Subaru Legacy 2002 Service Manual page 1831

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Automatic Transmission (Diagnostics)
F: DTC 38 TORQUE CONTROL SIGNAL
DIAGNOSIS:
¼ The signal circuit is open or shorted.
TROUBLE SYMPTOM:
Excessive shift shock.
WIRING DIAGRAM:
No.
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
Except 3.0 L model:
(B56) No. 14 — (B135) No. 17:
(B56) No. 5 — (B135) No. 16:
3.0 L model:
(B56) No. 14 — (B134) No. 18:
(B56) No. 5 — (B134) No. 19:
2 CHECK HARNESS CONNECTOR
BETWEEN TCM AND ECM.
Measure resistance of harness between TCM
connector and chassis ground.
Connector & terminal
(B56) No. 14 — Chassis ground:
(B56) No. 5 — Chassis ground:
Step
Is the resistance less than
1 Ω?
Is the resistance more than
1 MΩ?
AT-62
S004521G66
Check
Go to step 2.
Go to step 3.
B3M2254
Yes No
Repair open cir-
cuit in harness
between TCM and
ECM connector.
Repair short cir-
cuit in harness
between TCM and
ECM connector.