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23-10
ENGINE CONTROLS: 4.2L
O2
Fuse 29
10A
HOT IN RUN AND START
FUSE
BLOCK –
UNDERHOOD
Connector
C1
C2
HO2S
low
signal
bank 1
sensor 1
C
31
HO2S
heater
low
control
bank 1
sensor 1
D
PNK
0.8
23
32
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
HO2S
high
signal
bank 1
sensor 1
HEATED
OXYGEN
SENSOR
(HO2S)
SENSOR 1
Connector
DK GRN
0.8
A
TAN
0.8
PPL/WHT
0.8
B
HO2S
low
signal
bank 1
sensor 2
C
30
HO2S
heater
low
control
bank 1
sensor 2
D
26
18
HO2S
high
signal
bank 1
sensor 2
HEATED
OXYGEN
SENSOR
(HO2S)
SENSOR 2
Connector
A
TAN/WHT
0.8
PPL/WHT
0.8
B
BLK/WHT
0.8
C2
PNK
0.8
Circuit Schematic
23-11
ENGINE CONTROLS: 4.2L
DK GRN/
WHT
0.35
ENG 1
Fuse 26
10A
HOT IN RUN AND START
FUSE
BLOCK –
UNDERHOOD
Connector
C1
B5
PNK
0.35
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
A5
PNK
0.35
DK GRN
0.35
62
C1
61
FUEL
TANK
PRESSURE
(FTP)
SENSOR
Connector
B
C
GRY
0.35
Fuel
tank
pressure
sensor
signal
5 volt
reference
12
Low
reference
C10
C9
BLK
0.35
C11
C101
Connector
DK GRN
0.35
GRY
0.35
BLK
0.35
A
A
EVAPORATIVE
EMISSION
(EVAP)
CANISTER
PURGE
SOLENOID
Connector
B
EVAPORATIVE
EMISSION
(EVAP)
CANISTER
VENT
SOLENOID
Connector
A
B
WHT
0.35
F4
WHT
0.35
B9
C3
C1
20
WHT
0.35
17
C2
WHT
0.35
Evap
canister
vent
solenoid
control
Evap
canister
purge
solenoid
control
Circuit Schematic
23-12
ENGINE CONTROLS: 4.2L
2
10
25
32
C1
1
B1
2
VEHICLE
SPEED
SENSOR
(VSS)
Connector
ELECTRONIC
BRAKE
CONTROL
MODULE
(ECBM)
Connector
INSTRUMENT
PANEL
CLUSTER
(IPC)
Connector
LT GRN/BLK
0.35
YEL/BLK
0.35
DK GRN/WHT
0.35
1
2
C2
B9
PPL/WHT
0.35
Vehicle
speed
signal
Vehicle
speed
signal
C2
C101
Connector
LT GRN/BLK
0.35
YEL/BLK
0.35
PPL/WHT
0.35
VSS
low
signal
VSS
high
signal
Vehicle
speed
signal
Vehicle
speed
signal
C2
C310
Connector
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
Twisted
Twisted
A
B
4WD
only
Circuit Schematic
23-13
ENGINE CONTROLS: 4.2L
TAN/
BLK
0.35
TAN/BLK
0.35
GRY/BLK
0.35
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
29
Oil
pressure
switch
signal
4
4WD
low
signal
11
Delivered
torque
signal
12
Requested
torque
signal
C2
A
B
ENGINE
OIL
PRESSURE
(EOP)
SWITCH
POWERTRAIN
CONTROL
MODULE
(PCM)
Connector
Cruise
control
set/coast
switch
signal
Cruise
control
resume/
accel
switch
signal
Cruise
ETC/TCC
brake
signal
Cruise
control
on
switch
signal
PPL
0.35
Transfer
Case
Control
DK BLU
0.35
GRY/BLK
0.35
PPL
0.35
GRY
0.35
58
C3
6
5
17
28
C1
Anti-lock Brake
System (ABS),
2WD only
Cruise Control
ORN/BLK
0.35
C2
C1
Low
reference
Cruise Control
Circuit Schematic
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