Page 2229 of 2453

5AT(diag)-112
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
5CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmis-
sion.
3) Remove the transmission connector from
bracket.
4) Lift-up the vehicle and place it on rigid
racks.
NOTE:Raise all wheels off floor.
5) Drain the ATF.
CAUTION:Do not drain ATF until it cools down.
6) Remove the oil pan, and disconnect the
connector from control valve body connector.
7) Measure the resistance between transmis-
sion connector and control valve body connec-
tor.
Connector & terminal
(T4) No. 12 — (T5) No. 1:
(T4) No. 6 — (T6) No. 2:
Is the resistance less than 1
Ω?
Replace the con-
trol valve body.
Control Valve
Body.>
Repair the open
circuit of harness
between transmis-
sion connector
and control valve
body connector.
6CHECK POOR CONTACT.
Check poor contact of ATF temperature sensor
1 circuit.
Is there poor contact? Repair the poor
contact.
Replace the TCM.
Tr a n s m i s s i o n C o n -
trol Module
(TCM).>
Step Check Yes No
Page 2232 of 2453

5AT(diag)-115
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
AM:DTC P1718 AT CAN COMMUNICATION CIRCUIT
NOTE:
DTC P1718 AT CAN communication circuit, refer to “LAN System”.
TIC TROUBLE CODE (DTC), OPERATION, Subaru Select Monitor.>
AN:DTC P1798 GEAR 1 ENGINE BRAKE
NOTE:
Refer to DTC P0771 for diagnostic procedure.
PERFORMANCE OR STUCK OFF, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
5CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmis-
sion.
3) Remove the transmission connector from
bracket.
4) Lift-up the vehicle and place it on rigid
racks.
NOTE:Raise all wheels off floor.
5) Drain the ATF.
CAUTION:Do not drain ATF until it cools down.
6) Remove the oil pan, and disconnect the
connector from control valve body connector.
7) Measure the resistance between transmis-
sion ground and control valve body connector.
Connector & terminal
(T5) No. 1 — Chassis ground:
(T6) No. 2 — Chassis ground:
Is the resistance more than 1
MΩ?
Replace the con-
trol valve body.
Control Valve
Body.>
Repair the short
circuit of harness
between transmis-
sion connector
and control valve
body connector.
6CHECK POOR CONTACT.
Check poor contact of ATF temperature sensor
1 circuit.
Is there poor contact? Repair the poor
contact.
Replace the TCM.
Tr a n s m i s s i o n C o n -
trol Module
(TCM).>
Step Check Yes No
Page 2297 of 2453
WI-13
Basic Diagnostic Procedure
WIRING SYSTEM
F: ABBREVIATION IN WIRING DIA-
GRAMS
Abbr. Full name
A/C Air conditioner
A/FAir/Fuel
(Air fuel ratio sensor)
ABS Anti-lock Brake System
ACC Accessor y
AT E l e c t r o n i c a l l y c o n t r o l l e d f u l l y - a u t o m a t i c
AUX Auxiliar y
AW D A ll W he e l D r i ve
CAN Controller Area Network
CPC Canister Purge Control
CPU Central Processing Unit
ECM Engine Control Module (ECM)
EEPROMElectronically Erasable and Programma-
ble Read Only Memory
F/B Fuse & Relay box
FWD Front Wheel Drive
H/L Headlight
I/F Interface
IG Ignition
L, LH Left Hand
LCD Liquid Crystal Display
M/B Main fuse box
MFD Multi Function Display
OP Optional Parts or Open
PWM Pulse Width Modulation
R, RH Right Hand
SBF Slow Blow Fuse
ST Starter
TCS Traction Control System
TCM AT Control Module
TPM Tire Pressure Monitor
TV Television
U, UP Up
VDC Vehicle Dynamics Control
VVL Variable Valve Lift
Page 2313 of 2453
WI-29
Ground Circuit
WIRING SYSTEM
WI-08037
GND-08GND-08
(GLAY)B11
125678
131415169101112
34
17181920
BW A16
B12
T3
WB
5
YL
7
WR
YLWR
WWL
B18B16
B55B54A: B:TCM
B
B
B
W
REARWHEELSPEEDSENSOR
TORQUECONVERTERTURBINESENSOR 1
AT1
1
23
WLR
B11
T47
BW
WB
12345678
(BROWN)B12(GLAY)B:B55
123410 11 1219 20 21135614 1578916 17 1822 23 24
A:B54
12 7 8 9563410 11 1219 20 2113 14 15 16 17 1822 23 24
AT1
123
Page 2335 of 2453
WI-51
AT Control System
WIRING SYSTEM
WI-08057
A13
A23
A18
A24
A9
A17
A15
B7
A2
A11
A21
A12
B8
B12
B14
B3
B4
B20
B13
A16
B18
B17
A6
A22
B16A5
A14
A19
B21
B23
TCM
B22
TORQUE CONVERTER TURBINE SPEED SENSOR 1
REAR WHEEL SPEED SENSOR
CONTROL VALVE ASSY
Page 2341 of 2453
WI-57
AT Control System
WIRING SYSTEM
WI-08063
5AT-065AT-06
RG
A22
G
G
V
A9A23
B11
T4
B
19
GW
B23
BW
A16
B
RL
RL
A18
18
RW
RW
A17
15
RB
RB
A15
13
Or
Or
A11
6
RY
RY
A24
17
V
20
RG
16
GW
8
BL
B12
BL
2
WG
A2
WG
5
B55B:B54A:TCM
P
A6
P
11
Lg
A12
Lg
9
W
A21
W
10
L
B8
L
4
WL
B7
WL
1
B
B17
B
3
Y
A13
Y
12
BW
BRYRBOrWR
WG
B20
B12
T3
T5
LB
B22
68
W
B13
1
RW
B14
2
Lg
B3
3
G
WGLBWRWLgG
B4
4
23456
YL
B18
5
WR
YLWR
WWL
B16
7
LBrYGRBGOrGOrBWPRWWB
BRYRBOrWRLYGRBGOrGOrBWPRWRBGWGBBYBRRYRG
RBGWGBBYBRRYRG
WB
7
T6Br
378121296101113168109121411115
CONTROL VALVE ASSY
AT CONTROL
REAR WHEEL SPEED SENSOR
WRWLWB
B
TORQUE CONVERTER TURBINE SPEED SENSOR 1
2
1
3
T1
123
B12
12456783
(BROWN) (GREEN) (GREEN)T5B11(GRAY)
125678
131415169101112
34
17181920
A:B54
(GRAY)B:B55
123410 11 1219 20 21135614 1578916 17 1822 23 24
T1
1234567891011121314151612 7 8 9563410 11 1219 20 2113 14 15 16 17 1822 23 24
T6
324159810711612
Page 2346 of 2453

WI-62
Vehicle Dynamics Control System
WIRING SYSTEM
WI-08068
VDC-03VDC-03
FRONTABS WHEELSPEEDSENSOR LH
B310
209
2741
12
2539
1212
4026
BW
1
GY
46
B
43
BLgLgBLG
BWLgBYPL
RLGY
B15R232R249
B359
GVREARABS WHEELSPEEDSENSOR LH
REARABS WHEELSPEEDSENSOR RHYAW RATE SENSOR
B
9
LgLgBLG
22
LgBYPL
B97
R2
B98
R1
BY
TWISTED PAIR LINETWISTED PAIR LINE
TWISTED PAIR LINE
TWISTED PAIR LINE
TWISTED PAIR LINETWISTED PAIR LINE
TWISTED PAIR LINE
TWISTED PAIR LINE
TWISTED PAIR LINE
TWISTEDPAIR LINE
FRONTABS WHEELSPEEDSENSOR RH
4228
12
GOrGB
GOrGBB6
3420
BYBYBY
STEERINGANGLE SENSOR2
RL
1
GY
4
3
B231
CAN JOINTCONNECTOR
RL
LR
B352
3251
VDC CONTROL MODULE
VDC-01B
VDC-01A
LR
REF. TO GROUNDCIRCUIT [GND-02]REF. TO GROUNDCIRCUIT [GND-03-05]
B38
1234 5678910 11 12 13 14 15 16 17 18 19 20B352
B355
B416
34561278
CAN JOINTCONNECTOR
LR
B355
B
15
4
B38
i3Or
Or
Or
i78
PUSH SWICH (TCS OFF SWITCH)
BY
5
15
131415123456789101112
: TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 1, 2, 5 AND 6: TERMINAL NO. OPTIONAL ARRANGEMENT AMONG 3, 4, 7 AND 8
1*
2*
1*2*
1*2*
1*2*
1*2*1*2*
RL
LR
B359
12345
R232(GRAY) (BLACK)
(BLACK)
B15(GRAY)
B6(GRAY)
R249(GRAY)
12
B310
1234
1516171819202122232425262728293031323334353637383940414245464344568910 11 12 13 147
B97
12345678910 11 12 13 16 17 18 19 201415
i78(BLUE)
B98(BLACK)
123456 78910 1112 13 16 1714 15 18 19 2021222324
B231
1234
CAN JOINTCONNECTOR
B416
1*2*
1*2*
RL
Page 2436 of 2453

WI-152
Bulkhead Wiring Harness (In Engine Compartment)
WIRING SYSTEM
56.Bulkhead Wiring Harness (In Engine Compartment)
A: LOCATION
Connector Connecting to
No. Pole Color Area No. Description
B3 5 Black B-2 Air flow sensor
B6 2 Gray B-2 Front ABS wheel speed sensor RH
B8 5 Black B-4 Front wiper motor
B10 4 Gray B-4 Pressure switch
B11 20 Gray B-3 T4Tr a n s m i s s i o nB12 8 Brown B-3 T3
B14 1 Black B-3 Starter (Magnet)
B15 2 Gray B-4 Front ABS wheel speed sensor LH
B16 2 Gray B-4 Brake fluid level switch
B20 16 Brown B-3 E1
Engine wiring harnessB21 54 Black B-3 E2
B22 16 Brown B-3 E3
B143 20 B-4
Main fuse box (M/B)B144 9 Brown B-4
B145 7 Brown B-4
B146 6 Gray C-4 Washer motor & washer tank
B186 8 B-4 Main fuse box (M/B)
B310 46 Black B-2 VDC control module
B360 16 Gray C-4 F109Through joint connectorB361 14 Gray B-4 F108
B407 2 Black B-5 Paddle light LH
B409 4 Black B-5Wiper relay unitB410 3 Gray B-5
B411 3 Black B-4 Pressure sensor
B417 2 Gray C-3 Vacuum pump
B422 4 Black B-3 Vacuum pump relay
B423 8 Black B-3 Relay box
B430 2 Black B-2 Paddle light RH
B432 8 Black B-4 SBF holder
B433 2 B-4 Main fuse box (M/B)
: White or natural color
Connector Connecting to
No. Pole Color Area No. Description
AB13 2 Yellow C-3 Front sub sensor LH
AB16 2 Yellow C-1 Front sub sensor RH
Connector Connecting to
No. Pole Color Area No. Description
E3 16 Brown A-3 B22 Bulkhead wiring harness
E24 4 Light gray C-3 Front oxygen (A/F) sensor LH
E25 4 Dark gray B-4 Rear oxygen sensor LH
E47 4 Light gray C-3 Front oxygen (A/F) sensor RH
E61 4 Dark gray C-3 Rear oxygen sensor RH