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63-1
AIR CONDITIONING: MANUAL (Compressor Controls)
LT GRN
0.35
WHT
0.35
DK GRN
0.35
C2**
C1*
HOT IN RUN AND START
IGN E
Fuse 22
10A
FUSE
BLOCK-
UNDERHOOD
Connector
C2
F12
Class 2
serial
data
A/C
RELAY 44
C1
E12
**58
*59
POWERTRAIN
CONTROL
MODULE
(PCM)
(4.2L)
(5.3L)
Connector 4.2L
Connector 5.3L
HOT AT ALL TIMES
HVAC
CONTROL
MODULE
Connector
C1
B12
B11
A/C
compressor
status
signal
SPLICE
PACK
SP205
L
B
Data
Lines
DK GRN/WHT
0.35
**43
*42
BLK
0.35
BLK
0.8
B
A
C
A/C
COMPRESSOR
CLUTCH
ASSEMBLY
(4.2L)
(5.2L)
Connector
LT GRN
0.35
C100
Connector
G
DK GRN
0.35
Class 2
serial data
A/C
Fuse 30
10A
POWERTRAIN
CONTROL
MODULE
(PCM)
(4.2L)
(5.2L)
Connector 4.2L
Connector 5.3L
C1
C1
See Power
Distribution,
page 10-13.
A/C
compressor
clutch
A/C
compressor
clutch diode
Temperature
switch (opens
above 275
°
F
(136
°
C))
C4
Con-
C5
C1
E3
See Ground
Distribution,
page 14-2.
G107
(4.2L)
(5.3L)
FUSE
BLOCK-
UNDERHOOD
Connector
A/C
compressor
clutch relay
control
* =
4.2L
** =
5.3L
Circuit Schematic
63-2
AIR CONDITIONING: MANUAL (Sensors)
A9
COOLANT
BYPASS
VALVE
Connector
B
A
HVAC
CONTROL
MODULE
Connector
AC
low
pressure
sensor
signal
Coolant
bypass
control
Aux
HVAC
enable
control
Low
reference
54
A/C
REFRIGERANT
PRESSURE
SENSOR
(4.2L) (5.3L)
Connector
1
2
F
B
E
YEL
0.35
GRY/
BLK
0.35
DK BLU
0.35
BLK
0.5
BLK
0.8
BLK
0.35
C100
Connector
A/C LOW
PRESSURE
SWITCH
Connector
GRY
0.35
RED/
BLK
0.35
BLK
0.35
See Ground
Distribution,
page 14.
BLK
1
A2
H
F
C105
Connector
C307
GRY/
BLK
0.35
DK BLU
0.35
5V
reference
RED/
BLK
0.35
GRY
0.35
A
3
B
A/C
refrigerant
pressure
sensor
signal
POWERTRAIN CONTROL
MODULE (PCM)
(4.2L) (5.3L)
Connector 4.2L
Connector 5.3L
41
14
C1
A12
A10
C1
G103
Rear
Shutoff
(Not used)
Circuit Schematic
63-3
AIR CONDITIONING: MANUAL (Air Delivery Controls)
HOT IN RUN
HVAC 1
Fuse 39
10A
A8
BRN
0.35
B5
FUSE
BLOCK-
REAR
Connector
C1
C8
BRN
0.35
HVAC
CONTROL
MODULE
Connector
5 volt
reference
C1
A1
B8
C1
B4
A5
Low
reference
B6
HVAC
CONTROL
MODULE
Connector
See Power
Distribution,
page 10-15.
A
C1
To A on
this page
M
Logic
5
BRN
0.35
6
DK GRN
0.35
7
RECIR-
CULATION
ACTUATOR
Connector
M
Logic
5
BRN
0.35
6
TAN
0.35
10
9
7
MODE
ACTUATOR
Connector
YEL
0.35
Mode door
position
signal
Recirculation
door control
Mode
door
control
Recirc
AC
R Def
Rear DEF
A
From A on
this page
F
From E on
page 63-4
From G on
page 63-4
From F on
page 63-4
YEL
0.35
YEL
0.35
G
YEL
0.35
YEL
0.35
C1
To B on
page 63-4
To D on
page 63-4
To C on
page 63-4
LT BLU/BLK
0.35
LT BLU/BLK
0.35
LT BLU/BLK
0.35
LT BLU/BLK
0.35
LT BLU/BLK
0.35
BRN
0.35
See Power
Distribution,
page 10-15.
Ignition 3
voltage
See Ground
Distribution,
page 14-5
G201
BLK
0.35
AC
RECIRC
LT
GRN
0.35
SP201
D
LT
BLU/
BLK
0.35
10
(Not used)
9
(Not
used)
Circuit Schematic
63-4
AIR CONDITIONING: MANUAL (Air Delivery Controls)
HVAC 1
Fuse 39
10A
HOT IN RUN
E5
BRN
0.35
FUSE
BLOCK-
REAR
Connector
C1
B8
BRN
0.35
HVAC
CONTROL
MODULE
Connector
Processors/Drivers
C1
B3
B2
A3
See Power
Distribution,
page 10-15.
I
To I on
this page
M
Logic
5
BRN
0.35
6
TAN/BLK
0.35
10
9
7
DEFROST
ACTUATOR
Connector
YEL
0.35
M
Logic
5
BRN
0.35
6
DK BLU
0.35
10
9
7
AIR TEMPERATURE
ACTUATOR
LEFT
Connector
YEL
0.35
Left
air temp
door
position
signal
LT GRN/BLK
0.35
A4
Defrost
door
position
signal
To E on
page 63-3
H
To H on
this page
B1
A2
M
Logic
5
BRN
0.35
6
WHT/BLK
0.35
10
9
7
YEL
0.35
DK BLU
0.35
To G on
page 63-3
AIR TEMPERATURE
ACTUATOR
RIGHT
Connector
G
LT
BLU/
BLK
0.35
LT
BLU/
BLK
0.35
LT
BLU/
BLK
0.35
Left
air temp
door
control
Right
air temp
door
position
signal
Right
air temp
door
control
Defrost
door
control
circuit
E
F
To F on
page 63-3
LT
BLU
0.35
I
From I on
this page
D
From D on
page 63-3
C
From C on
page 63-3
B
From B on
page 63-3
H
From H on
this page
Control
mode
Control
temperature
left
Control
temperature
right
Circuit Schematic
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