Subaru Legacy 2002 Service Manual page 793

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Engine (Diagnostics)
CC: DTC P1594 — AUTOMATIC TRANSMISSION DIAGNOSIS INPUT SIGNAL
CIRCUIT MALFUNCTION —
¼ DTC DETECTING CONDITION:
¼ Two consecutive driving cycles with fault
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN-45, OPERATION,
Clear Memory Mode.> and Inspection Mode <Ref. to EN-42, OPERATION, Inspection Mode.>.
¼ WIRING DIAGRAM:
No.
1 CHECK DRIVING CONDITION.
1) Start and warm-up the engine until the
radiator fan makes one complete rotation.
2) Drive the vehicle.
S078521G12
Step
Is AT shift control function-
ing properly?
EN-276
Check Yes
Go to step 2.
B2M4719
No
Replace TCM.
<Ref. to AT-49,
Transmission
Control Module
(TCM).>