4790550 93zj secc 8u chime buzzer warning systems

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CHIME/BUZZER WARNING SYSTEMS

SEAT BELT WARNING SYSTEM

INDEX

page page

Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2General Information . . . . . . . . . . . . . . . . . . . . . . . . 1

Key-In Switch Replacement . . . . . . . . . . . . . . . . . . 4Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

GENERAL INFORMATIONThe buzzer or optional chime module is located on

the convenience center. The convenience center is lo-

cated u nder t he drivers end of the instru ment panel

(F i gs . 1 a n d 2 ). T h e b u zz er or ch i m e s ou n d s a n a u -

dible wa rn ing tone in an y of the following conditions:

Vehicle light s a re ON wh en th e ignition is switched

OFF, the key is r emoved a nd drivers door opened. Key is in th e ignition an d dr ivers door is open. (On

some vehicles, t he buzzer will not sound if the igni-

tion switch is in the RUN position).

Ignition is switched ON an d dr ivers seat belt is not

buckled. Sound will quit after 4 to 8 seconds. Besides

t h e s o u n d , a s e a t b e l t l i g h t i n d i c a t o r t u r n s o n a s a

reminder to fasten seat belt .

An input from t he Drivers Informat ion Center is

received.

There is also a door lock inhibit feature. If the key

is in t h e ign i tion or t h e lig ht s a r e O N , w h ile t h e

drivers door is open, t he power locks/keyless entr y

will not operate.

OPERATIONBattery voltage for module operation is supplied to

t w o p in s . Vol t a ge i s a l w a ys p r e se n t a t p in 7 . P i n 1

receives voltage when the ignition switch is in the

RUN or START position.

LI G H TS O N

To sound the lights on warning, the module needs:

the headlamp switch must be closed

the drivers door jamb switch m ust be closed.

These conditions ground pin 6 of the module. These

switches are closed when the headlamp switch is on,

and th e dr ivers door is open.

SEAT BELT WARNING

To sound the seat belt warning, the module needs:

battery voltage at pin (7)

battery voltage at the ignition switch input (Pin 1)

a ground at the seat belt switch.

a ground at Pin 3.

This occurs when the seat belt switch is closed because

th e drivers seat belt is n ot buckled. The fasten belt

light also will turn on along with the warning sound.

Fig. 1 Convenience Center Location

Fig. 2 Turn Signal and Hazard Warning Flashers

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K E Y I N I G N I T I O N

To s ou n d t h e k ey i n ign it ion a la r m , t h e m od u le

needs:

the ignition key warning switch must be closed

the drivers door jamb switch mus t be closed.

These conditions ground pin 6 of the module. These

s w it ch e s a r e cl os e d w h e n t h e k e y i s i n t h e i gn i t ion

an d t he drivers door is open.

VEH I LC E I N FO RM ATI O N C EN TER

There will be 6 beeps (3 beeps, pause, 3 beeps) unless

the fault goes a way or SET/SELECT is pressed in diag-

nostics mode. There should be no beeping for the first 8

seconds after the ignit ion turns ON. Beeping will only

occur for two messages in a row if the second message

has higher priority over the first message.

D O OR LO C K I N H I B I T

Pin 8 of the chime module provides the ground for

the coil side of the power door lock relay.

The LOCK function will not operate if: The chime module is not plugged in.

T h e k e y i s i n t h e i gn i t ion , o r t h e l ig h t s a r e O N ,

while th e dr ivers door is open.

The door lock inhibit feature of the chime module

is inoperable du e t o defective electronics in the chime.

In this case the operation is unpredictable.

DIAGNOSISIf the buzzer/chime unit does not operate as described,

ch eck t h e t w o fu ses fo r p i n s 1 an d 7 (F i g s. 3 , 4 ) an d

replace as required. If the fuses are not defective, per-

form the following tests to determ ine if the problem is in

the module or in the wiring. Remove the module from

the fuse block. Plug in a known good module and check

its operation. If the problem is not corr ected by r eplacing

the module, remove the module and continue as follows:

VOLTAGE TESTS

Ig n i ti o n i n R U N p o si t io n , m e a s u re b e tw e e n

t h e f o l l o w i n g p i n s a n d v e h i c l e g r o u n d .

Measure voltage at buzzer/chime module connector

pin 1. Meter should read battery voltage. If not, re-

pair open circuit t o ignition switch.

T u r n i g n i t i o n o f f a n d r e m o v e t h e k e y f r o m t h e

i g n i t i o n .

Measure voltage at buzzer/chime module connector

pin 7. Meter should read battery voltage. If not, re-

pair open circuit to fuse.

RESISTANCE TESTS

CAUTION: Before making resistance measurements,

turn ignition switch OFF and disconnect the battery

negative cable. This will avoid damaging the ohm-

meter.

Me a s ur e b e tw e e n t h e f ol lo w i n g p i n s a n d v e -

h i c l e g r o u n d .

B u zz er /ch im e m od u le con n e ct or p in 2 . M et e r

should read almost zero ohms (bulb filament). If not,

replace seat belt indicator bulb.

B u zz er /ch im e m od u le con n e ct or p in 3 . M et e r

should read zero ohms. If not, repair open circuit to

ground.

Buzzer/chime modu le conn ector pin 4. Dr ivers sea t

belt not buckled. Meter should read zero ohms. If not,

repair open circuit t o groun d (or buckle switch m ay be

defective). Meter should r ead open circuit if drivers

seat belt is buckled. If not, repair short t o ground (or

buckle switch may be defective).

Buzzer/chime module conn ector pin 6. Open driv-

ers door, k ey in ignition (in OFF position). Meter

should read zero ohms. If not, repair open circuit to

ground (or key-in-ignition switch may be defective).

Buzzer/chime module connector pin 6. Remove key

from ignition. Open drivers door, headlamp switch

on, meter should read zero ohms. If not, repair open

circuit to ground.

Fig. 3 Convenience Center Terminal Identification

Fig. 4 Buzzer Module Terminal Identification

8U - 2 CHIME/BUZZER WARNING SYSTEMS Z


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Fig. 5 Buzzer Module Schematic



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KEY-IN SWITCH REPLACEMENT

REMOVAL

(1) Disconnect batt ery n egative cable.

(2) Tilt column onlyremove ti lt lever (count er-

clockwise).

(3) Carefully remove both upper and lower steering

column covers. Requires removal of 3 screws (TorxT-20).

(4 ) R em ov e 3 i gn i t ion s w it ch m ou n t i n g s cr e ws

(tamper proof Torx bit Snap-On TTXR20B2 or equiva-

lent required) (Fig. 7).

(5) Gently pull switch away from t he column. Re-

lease 2 connector locks on the 7 terminal wiring con-

nector, then remove t he connector from the ignition

switch.(6) Release connector lock on the 4 terminal Key In

and Halo l ight connector then remove th e connector

from the ignition switch (Fig. 8).

(7 ) R em ov e t h e k ey cylin d er fr om t h e ig n it ion

switch as follows:

(a ) P l a ce t h e k ey in t h e ig n it ion s wit ch in t h e

Lock position. Use a small screw driver to depress

t h e k e y cy li n de r r e t a i n in g p in fl u sh w it h t h e k e y

cylinder surface (Fig. 9).

(b) Rotate the key clockwise to the Off position.

The key cylinder should now be unseated from the

ignition switch assembly and about 1/8 inch above

the ignition switch halo light ring (Fig. 10).

CAUTION: Do not try to remove the key cylinder at

this time.

(c) Rotate the key counterclockwise to the Lock

position and remove the key.

(d) Remove key cylind er (Fig. 11).

INSTALLATION

(1) Install 2 wiring connectors to th e switch. Make

sure that the switch locking tabs are fully seated in

the wiring connectors.

(2 ) Mou n t i gn i t ion s w it ch t o t h e col u m n w it h 3

screws. When equipped with column shift:

the shifter must be in the Park position

Fig. 6 Halo Lamp And Key-In Warning Switch Conti-nuity Chart

Fig. 7 Ignition Switch Screw Removal

Fig. 8 Key In Switch And Halo Lamp Connector

Key Cylinder Pin

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t h e p a r k l ock d ow el p in on t h e i gn i t ion s w it ch

a s s em b ly m u s t e n ga g e w i t h t h e col u m n p a r k l ock

slider linkage (Figs. 12 and 13).

Verify ignition switch is in lock position (flag is

parallel with the ignition switch terminals). Apply a

daub of grease to flag and pin. Position park lock link

a n d s li de r t o m i d-t r a v el . P os it i on i gn i t ion s w it ch

against lock housing face, making sure pin is inserted

i n t o p a r k l ock l in k con t ou r s lot . Tor q u e r e t a in i n g

screws to 2 Nm (17 in. lbs.).

(3) Assemble cover to the column with 3 screws.

Torque screws t o 2 Nm (17 in. lbs.).

(4) Tilt colum n onlyinst all t ilt lever (clockwise).

(5) Install battery negative cable.

(6) Inst all key cylinder as follows:

(a) With the key cylinder and the ignition in the

Lock position, gently insert the key cylinder into

the ignition switch assembly until it bottoms.

(b ) I n s e r t k e y, w h il e g e n t ly p u s h in g on t h e k e y

cylinder inward toward the ignition switch, rotate

the key clockwise to the Run position.

(7) Check for proper opera tion of push-to-lock, ha lo

lighting, Accessory, Lock, Off, Run, Start , Column

Lock and Shift Lock (if applicable).

Fig. 10 Unseated Key Cylinder

Fig. 11 Key Cylinder Removal

Fig. 12 Ignition SwitchView From Column

Fig. 13 Ignition Switch Mounting PadTypical



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4790550 93zj secc 8u chime buzzer warning systems

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