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22-2
CHARGING SYTEM
(Refer to Section 201 for photographs.)
Component
Photo No.
Generator (4.2L)
Left Front of Engine
7
. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Generator (5.3L)
Top Left of Engine
8
. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel Cluster
(IPC)
On the left side of the IP, above the steering column
59
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
Powertrain Control Module
(PCM) (4.2L)
Left front of engine
5
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Powertrain Control Module
(PCM) (5.3L)
Left front of engine compartment
25
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground
G101
Left side of engine compartment
4
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G106
Left front wheel well
34
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G110 (4.2L)
Lower left side of engine
37
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G110 (5.3L)
Lower left side of engine
38
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Location Index
23
ENGINE CONTROLS: 4.2L
A/C Refrigerant Pressure Sensor (4.2L)
Accelerator Pedal Position (APP) Sensor (4.2L)
Camshaft Actuator Solenoid Assembly (4.2L)
Camshaft Position (CMP) Sensor (4.2L)
Cooling Fan
Crankshaft Position (CKP Sensor (4.2L)
Electronic Brake Control Module (EBCM)
Engine Coolant Temperature (ECT) Sensor (4.2L)
Engine Oil Pressure (EOP) Switch (4.2L)
Evaporative Emission (EVAP) Canister Purge Solenoid
(4.2L)
Evaporative Emission (EVAP) Canister Vent Solenoid
Fuel Injector 1 (4.2L)
Fuel Injector 2 (4.2L)
Fuel Injector 3 (4.2L)
Fuel Injector 4 (4.2L)
Fuel Injector 5 (4.2L)
Fuel Injector 6 (4.2L)
Fuel Pump and Sender Assembly
Fuel Tank Pressure (FTP) Sensor
Fuse Block-Rear
Fuse Block-Underhood
Heated Oxygen Sensor (HO2S) 1 (4.2L)
Heated Oxygen Sensor (HO2S) 2 (4.2L)
Instrument Panel Cluster (IPC)
Intake Air Temperature (IAT) Sensor (4.2L)
Knock Sensor (KS) 1 (Front) (4.2L)
Knock Sensor (KS) 2 (Front) (4.2L)
Manifold Absolute Pressure (MAP) Sensor (4.2L)
Powertrain Control Module (PCM) (4.2L)
Stop Lamp Switch
Throttle Body (4.2L)
Vehicle Speed Sensor (VSS) (2WD)
Vehicle Speed Sensor (VSS) (4WD)
Component Index
23-0
ENGINE CONTROLS: 4.2L
YEL
0.35
DK GRN
0.35
BLK
3
IGN-O
Fuse 47
10A
HOT IN ACCY, RUN AND START
C1
59
C3
17
FUSE
BLOCK –
REAR
Connector
58
65
C2
HOT AT ALL TIMES
ETC
Fuse 23
10A
HOT IN RUN AND START
FUSE
BLOCK –
UNDERHOOD
Connector
C1
A2
C1
E7
PCM B
Fuse 10
20A
A7
PCM 1
Fuse 28
15A
F5
HOT IN START
CRANK
Fuse 17
10A
F6
C2
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
Class 2
serial data
Ground
20
Battery
positive
voltage
31
Crank
voltage
C1
19
Ignition 1
voltage
Ignition 1
voltage
C1
21
Igntion
voltage
See Ground
Distribution,
page 14-3.
G108
BLK
3
Data Lines
Data Lines
ORN
0.8
PPL
0.35
PNK
0.5
PNK
0.35
PNK
0.35
C100
Connector
D
PNK
0.5
PNK
0.5
Class 2
serial data
PNK
0.35
C2
F4
(Not
used)
See Power
Distribution,
Page 10-17.
See Power
Distribution,
page 10-17.
See Power
Distribution,
page 10-12.
See Power
Distribution,
Page 10-3.
Circuit Schematic
23-1
ENGINE CONTROLS: 4.2L
C1
3
HOT AT ALL TIMES
ST/LP
Fuse 12
25A
HOT IN RUN AND START
FUSE
BLOCK –
UNDERHOOD
Connector
C2
C9
IGN E
Fuse 22
10A
B6
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
7
Stop lamp
switch
signal
ORN
1
PNK
0.35
MALFUNCTION
INDICATOR
LAMP
(SERVICE
ENGINE SOON)
INSTRUMENT
PANEL
CLUSTER
(IPC)
Connector
Malfunction
indicator
lamp control
VEH STOP
Fuse 34
15A
FUSE
BLOCK
REAR
Connector
C1
B5
C1
B4
B4
B7
WHT
1
B
A
BRN/WHT
0.35
LT BLU
0.5
LT BLU
0.5
WHT
1
STOP
LAMP
SWITCH
Connector
See Power
Distribution,
page 10-13.
See Power
Distribution,
page 10-13.
PNK
0.35
Trailer
Wiring
See
Indicators
See Power
Distribution,
page 10-1.
See Power
Distribution,
page 10-1.
Stop
lamp
pole
Turn and
Hazard
Lights
Circuit Schematic
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