2004 SUBARU FORESTER diagram

4AT(H4SO)-71
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
M: DTC 76 2-4 BRAKE DUTY SOLENOID
DTC DETECTING CONDITION:
The output signal circuit of 2-4 brake duty solenoid is open or shorted.
TROUBLE SYMPTOM:
Excessive shift shock.
WIRING DIAGRAM:
Step Check Yes No
1 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmis-
sion and TCM.
3) Measure the resistance of harness
between TCM and transmission connector.
Connector & terminal
(B54) No. 18 — (B11) No. 9:Is the resistance less than 1
Ω?Go to step 2.Repair the open
circuit in harness
between TCM and
transmission con-
nector.
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND CHASSIS GROUND.
Measure the resistance of harness between
TCM and chassis ground.
Connector & terminal
(B54) No. 18 — Chassis ground:Is the resistance more than 1
MΩ?Go to step 3.Repair the short
circuit in harness
between TCM and
transmission con-
nector.
3 CHECK 2-4 BRAKE DUTY SOLENOID.
Measure the resistance between transmission
connector receptacle’s terminals.
Te r m i n a l s
(T4) No. 16 — No. 9:Is the resistance 2.0 — 4.5 Ω? Go to step 4.Go to step 10.
4 PREPARE SUBARU SELECT MONITOR.Do you have a Subaru Select
Monitor?Go to step 7.Go to step 5.
AT-00588
18
B54
B11
AT 7
T4 TCM
TRANSMISSION
1234
56789
101112
13
1415 16 17 18
1920
2122 23
24
B54B11
1
234
56
78
9
1314
15
20
19 1716 10 1112
18
2-4
BRAKE DUTY
SOLENOID
9

4AT(H4SO)-74
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
N: DTC 77 LOCK-UP DUTY SOLENOID
DTC DETECTING CONDITION:
The output signal circuit of lock-up duty solenoid is open or shorted.
TROUBLE SYMPTOM:
No “lock-up” (after engine warm-up).
WIRING DIAGRAM:
AT-00589

7
TRANSMISSION
B54TCM
AT 3
13T4
B11
LOCK-UP
DUTY
SOLENOID
B54
12
789 56 3410 11 12
19 20 2113 14 15 16 17 18
22
23
24
B11
125678
131415169101112
34
17181920

4AT(H4SO)-78
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
O: DTC 79 TRANSFER DUTY SOLENOID
DTC DETECTING CONDITION:
The output signal circuit of transfer duty solenoid is open or shorted.
TROUBLE SYMPTOM:
Tight corner braking phenomenon is occurred.
WIRING DIAGRAM:
Step Check Yes No
1 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from TCM and
transmission.
3) Measure the resistance of harness
between TCM and transmission connector.
Connector & terminal
(B54) No. 6 — (B11) No. 6:Is the resistance less than 1
Ω?Go to step 2.Repair the open
circuit in harness
between TCM and
transmission con-
nector.
AT-00590
-
6
TRANSMISSION
B54TCM
AT 4
6T4
B11
TRANSFER
DUTY
SOLENOID
B54
12
789 56 3410 11 12
19 20 2113 14 15 16 17 18
22
23
24
B11
125678
131415169101112
34
17181920

4AT(H4SO)-81
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
P: DTC 93 REAR VEHICLE SPEED SENSOR
DTC DETECTING CONDITION:
The input signal circuit of TCM is open or shorted.
TROUBLE SYMPTOM:
 No lock-up.
 Tight corner braking phenomenon is occurred.
WIRING DIAGRAM:
AT-01828
19
20
B11
B299
T4
TCMB55 B:
B24
A19
SHIELD AND
SENSOR GROUND
JOINT CONNECTOR
LHD: LHD MODEL
: RHD MODEL
REAR VEHICLE
B55
123 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24
B11
12 34
5678
9
13 14 15
20 19 1716 10 11 12
18
SPEED SENSOR
B54
1234 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24
B299
12345678
B54 A:
RHD
61
2
RHD 8
LHD3
7
A:
B:

4AT(H4SO)-84
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
14.Diagnostic Procedure without Diagnostic Trouble Code (DTC)
A: CHECK FWD SWITCH
DETECTING CONDITION:
 The LED does not come on even if FWD switch is ON.
 The FWD switch circuit is open or short.
WIRING DIAGRAM:
 LHD model
AT-01829
BATTERY
1234
56789
10 1112
13 14 15 16 17 18
192021
2223 241234
56789
101112
13
1415 16 17 18
19
202122 23
24
123456
78 9 10 1112
13
14
15 16 17
181920
21
2223
24
2526
272829
30
1234
578
910112324
121314
156
16 17 1819
20 2122
SBF-4 SBF-1
No.14
IGNITION
SWITCH
FWDi10
i2
B37
B55 B:B56TCM C:
F45
B62
F27
22
9
36
8
35
C2
B20
COMBINATION
METER
E
E
FWD SWITCH
59
i3
B38
123 4
57
8
91011
121314
156
16
219
32
B38
1234
5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
2556789
1011121314
1516171819
2021222324
252627282936
3512
34
3031323334
F27
B55 B56
i10B37F45B:
C:

4AT(H4SO)-89
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
E: CHECK KICK–DOWN SWITCH
DETECTING CONDITION:
The kick down switch circuit is open or shorted.
TROUBLE SYMPTOM:
No kick-down occurs (when the throttle is fully opened).
WIRING DIAGRAM:
Step Check Yes No
1 CHECK KICK-DOWN SWITCH OPERATION.
Select “Current Data Display” in Subaru Select
Monitor.When the accelerator pedal is
fully depressed, does “ON” dis-
played?Go to step CHECK
POWER MODE
SWITCH. 4AT(H4SO)-91,
CHECK POWER
MODE SWITCH,
Diagnostic Proce-
dure without Diag-
nostic Trouble
Code (DTC).>Go to step 2.
2 CHECK KICK-DOWN SWITCH GROUND
LINE.
1) Disconnect the connector from kick-down
switch.
2) Measure the resistance of harness connec-
tor between kick-down switch and chassis
ground.
Connector & terminal
(B129) No. 1 — Chassis ground:Is the resistance less than 1
Ω?Go to step 3.Repair the open
circuit in harness
between kick-
down switch and
chassis ground.
3 CHECK KICK-DOWN SWITCH.
Measure the resistance for kick-down switch
when depressing the accelerator pedal.
Te r m i n a l s
No. 1 — No. 2:Is the resistance less than 1
Ω?Go to step 4.Replace the kick-
down switch. to SP(H4SO)-4,
Accelerator
Pedal.>
AT-00594
E
B55
B55 TCM
KICK-DOWN
SWITCH
B129 1 2
B129
11
1
23410 11 12
19
20 21135614 1578916 17 18
22 23 241
2

4AT(H4SO)-91
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
F: CHECK POWER MODE SWITCH
DETECTING CONDITION:
 The LED does not come on when POWER switch is ON.
 The POWER switch circuit is open or shorted.
TROUBLE SYMPTOM:
No power mode occurs.
WIRING DIAGRAM:
 LHD model
AT-01831
SBF-4 SBF-1
No.14
IGNITION
SWITCH
i10
i2
B37 B:
B55
TCM B:B56
R92 C: C:
i11
C2
B9
C11
B23
COMBINATION
METER
E
B55R92B56
1234
56789
10 1112
13 14 15 16 17 18
192021
2223 241234
56789
101112
13
1415 16 17 18
19
202122 23
24
123456
78 9 10 1112
13
14
15 16 17
1819
2021
2223
24
2526
2728
2930
i10B37
1234
578
910112324
121314
156
16 17 1819
20 2122123456
78 910
i11
B16
POWER AND
HOLD SWITCH
BATTERY
E
POWEROFF
3
5
4 POWER
56
i3
B38
12
34
56219
32
B38
1234
5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
25
21
20B98
R2
HOLD
B98
B:
C:
C: B:

4AT(H4SO)-96
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
WIRING DIAGRAM:
 LHD model
AT-00597
BATTERY
SBF-4
COMBINATION
METER IGNITION
SWITCH SBF-1
INHIBITOR SWITCH
E
E
1
3
14
4
5
6
7
10
11
2
3
5
4
1
PRND321
9
8
10
3
11
4
6
53
2
1
8
7
6
5
4
T7
T7B12
B55
B55
B37T3
B12
1234
1234 56
56
12345 7897
78
89
9 10 1112
10 11
10
1112
13
12
1314 15
141516
1617 18
17 18192021
19 20212223 24
22 2324
1 2
i3
B38
TCM
i10
i10
1234
5678
9
10
11
12
No.14
19
2
3
4
5
6
7
ILLUMINATION CONTROL CIRCUIT
3 D N R P
5i2
B37
123456
78 9 10 1112
13
14
15 16 17
1819
2021
2223
24
2526
2728
2930
219
32
1234 5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
25
B38
6