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114-4
INTERIOR LIGHTS
PNK/BLK
0.35
BRN
0.35
MINIWEDGE
(DOOR
JAMB
SWITCH)
–
FRONT
PASSENGER
Connector
DRIVER
DOOR
MODULE
(DDM)
Connector
B10
A2
Left front
door ajar
switch signal
Left front
door
switch low
reference
MINIWEDGE
(DOOR
JAMB
SWITCH) –
DRIVER
Connector
Gnd
Door
ajar
D
B
C2
Serial
data
C2
A9
Data
Lines
BRN
0.35
GRY/BLK
0.35
TAN
0.35
FRONT
PASSENGER
DOOR
MODULE
(FPDM)
Connector
B10
A2
C1
Gnd
Door
ajar
A
C
C2
Serial
data
C2
A9
Data
Lines
DK GRN
0.35
D
Gnd
Door
ajar
B
MINIWEDGE
(DOOR
JAMB
SWITCH) –
LIFTGATE
1
2
LIFT GLASS
AJAR
SWITCH
Connector
C3
12
DK BLU
0.35
11
Liftgate
ajar
switch
signal
Liftgate
ajar switch
low
reference
LIFTGATE
MODULE
(LGM)
Connector
LT GRN
0.35
9
Lift glass
ajar switch
low
reference
10
Lift glass
ajar
switch
signal
PPL
0.35
2
C2
LT BLU
0.35
Data
Lines
Class 2
BLK/WHT
0.35
Right front
door
switch low
reference
Right front
door ajar
switch signal
Circuit Schematic
114-5
INTERIOR LIGHTS
LT GRN/BLK
0.35
C
C1
A3
B1
Class 2
serial data
BODY
CONTROL
MODULE
(BCM)
Connector
A
LT GRN/BLK
0.35
FUSE
BLOCK–
REAR
Connector
C4
A12
C2
RIBBON
CABLE
LT GRN
0.35
Data
Lines
LT BLU/BLK
0.35
Door
ajar
B
A8
Left
rear
door
ajar
switch
signal
G302
BLK
5
See Ground
Distribution,
page 14-6.
A
LT BLU/BLK
0.35
F10
RIBBON
CABLE
Right
rear
door
ajar
switch
signal
C3
C700
Connector
A3
A8
MINIWEDGE
(DOOR
JAMB
SWITCH) –
LEFT
REAR
Connector
D
L
C700
Connector
BLK
0.35
BLK
0.35
Door
ajar
G303
BLK
3
See Ground
Distribution,
page 14-7.
MINIWEDGE
(DOOR
JAMB
SWITCH) –
RIGHT
REAR
Connector
A
L
C800
Connector
BLK
0.35
BLK
0.35
C800
Connector
Circuit Schematic
114-6
120Ć3
Interior Lamps
The interior lighting consist of the following 2 groups.
This first group includes lamps that may not be dimmed.
S
The Cargo lamp
S
The Dome lamps
S
The Reading Lamps
S
The Vanity Mirror Lamps
Courtesy Lamps
The courtesy lamps include the reading lamps, cargo
lamp, and dome lamps. The cargo lamp and dome
lamps may be manually turned on or off by placing the
interior lamp switch in the ON or OFF position. When
the driver places the dome lamp defeat switch in the
OFF position, these courtesy lamps will be disabled. If a
door is opened, the courtesy lamps illuminate. After all
the doors have been closed, the courtesy lamps will
remain illuminated approximately 15 seconds after the
last door closes. The courtesy lamps will also turn on
prior to any door being opened and will remain
illuminated approximately 40 seconds when the driver
removes the ignition key. The BCM will immediately
turn off the courtesy lamps if a door lock command is
received with all of the doors closed, or if the ignition
switch is turned to either the ON or RUN position.
Keyless Entry Interior Illumination
When the driver uses the door key in order to unlock the
doors, the body control module (BCM) receives a door
unlock signal. The BCM must have inputs that indicate
that the ignition switch is OFF, the courtesy lamp switch
is OFF and all the doors are closed. The BCM will then
illuminate the interior lamps. The courtesy lamps will
remain illuminated for approximately 15 seconds after
the door is closed. If the door locks are activated to the
LOCK position, or if the ignition switch is turned to either
the RUN or CRANK position, the courtesy lamps will
turn off immediately.
When the driver uses the remote function actuator
transmitter to unlock the doors or presses the panic
button, the BCM will keep the courtesy lamps on for
approximately 15 seconds. If the door locks are
activated to the UNLOCK or LOCK position or if the
ignition switch is turned to either the RUN or CRANK
position, the courtesy lamps will turn off immediately.
The BCM will also keep the courtesy lamps on for
approximately 40 seconds after an alarm event is
completed.
Vanity Mirror Lamps
The inadvertent power courtesy lamps supply voltage
circuit of the BCM provides battery positive voltage to
each vanity mirror lamp. When the vanity mirror cover
on the sunshade is opened, a switch closes to provide a
ground circuit and the vanity lamp illuminates.
Battery Rundown Protection/Inadvertent Power
The BCM inadvertent power courtesy lamps supply
voltage circuit provides battery positive voltage to all of
the interior reading lamps and both visor vanity mirror
lamps. In the event that any of these lamps were to
remain illuminated for a period of more than 20 minutes
with the ignition switch in the OFF position, the BCM will
deactivate the inadvertent power courtesy lamps
supply voltage circuit to prevent a total battery
discharge condition. Only when the ignition switch is
cycled back to the RUN position will the BCM reset the
internal timer and reactivate the inadvertent power
courtesy lamps supply voltage circuit.
The BCM also utilizes the inadvertent power courtesy
lamps supply voltage circuit as a courtesy lamp request
signal circuit when none of the lamps in the circuit are
illuminated. When a lamp switch is activated, the BCM
receives the request for lamp illumination and switches
to supplying voltage to the inadvertent power courtesy
lamps supply voltage circuit.
Circuit Operation
INTERIOR LIGHTS
114-7
120Ć3
Interior Lamps Dimming
The second group includes lamps which may be
dimmed. This group may use a combination of vacuum
fluorescent (VF) illumination and of incandescent
lamps.
S
Door switches and window switches
S
HVAC control head assembly
S
Radio and steering wheel controls
S
The Rear HVAC/Radio controls
S
The instrument panel cluster (IPC)
When the ignition switch is turned to the RUN position,
the radio’s vacuum fluorescent (VF) displays turn on at
maximum brightness. When the park lamps are on, all
incandescent back lighting turn on at the dimming level
indicated by the I/P dimmer switch. At the same time all
vacuum fluorescent (VF) displays dim to match the
indicated dimming level. The panel dimmer switch
potentiometer is an input to the BCM. When the driver
selects a dimming setting by moving the I/P dimming
switch potentiometer, all incandescent back lighting
lamps are provided with a specific voltage. The
incandescent back lighting lamps are then grounded at
G201, G302, and G303. When the I/P dimmer switch is
moved from MIN to MAX, all vacuum fluorescent (VF)
displays, as well as all incandescent back lighting
respond
from
minimum
intensity
to
maximum
brightness in response to the I/P dimmer switch.
Circuit Operation
INTERIOR LIGHTS
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