nuts.
(4) Make sure the front wheels are in the straight-
ahead position. Align and assemble the upper steering
coupler to lower steering coupler. Install the upper to
lower steering coupler retaining bolt and nut. Torque
the retaining bolt nut to 28 N Im (250 in. lbs.). Be sure
to install the upper to lower steering coupler
retaining bolt retention pin (Fig. 6). (5) Install the buttons which retain the multi func-
tion switch wiring harness to the steering column.
Connect the multi-function switch wiring harness con-
nector to the multi-function switch. Torque the connec-
tor retaining bolt to 2 N Im (17 in. lbs) usin ga7mm
socket (Fig. 8). (6) Install the upper fixed shroud onto the steering
column assembly. (7) Be sure both breakaway capsules are fully seated
in the slots of the steering column upper support
bracket. Torque the 2 upper steering column assembly
to support bracket nuts to 12 N Im (105 in. lbs.). Torque
the 2 lower steering column assembly to mounting
bracket nuts to 12 N Im (105 in. lbs.).
(8) Complete the wiring harness connections to the
remaining steering column switches (Fig. 9). Install
the lower fixed shroud onto the steering column.
(9) Route the PRNDL actuator assembly under left
steering column wing and along left side of steering
column. Insert the flange of the PRNDL actuator steering
column insert into the steering column jacket (Fig. 7).
Squeeze the legs of the steering column insert together
and install tabs under steering column jacket. Engage
lock bar to secure the actuator assembly into the steering
column jacket (Fig. 7). (10) Hook the PRNDL actuator cable eyelet to the
steering column actuator arm (Fig. 7). Move the shift
lever to neutral, check pointer location, should indicate neutral. If pointer does not indicate neutral adjust actua-
tor with tool (Fig. 14) to center pointer on N (Neutral) and
then check pointer location in other gears.
(11) Install the lock housing shrouds. The shroud
fasteners are Torx-headscrews. Install the tilt lever
(if equipped). (12) Install the lower dash panel cover.
(13) For steering wheel installation with speed con-
trol refer to Group 8 Electrical. For non-speed control,
place the steering wheel on the steering column shaft
with the master splines aligned. Install the steering
wheel to column shaft retaining nut. Tighten retaining
nut to 61 N Im (45 ft. lbs.) torque. Do not force the
steering wheel onto the column shaft by driving
it on with a heavy object. Pull steering wheel
down onto column shaft using ONLY the steering
wheel retaining nut.
(14) For vehicles equipped with a column shift. Pass
the transmission shift cable through its mounting bracket
on the steering column assembly. Connect the transmis-
sion shift cable to the shift lever on the steering column
assembly. Install the shift cable to mounting bracket
retaining clip (Fig. 2). The grommet must be installed
in the shift lever (Fig. 11) before the cable is in-
serted into the grommet. Use MopartMultipurpose
Lubricant, or an equivalent product, to aid installation of
shift link rod into grommet.
(15) Re-adjust the transmission shift linkage.
Whenever the steering column is loosened or
removed, the shift linkage MUST be adjusted and
tested. Refer to Group 21 Transmission for the shift
linkage adjustment procedure.
Fig. 13 Steering Column Mounting
Fig. 14 PRNDL Actuator Cable Adjustment
Ä STEERING 19 - 33

NONÐCOMPUTER AIDED DIAGNOSTIC TESTS
Determine whether the operator complaint is due
to a system failure or improper operation of the ATC
system. The system will to go into a maximum heat
or cooling mode if the operator changes the tempera-
ture setting four or more degrees. Check the following:
² Coolant level
² Refrigerant charge
² Drive belt tension
² Radiator air flow
² Radiator fan operation
² Air suction of In-car Temperature Sensor/Aspirator
To check air suction of the Aspirator, place a small
piece of tissue paper over the Aspirator opening on
the instrument panel. This opening is located to the
right of the steering column. The tissue paper should
cling to the opening if system is functioning properly. Bring the engine to normal operating temperature
and proceed with Computer Aided Diagnostic Proce-
dures. Always test the entire system after each re-
pair has been performed.
COMPUTER AIDED DIAGNOSTIC TESTS
The ATC control has a computer capable of trou-
bleshooting the entire ATC system in approximately
60 seconds. The engine must be running and at nor-
mal operating temperature during the test to provide
hot coolant for the heater. During the ATC Diagnostic Test, the computer will
calibrate the Mode and Blend Door actuators.
CAUTION: Do not remove the actuators from the
heater-A/C unit assembly with power applied. Re-
moval should only be done with the Ignition OFF.
The actuators have no mechanical stops to limit the
travel. If the actuator rotates and is not connected
to the unit assembly, it will become un-calibrated.
The Diagnostic Test is capable of checking all elec-
trical signals between the ATC Control Module, ac-
tuators, sensors and blower control. The Diagnostic Test will display two types of Diag-
nostic trouble Codes (Fig. 21). The Diagnostic Trou-
ble Codes numbered 01 through 22, have been
detected during the Diagnostic Test. Diagnostic Trou-
ble Codes numbered 23 through 28, have been de-
tected during normal ATC operation. Diagnostic
Trouble Codes 23 through 28 would then be stored in
the ATC control computer and are only being re-
trieved during the Diagnostic Test.
For electrical pin numbers, refer to the wiring Pin
out charts on the following pages in this section. (1) Start vehicle and allow engine to warm up.
(2) For two seconds, depress the DEFROST,
FLOOR and MODE buttons at the same time. The
ATC control should begin to flash on and off. (3) During the Diagnostic Test perform the follow-
ing symptom tests: (a) Do all display symbols and indicators illumi-
nate ?
Fig. 19 Sun Sensor
Fig. 20 Sun Sensor Removal
Fig. 21 Automatic Temperature Control Diagnostic Trouble Codes
24 - 72 HEATING AND AIR CONDITIONING Ä