Subaru Legacy 2003 Service Manual page 2279

AUTOMATIC TRANSMISSION (DIAGNOSTICS)
6 PERFORM THE DIAGNOSIS.
1) Inspect using "Diagnostics Chart with Diag-
nostic Trouble Code". <Ref. to AT-42, Diag-
nostic Procedure with Diagnostic Trouble
Code (DTC).>
NOTE:
For trouble code table, refer to "List of Diagnos-
tic Trouble Code (DTC)". <Ref. to AT-29, List of
Diagnostic Trouble Code (DTC).>
2) Repair trouble cause.
3) Perform the clear memory mode.
With Subaru Select Monitor
<Ref. to AT-27, WITH SUBARU SELECT
MONITOR, OPERATION, Clear Memory
Mode.>
Without Subaru Select Monitor
<Ref. to AT-27, WITHOUT SUBARU
SELECT MONITOR, OPERATION, Clear
Memory Mode.>
4) Perform the inspection mode. <Ref. to AT-
26, Inspection Mode.>
5) Calling up the diagnostic trouble code
(DTC).
Without Subaru Select Monitor
<Ref. to AT-24, WITHOUT SUBARU
SELECT MONITOR, OPERATION, Read
Diagnostic Trouble Code (DTC).>
With Subaru Select Monitor
<Ref. to AT-25, WITH SUBARU SELECT
MONITOR, OPERATION, Read Diagnos-
tic Trouble Code (DTC).>
Is the DTC displayed?
BASIC DIAGNOSTIC PROCEDURE
Step Value
DTC is displayed
AT-4
Yes
Inspect using Complete the
"Diagnostics Chart diagnosis.
with Diagnostic
Connector". <Ref.
to AT-42, Diagnos-
tic Procedure with
Diagnostic Trou-
ble Code (DTC).>
No