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24-0
ENGINE CONTROLS: 5.3L
YEL
0.35
DK GRN
0.35
BLK
0.8
IGN-O
Fuse 47
10A
HOT IN ACCY, RUN AND START
C1
58
FUSE
BLOCK –
REAR
Connector
59
1
Class 2
serial
data
HOT AT ALL TIMES
HOT IN RUN AND START
FUSE
BLOCK –
UNDERHOOD
Connector
C1
C1
E7
PCM B
Fuse 10
20A
A7
PCM 1
Fuse 28
10A
C5
HOT IN START
CRANK
Fuse 17
10A
F6
C2
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
Class 2
serial
data
Ground
20
Battery
positive
voltage
59
Crank
voltage
C1
19
Ignition 1
voltage
C1
75
Ignition O
voltage
G108
BLK
3
Data Lines
Data Lines
ORN
0.8
PPL
0.35
PNK
0.5
PNK
0.35
C107
Connector
A1
ORN
0.8
D8
57
ORN
0.8
ORN
0.8
C107
Connector
C4
PNK
0.35
PNK
0.35
Battery
positive
voltage
40
C1
1
Ground Ground Ground
BLK
0.8
BLK
0.8
BLK
0.8
40
C2
C1
C2
See Ground
Distribution,
page 14-3.
See Power
Distribution,
page 10-12.
See Power
Distribution,
page 10-12.
See Power
Distribution,
page 10-14.
See Power
Distribution,
page 10-3.
Circuit Schematic
24-1
ENGINE CONTROLS: 5.3L
HOT IN RUN AND START
FUSE
BLOCK –
UNDERHOOD
Connector
IGN E
Fuse 22
10A
B6
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
46
PNK
0.35
MALFUNCTION
INDICATOR
LAMP (MIL)
(SERVICE
ENGINE
SOON)
INSTRUMENT
PANEL
CLUSTER
(IPC)
Connector
MIL
control
B4
B7
BRN/WHT
0.35
C2
C107
Connector
C5
See Power
Distribution,
page 10-13.
C2
See Power
Distribution,
page 10-13.
PNK
0.35
See
Indicators
BRN/WHT
0.35
54
C2
32
48
GRY
0.35
MANIFOLD
ABSOLUTE
PRESSURE
(MAP)
SENSOR
Connector
B
A
C
ORN/BLK
0.35
GRY
0.35
80
Low
reference
C1
74
YEL
0.35
ENGINE
COOLANT
TEMPERATURE
(ECT)
SENSOR
Connector
1
2
ECT
sensor
signal
Low
reference
MAP
sensor
signal
5 volt
reference
C1
LT GRN
0.35
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
Circuit Schematic
24-2
ENGINE CONTROLS: 5.3L
C1
HOT AT ALL TIMES
PCM B
Fuse 10
20A
FUSE
BLOCK –
UNDERHOOD
Connector
C3
F3
39
FUEL
PUMP
FUEL PUMP
AND SENDER
ASSEMBLY
Connector
Starter
enable
relay
control
C
B
23
Low
reference
M
F/PMP
RELAY
41
C1
F3
A11
FUEL
LEVEL
SENSOR
Full 250 OHMS
Empty 40 OHMS
A
D
9
54
Fuel
level
sensor
signal
DK GRN/WHT
0.35
BLK
0.8
GRY
0.8
BLK
0.8
PPL
0.35
BLK
0.35
YEL/BLK
0.35
Fuel
pump
relay
control
Starting
System
DK GRN/WHT
0.35
PPL
0.35
BLK
0.35
C11
D1
G305
G107
POWER-
TRAIN
CONTROL
MODULE
(PCM)
Connector
PPL
0.35
BLK
0.35
C3
C10
BLK
0.35
BLK
0.35
C2
See Power
Distribution,
page 10-3.
See Ground
Distribution,
page 14-2.
See
Ground
Distribution,
page 14-7.
BLK
0.8
46
C2
64
FUEL TANK
PRESSURE
(FTP)
SENSOR
Connector
B
C
GRY
0.35
Fuel
tank
pressure
sensor
signal
C1
DK GRN
0.35
5V
reference
A
C10
GRY
0.35
A3
C9
C101
Connector
A8
C107
Connector
DK GRN
0.35
GRY
0.35
DK GRN
0.35
BLK
0.35
C2
Circuit Schematic
24-3
ENGINE CONTROLS: 5.3L
PNK/BLK
0.5
BLK
0.5
PNK
0.5
PNK
0.5
INJ A
Fuse 55
15A
HOT IN RUN AND START
FUSE
BLOCK –
UNDERHOOD
Connector
C1
D12
Fuel
injector 7
control
A
FUEL
INJECTOR
7
Connector
B
Fuel
injector 5
control
A
FUEL
INJECTOR
5
Connector
B
Fuel
injector 3
control
A
FUEL
INJECTOR
3
Connector
B
36
Fuel
injector 1
control
A
FUEL
INJECTOR
1
Connector
B
Ignition
System
PNK
0.5
PNK
0.5
PNK
0.5
PNK
0.5
43
76
3
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
BLK/WHT
0.5
RED/BLK
0.5
C1
Circuit Schematic
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