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39-2
AUTOMATIC TRANSMISSION CONTROLS
See Ground
Distribution,
page 14-6.
See Dash
Fuse Box,
page 11-2.
55
22
BLU/GRN
BLU/YEL
TRANSMISSION
SPEED SENSOR
2WD
4WD
E-44
Connector
2
1
Transmission speed
sensor input
C-14
BACK UP/
TURN
15A
WHT/GRN
23
H-4
Connector
DASH
FUSE
BOX
AUTOMATIC
TRANSMISSION
MODE
SWITCH
Transmission position inputs
PNK/BLK
E-41
Connector
7
6
3
77
79
78
76
HOT IN ON OR START
WHT/GRN
POWERTRAIN
CONTROL
MODULE (PCM)
Solid State:
Do not check
resistance.
BLK
E-21
E-41
Connector
5
WHT/GRN
8
PNK/YEL
RED/
YEL
8
H-11
Connector
WHT
ORN/BLK
GRY
PNK
LT BLU
WHT/GRN
–
+
BRAIDED
WIRE
E-35
Connector
76
BLU
TPS 1
input
65
BLU/WHT
TPS 2
input
73
WHT/BLU
CKP
input
74
BLU/RED
ECT
input
E-34
Connector
E-35
Connector
Engine Controls
Torque-
On-
Demand
(T.O.D.)
System
Page 37-3
Torque-
On-
Demand
(T.O.D.)
System
Page 37-3
PNK/YEL
YEL/
VIO
WHT/GRN
PNK/BLU
RED/
BLK
PNK
PNK
WHT/GRN
P
R
N
D
3
2
1
P
R
N
D
3
2
1
P
R
N
D
3
2
1
P
R
N
D
3
2
1
See
Back-up
Lamps,
A/T Shift
Indicator
E-34
Connector
Page 24-3
Page 24-5
Circuit Schematic
39-3
AUTOMATIC TRANSMISSION CONTROLS
TORQUE
CONVERTER
CLUTCH
PWM
SOLENOID
TRANS-
MISSION
FLUID
TEMPER-
ATURE
SENSOR
PRESSURE
CONTROL
SOLENOID
Transmission
fluid
temperature
sensor input
B+
(+)
1
4
2
E-40
Connector
51
66
47
1
4
E-40
Connector
VIO/RED
Sensor
ground
20
BRAKE
BAND
APPLY
SOLENOID
SHIFT
SOLENOID
B
B+
3
GRN/RED
SHIFT
SOLENOID
A
2
43
GRY/WHT
E-42
Connector
5
Shift
solenoid A
control
7
BRN/YEL
10
Brake
band
apply
solenoid
control
6
GRN
E-42
Connector
E-35
Connector
31
E-35
Connector
43
E-34
Connector
RED/WHT
E-35
Connector
E-34
Connector
E-35
Connector
BRN/BLU
RED/BLK
VIO/WHT
POWERTRAIN
CONTROL
MODULE (PCM)
Solid State:
Do not check
resistance.
POWER-
TRAIN
CONTROL
MODULE
(PCM)
Solid State:
Do not check
resistance.
AUTOMATIC
TRANSMISSION
(–)
Shift
solenoid
B control
E-42
Connector
E-40
Connector
3
E-40
Connector
BRN/WHT
33
Torque
converter
clutch PWM
solenoid
control
E-42
Connector
E-34
Connector
E-35
Connector
Circuit Schematic
39-4
AUTOMATIC TRANSMISSION CONTROLS
(Refer to Section 201 for photographs.)
Component
Photo No.
Automatic Transmission
Mode Switch
Left side of automatic transmission
101
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Switch
Below left side of I/P
51
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dash Fuse Box
Behind left I/P side trim panel
42
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Link Connector (DLC)
C-39 (16-BLK)
Below left side of I/P, near engine hood release
45
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse/Relay Box
Right side of engine compartment
8
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Meter Assembly
Left side of I/P
55
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multi-plexed Indicator
Control Unit
Under rear of console
72
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PCM Main Relay
In the fuse & relay box
12
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Powertrain Control Module
(PCM)
Left side of engine compartment
26
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmission Speed Sensor
(2WD)
On top of the transmission
107
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmission Speed Sensor
(4WD)
On top of the transmission
95
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector
E-40 (4-GRY)
Left side of transmission
101
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E-41 (8-BLK)
Left side of transmission
101
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E-42 (7-BLK)
Left side of transmission
102
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-11 (19-BLK)
Behind left kick panel
46
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-4 (52-GRY)
Left side of engine compartment
31
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-6 (16-BLU)
Left side of engine compartment
31
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-8 (20-BLU)
Behind right kick panel
61
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-14 (19-BLK)
Behind right kick panel
62
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-17 (12-WHT)
Behind right kick panel
61
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-18 (22-BLK)
Behind right kick panel
61
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I-10 (14-GRY)
Center of I/P
66
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I-22 (14-GRN)
Top of meter assembly
54
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I-24 (30-GRN)
Top of meter assembly
54
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I-31 (4-WHT)
Below left side of I/P
51
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground
B-9
Under center console
71
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-10
At the rear of the battery tray, right side of engine compartment
15
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .
C-26
Left side of engine compartment
25
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E-21
Left side of engine
24
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E-23
Right side of engine
19
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P-10
Right side of engine compartment
15
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Operation
The powertrain control module (PCM) receives inputs
from switches and sensors, and controls the functions
of transmission mode. The multi-plexed indicator con-
trol unit also controls the “POWER DRIVE”, “WINTER
DRIVE”, “A/T OIL TEMP”, and “CHECK TRANS” indi-
cator lights and allows for diagnostic testing through the
Data Link Connector, (DLC).
Refer to Section 7 of the Workshop Manual for further
transmission diagnosis.
Component Location Index
HORNS
Component Index
Alarm and Relay Control Unit
Fuse/Relay Box
Left Horn
Right Horn
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