Subaru 2003 LEGACY Service Manual page 70
Transmission section
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- Service manual (4441 pages) ,
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DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
G: DTC 38 TORQUE CONTROL SIGNAL
DIAGNOSIS:
• The signal circuit is open or shorted.
TROUBLE SYMPTOM:
Excessive shift shock.
WIRING DIAGRAM:
OO : NON-TURBO MODEL WITOUT OBD
WO
: NON-TURBO MODEL WITH OBD
H6T
: 3.0L MODEL AND TURBO MODEL
B56
1 2 3 4
5 6
7
8
10 11 12
13
14 15
16 17 18
19 20 21
22 23 24
1
CHECK HARNESS CONNECTOR BETWEEN
TCM AND ECM.
1) Turn ignition switch to OFF.
2) Disconnect connectors from TCM and
ECM.
3) Measure resistance of harness between
TCM and ECM connector.
Connector & terminal
Non-TURBO without OBD model:
(B56) No. 14 — (B135) No. 17:
(B56) No. 5 — (B135) No. 16:
Non-TURBO with OBD model:
(B56) No. 14 — (B136) No. 18:
(B56) No. 15 — (B136) No. 1:
3.0 L model and TURBO model:
(B56) No. 14 — (B134) No. 18:
(B56) No. 5 — (B134) No. 19:
Is the measured value less than the speci-
fied value?
B135
1
2
3
9
8
9
10
11 12 13 14 15
20 21
22 23
Step
B56
TCM
OO
B135
:
B136
:
WO
B134 :
H6T
:
OO
4
5 6 7
1 2 3 4
16 17 18 19
8 9
24
25
26
27 28
16 17
Value
1 Ω
AT-68
B134
:
H6T
1
2
3
5
6
7
7
8
9
10 11 12
13
14 15
18 19
20
18
19 20 21
22
Yes
Go to step 2.
B136
:
WO
4
5 6
10 11 12 13 14
15 16 17
21
22
23
24
25 26
AT-00781
No
Repair open circuit
in harness
between TCM and
ECM connector.
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