Chrysler DODGE D150 1993 Service Manual page 473

8U - 2 CHIME/BUZZER WARNING SYSTEMS •
TERMINAL 7
TO B +
TERMINAL 6
TO DOOR SWITCH
KEY IN SWITCH A N D
HEADLAMP O N
SWITCH
!cO=f M i c£K *£h\
• C Z 3 EZZ3 E Z I 1
TERMINAL 4
TO SEAT BELT
BUCKLE SWITCH
TERMINAL 1
TO IGNITION
SWITCH
TERMINAL 3
TO GROUND
TERMINAL 2
TO SEAT BELT
WARNING LIGHT
J928U-12
Fig. 2 Buzzer Module Connector Terminal
Identification—Front View
LIGHTS-ON/KEY-IN-IGNITION
WARNING
BATTERY ( + )
IS SI S K|
IGNITION
SEAT BELT
WARNING LIGHT
GROUND
SEAT BELT
SWITCH
J928U-9
Fig. 3 Buzzer Module Terminal Identification—Front
View
RESISTANCE TESTS
C A U T I O N : Before making resistance measurements,
turn ignition switch O F F and disconnect negative
cable from battery to avoid damaging ohmmeter.
Measure b e t w e e n the following pins a n d vehi­
cle ground.
• Buzzer module connector pin 2. Meter should read
almost zero ohms (bulb filament). If not, replace seat
belt indicator bulb.
• Buzzer module connector pin 3. Meter should read
zero ohms. If not, repair open to ground.
• Buzzer module connector pin 4. Drivers seat belt
not buckled. Meter should read zero ohms. If not, re­
pair open to ground (or buckle switch may be defec­
tive). Meter should read open circuit if drivers seat
belt is buckled. If not, repair short to ground (or
buckle switch may be defective).
• Buzzer module connector pin 6. Open driver's door,
key in ignition, (in OFF position). Meter should read
zero ohms. If not, repair open to ground.
• Buzzer/chime module connector pin 6. Open driv­
er's door, headlamp switch on, meter should read
zero ohms. If not, repair open to ground.
r—i DOORSW
± 7 (SHOWN DOOR CLOSED)
r F Y < ; w
M UGHTS SW
(SHOWN KEW/ f(SHOWN^JGHTS OFF)
#5
-^•^Y BELT(I)
SW LAMP JL
SEAT BELT SW
/. (SHOWN
- BUCKLED)
IGN SW
(SHOWN IGN OFF)
PIN VIEW (SAME AS REAR SIDE [WIRE SIDE]
CONNECTOR VIEW)
X = Do Not Care
FUNCTION DESCRIPTION IGN. SEAT
BELT
DRIVER'S
DOOR
KEY HEAD
LAMPS
Seat
Belt
Reminder
4 to 8 Second
Tone and
Lamp Output
^ O n
O P
Not
Bckld
X X X
Seat
Belt
Reminder 4 to 8 Second
Lamp Output
Only
^ O n
O f P
Bckld
X
X X
Key and
Head Lamp
Reminder*
Continuous,
Steady
Tone
X X
Open
In X
Key and
Head Lamp
Reminder*
Continuous,
Steady
Tone
X X
Open
X
On
*On some vehicles, the key switch opens when the ignition is
switched on.
J928U-8
Fig. 4 Buzzer Module Schematic
o o o o
4
3
2
1
WIRE
CAVITY
APPLICATION
CONTINUITY
BETWEEN
1
2
H d o lamp
Halo lamp
1 & 2 Almost zero ohms
(bulb filament)
3
4
Key-in warning switch
Key-in warning switch
3 & 4 with key in ignition
J918M-3
Fig. 5 Halo Lamp And Key-In Warning Switch
Continuity Chart