1993 CHEVROLET DYNASTY Service Manual

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Page 745 of 2438

CHEVROLET DYNASTY 1993 Service Manual CHIME WARNING/REMINDER SYSTEM
CONTENTS
page page
BODY CONTROLLER REPLACEMENT ........ 5
CHIME MODULE REPLACEMENT AA and AP BODIES .............................. 5
CHIME SYSTEM DIAGNOSISÐAA AND AP

CHIME WARNING/REMINDER SYSTEM
CONTENTS
page page
BODY CONTROLLER REPLACEMENT ........ 5
CHIME MODULE REPLACEMENT AA and AP BODIES .............................. 5
CHIME SYSTEM DIAGNOSISÐAA AND AP BODIES .............................. 2
CHIME SYSTEM DIAGNOSISÐAC, AG, AJ AND AY BODIES ....................... 3
CHIME WARNING/REMINDER SYSTEM TEST . 1 GENERAL INFORMATION
.................. 1
HEADLAMP SWITCH REPLACEMENT ........ 5
KEY-IN SWITCH REPLACEMENT ............ 5
SEAT BELT BUCKLE REPLACEMENT ........ 5
SEAT BELT BUCKLE SWITCH TEST BUZZER SYSTEM .............................. 1
SERVICE PROCEDURES ................... 5
TIMED BUZZER-RELAY TESTÐAP BODY ..... 1
GENERAL INFORMATION
WARNING: ON VEHICLES EQUIPPED WITH AN AIR
BAG REFER TO THE AIR BAG PORTION OF THIS
SECTION FOR STEERING WHEEL OR SWITCH RE-
MOVAL AND INSTALLATION PROCEDURES.
BUZZER SYSTEM
The seat belt warning system uses both visual and
audible signals. A combined seat belt and key warn-
ing buzzer with a red light on the instrument panel. The system will always illuminate the seat belt
warning lamp for four to eight seconds when the ig-
nition switch is turned to the ON position. Also, only
if the driver does not fasten his seat belt, the buzzer
will sound during the same time interval. Passenger
belts are not connected to the system. A timed buzzer-relay is used to operate the system
for the time period. It consists of a time delay mech-
anism and buzzer assembly. Only the driver's seat
belt buckle has a switch that is connected to the sys-
tem.
CHIME WARNING/REMINDER SYSTEM
The chime warning/reminder system is similar in
operation to the buzzer system except for a more
pleasant sounding tone. This chime type tone sounds
for all three warning/reminder conditions; namely
headlamps left on, keys left in ignition and fasten
seat belt.
TIMED BUZZER-RELAY TESTÐAP BODY
PREPARATION
(1) Remove timed buzzer-relay (Fig. 1).
(2) Connect one end of a jumper wire to a 12 volt
supply. (3) Connect a test lamp equipped with a number
194 lamp or equivalent, between terminal number 3
of relay and ground. (4) Ground terminals 2 and 5 of relay.
TEST
(1) Connect 12 volt jumper wire to terminal num-
ber 4 of timed buzzer-relay, look at test lamp and lis-
ten for buzzer. (2) Test lamp should come on and buzzer should
sound for four to eight seconds and then both should
go off; if not, replace timed buzzer-relay. (3) If operation is okay, check all wiring in vehicle
for opens, shorts, or poor connections.
SEAT BELT BUCKLE SWITCH TEST BUZZER
SYSTEM
Test timed buzzer-relay. If it checks OK, check the
wiring between seat belt buckle and ground. The
wire that goes to terminal 5 of relay from buckle
switch, refer to Fig. 2 and 3. If they check out okay,
replace buckle switch.
CHIME WARNING/REMINDER SYSTEM TEST
FASTEN SEAT BELTS
To test the fasten seat belts function, turn the ig-
nition switch to the ON position with the driver's
seat belt unbuckled. The seat belt warning lamp
should light for four to eight seconds and the tone
should sound three to five times.
Fig. 1 Timed Buzzer-Relay Terminal Identification
Ä CHIME WARNING/REMINDER SYSTEM 8U - 1

Page 746 of 2438

CHEVROLET DYNASTY 1993 Service Manual HEADLAMPS LEFT ON
To test the headlamps left on function, turn head-
lamps on with drivers door open. Chime should
sound until headlamps are turned off or drivers door
is closed.
KEY LEFT IN IGNITION

Page 747 of 2438

CHEVROLET DYNASTY 1993 Service Manual (3) Check for tone in any other function.
CONDITION: NO FASTEN SEAT BELT LAMP WHEN IGNITION SWITCH IS TURNED ON.
PROCEDURE
(1) Check for burned out lamp.
(2) Check for battery feed at terminal 6 and

Page 748 of 2438

CHEVROLET DYNASTY 1993 Service Manual (2) Check for battery feed at terminal 16 and igni-
tion feed at terminal 12 of 25-way body controller
connector (Fig. 6, 7 and 8). (3) Check for tone in any other function.
CONDITION: NO FASTEN SEAT

Page 749 of 2438

CHEVROLET DYNASTY 1993 Service Manual CONDITION: NO TONE WHEN HEADLAMPS ARE ON AND DRIVERS DOOR IS OPEN, ANDIGNITION IS OFF
PROCEDURE
(1) Check left door jamb switch for good ground
when drivers door is open. This may be checked at
t

Page 750 of 2438

Page 751 of 2438

CHEVROLET DYNASTY 1993 Service Manual GENERAL INFORMATION
CONTENTS
page page
CIRCUIT IDENTIFICATION ................. 3
COMPONENT IDENTIFICATION ............. 3
CONNECTORS ........................... 4
FUSIBLE LINKS ................

Page 752 of 2438

CHEVROLET DYNASTY 1993 Service Manual In certain instances a wire may be referenced to
another sheet. When this happens, the wire will be
identified as to what it is ie: feed, ground, etc, and
where its going (Fig. 6). This has been done

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