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151-0
ONSTAR SYSTEM
ORN
0.35
C2
Connector
oh batt/
onstar
Fuse 27
10A
BLK
0.35
BLK
3
See Ground
Distribution,
page 14-7.
FUSE
BLOCK –
REAR
Connector
VEHICLE
COMMUNICATION
INTERFACE
MODULE (VCIM)
Connector
HOT AT ALL TIMES
C2
ORN
0.35
E4
16
7
15
Battery
positive
voltage
Battery
positive
voltage
G303
BLK
0.35
C1
8
Ground
Ground
ORN
0.8
C2
6
Class 2
serial data
Data Lines
BLK/WHT
0.35
L
2
Remote
radio audio
output (–)
RADIO
Connector
Remote
radio audio
output (–)
BLK/WHT
0.35
C
BRN/WHT
0.35
M
1
Remote
radio left
audio signal
Remote
radio left
audio signal
BRN/WHT
0.35
D
BARE
0.35
C
8
Drain
wire
Drain
wire
BARE
0.35
Twisted
Twisted
BLK
COAX
Cellular
Antenna
BLK
COAX
Navigation
Antenna
C304
Connector
GROUND
SHIELD
GROUND
SHIELD
C1
See Power
Distribution,
page 10-7.
Circuit Schematic
151-1
ONSTAR SYSTEM
See Ground
Distribution,
page 14-6.
VEHICLE
COMMUNICATION
INTERFACE
MODULE (VCIM)
Connector
DK GRN
0.35
9
B
Cellular
microphone
signal
DK GRN
0.35
E
GRY
0.35
6
A
GRY
0.35
F
C306
Connector
Cellular
microphone
low reference
C2
GROUND
SHIELD 2
Connector
See Ground
Distribution,
page 14-6.
BARE
0.35
G302
GROUND
SHIELD 1
Connector
DK GRN
0.35
GRY
0.35
P
R
C305
Connector
CELLULAR
MICROPHONE
Connector
1.5K
3.0K
13.0K
Emergency
Onstar
Dot
INSIDE
REARVIEW
MIRROR
Connector
2
10
Red
Green
LT GRN/BLK
0.35
DK GRN/WHT
0.35
YEL/BLK
0.35
BRN/WHT
0.35
BLK
0.35
3
11
LT GRN/BLK
0.35
DK GRN/WHT
0.35
YEL/BLK
0.35
BRN/WHT
0.35
BLK
5
D
C306
Connector
C
B
A
G302
C1
Keypad red
LED signal
Keypad
green LED
signal
Keypad
signal
Keypad
supply
voltage
12
15
14
11
8
BLK
5
BARE
0.35
G303
BLK
3
See Ground
Distribution,
page 14-7.
Circuit Schematic
151-2
ONSTAR SYSTEM
(Refer to Section 201 for photographs.)
Component
Photo No.
Cellular Antenna
Mounted on the window behind the left rear door
. . . . . . . . . . . .
Cellular Microphone
In upper console
91
. . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block-Rear
Under the left rear seat
52
. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside Rearview Mirror
Upper center of windshield
88
. . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Navigation Antenna
Near the base of the inside rearview mirror
88
. . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio
Center of I/P
74
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle Communication
Interface Module (VCIM)
Under right rear seat
65
. . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector
C304 (16-BLK)
Under carpet, rear floor area
103
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C305 (16-BLK)
Inside upper console
91
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C306 (6-BLK)
Under carpet, rear floor area
104
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground
G302
On the lower left B-pillar
105
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G303
On the lower right B-pillar
105
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Location Index
155
CIGAR LIGHTER
Cigar Lighter
Fuse Block-Underhood
SP201
Component Index
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