BLOWER MOTOR CONTROLLER (AZC) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
A Z1 12BK GROUND
B C56 20BR/LG BLOWER MOTOR CONTROL
C C1 12RD BLOWER MOTOR SUPPLY
BLOWER MOTOR RESISTOR BLOCK (MTC) - BLACK 4 WAY
CAV CIRCUIT FUNCTION
H C7 12BK/TN BLOWER MOTOR HIGH DRIVER
L C4 16TN BLOWER MOTOR LOW DRIVER
M1 C5 16LG BLOWER MOTOR M1 DRIVER
M2 C6 14LB BLOWER MOTOR M2 DRIVER
BLOWER MOTOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 C1 12RD BLOWER MOTOR SUPPLY
2 C7 12BK BLOWER MOTOR HIGH DRIVER
BODY CONTROL MODULE C1 - GRAY 26 WAY
CAV CIRCUIT FUNCTION
1 Z2 20BK/OR GROUND
2 G52 20YL HEADLAMP SWITCH MUX
3 E19 20RD PANEL LAMPS DIMMER SIGNAL
4- -
5 G70 20BR/TN (BUILT-UP-EXPORT LHD RHD) HOOD AJAR SWITCH SENSE
6 G26 20LB KEY-IN IGNITION SWITCH SENSE
7 G76 18TN/YL RIGHT REAR DOOR AJAR SWITCH
SENSE
8 E2 20OR PANEL LAMPS DRIVER
9 E2 20OR PANEL LAMPS DRIVER
10 E2 20OR PANEL LAMPS DRIVER
11 - -
12 E2 20OR PANEL LAMPS DRIVER
13 E2 20OR PANEL LAMPS DRIVER
8Wa - 80 - 8 8Wa-80 CONNECTOR PIN-OUTSWJ
IGNITION SWITCH C1 - WHITE 6 WAY
CAV CIRCUIT FUNCTION
1 A41 12YL IGNITION SWITCH OUTPUT (START)
2 A2 12PK/BK FUSED B(+)
3 A22 12BK/OR IGNITION SWITCH OUTPUT (RUN)
4 A1 12RD FUSED B(+)
5 A31 12RD/BK IGNITION SWITCH OUTPUT (RUN-ACC)
6 A21 12DB IGNITION SWITCH OUTPUT (RUN-START)
IGNITION SWITCH C2 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 G26 20LB KEY-IN IGNITION SWITCH SENSE
2 Z1 20BK GROUND
INPUT SPEED SENSOR (4.7L) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 T52 18RD/BK INPUT SPEED SENSOR SIGNAL
2 T13 18DB/BK SPEED SENSOR GROUND
INSTRUMENT CLUSTER - WHITE 12 WAY
CAV CIRCUIT FUNCTION
1 L61 20LG LEFT TURN SIGNAL
2 L60 20TN RIGHT TURN SIGNAL
3- -
4 G7 20WT/OR VEHICLE SPEED SIGNAL
5 G9 20GY/BK RED BRAKE WARNING INDICATOR DRIVER
6 F33 20PK/RD FUSED B(+)
7 G5 20DB/WT FUSED IGNITION SWITCH OUTPUT (RUN-START)
8- -
9 Z1 20BK GROUND
10 D25 20YL/VT/RD PCI BUS
11 Z2 20BK/OR GROUND
12 T107 20BK/RD PART TIME 4 WHEEL DRIVER INDICATOR DRIVER
WJ8Wa-80 CONNECTOR PIN-OUTS 8Wa - 80 - 69
SENTRY KEY IMMOBILIZER MODULE - BLACK 6 WAY
CAV CIRCUIT FUNCTION
1 M1 20PK FUSED B(+)
2 Z2 20BK/OR GROUND
3 G5 20DB/WT FUSED IGNITION SWITCH OUTPUT (RUN-START)
4- -
5 D25 20YL/VT/BK PCI BUS
6- -
SPEED CONTROL SWITCH NO. 1 - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1- -
2 K4 20BK/LB SENSOR GROUND
3 V37 20RD/LG SPEED CONTROL SWITCH SIGNAL
4- -
SPEED CONTROL SWITCH NO. 2 - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1- -
2 K4 20BK/LB SENSOR GROUND
3 V37 20RD/LG SPEED CONTROL SWITCH SIGNAL
4- -
WJ8Wa-80 CONNECTOR PIN-OUTS 8Wa - 80 - 105
SHIFT
LEVER
POSITIONTRANSMISSION CLUTCHES AND BANDS OVERDRIVE CLUTCHES
FRONT
CLUTCHFRONT
BANDREAR
CLUTCHREAR
BANDOVER-
RUNNING
CLUTCHOVER-
DRIVE
CLUTCHDIRECT
CLUTCHOVER-
RUNNING
CLUTCH
Reverse X X X
Drive -
FirstXXXX
Drive -
SecondXX X X
Drive -
ThirdXX XX
Drive -
FourthXX X
Manual
SecondXXXXX
Manual
FirstXXX X X
Note that the rear clutch is applied in all forward
ranges (D, 2, 1). The transmission overrunning clutch
is applied in first gear (D, 2 and 1 ranges) only. The
rear band is applied in 1 and R range only.
Note that the overdrive clutch is applied only in
fourth gear and the overdrive direct clutch and over-
running clutch are applied in all ranges except fourth
gear.
For example: If slippage occurs in first gear in D
and 2 range but not in 1 range, the transmission
overrunning clutch is faulty. Similarly, if slippage
occurs in any two forward gears, the rear clutch is
slipping.
Applying the same method of analysis, note that
the front and rear clutches are applied simulta-
neously only in D range third and fourth gear. If the
transmission slips in third gear, either the front
clutch or the rear clutch is slipping.
If the transmission slips in fourth gear but not in
third gear, the overdrive clutch is slipping. By select-
ing another gear which does not use these clutches,
the slipping unit can be determined. For example, if
the transmission also slips in Reverse, the front
clutch is slipping. If the transmission does not slip in
Reverse, the rear clutch is slipping.
If slippage occurs during the 3-4 shift or only in
fourth gear, the overdrive clutch is slipping. Simi-
larly, if the direct clutch were to fail, the transmis-
sion would lose both reverse gear and overrun
braking in 2 position (manual second gear).If the transmission will not shift to fourth gear, the
control switch, overdrive solenoid or related wiring
may also be the problem cause.
This process of elimination can be used to identify
a slipping unit and check operation. Proper use of
the Clutch and Band Application Chart is the key.
Although road test analysis will help determine the
slipping unit, the actual cause of a malfunction usu-
ally cannot be determined until hydraulic and air
pressure tests are performed. Practically any condi-
tion can be caused by leaking hydraulic circuits or
sticking valves.
Unless a malfunction is obvious, such as no drive
in D range first gear, do not disassemble the trans-
mission. Perform the hydraulic and air pressure tests
to help determine the probable cause.
DIAGNOSIS AND TESTING - HYDRAULIC
PRESSURE TEST
Hydraulic test pressures range from a low of one
psi (6.895 kPa) governor pressure, to 300 psi (2068
kPa) at the rear servo pressure port in reverse.
An accurate tachometer and pressure test gauges
are required. Test Gauge C-3292 has a 100 psi range
and is used at the accumulator, governor, and front
servo ports. Test Gauge C-3293-SP has a 300 psi
range and is used at the rear servo and overdrive
ports where pressures exceed 100 psi.
WGAUTOMATIC - 44RE 21s - 47
