Subaru Legacy 2002 Service Manual page 1497

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Engine (DIAGNOSTICS)
BU: DTC P0864 — 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(H6)-49,
OPERATION, Clear Memory Mode.> and INSPECTION MODE <Ref. to EN(H6)-46, 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.
S048521K10
Step
Is AT shift control function-
ing properly?
EN(H6)-290
Check Yes
Go to step 2.
B2M4371
No
Replace TCM.
<Ref. to AT-49,
Transmission
Control Module
(TCM).>