Subaru Legacy 2002 Service Manual page 1847

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Automatic Transmission (Diagnostics)
K: DTC 74 2-4 BRAKE TIMING SOLENOID
DIAGNOSIS:
Output signal circuit of 2-4 brake timing solenoid is open or shorted.
TROUBLE SYMPTOM:
Excessive shift shock.
WIRING DIAGRAM:
No.
1 CHECK HARNESS CONNECTOR
BETWEEN TCM AND TRANSMISSION.
1) Turn ignition switch to OFF.
2) Disconnect connector from TCM and trans-
mission.
3) Measure resistance of harness between
TCM and transmission connector.
Connector & terminal
(B54) No. 16 — (B11) No. 4:
Step
Is the resistance less than
1 Ω?
AT-78
S004521I20
Check Yes
Go to step 2.
TR0413
No
Repair open cir-
cuit in harness
between TCM and
transmission con-
nector.