Subaru Legacy 2002 Service Manual page 520

BASIC DIAGNOSTIC PROCEDURE
Engine (Diagnostics)
2. AUTOMATIC TRANSMISSION
S078501E4502
When trouble code about automatic transmission
is shown on display, carry out the following basic
check. After that, carry out the replacement or
repair work.
1) ATF level check <Ref. to AT-9, Automatic Trans-
mission Fluid.>
2) Differential gear oil level check <Ref. to AT-11,
Differential Gear Oil.>
3) ATF leak check <Ref. to AT-9, Automatic Trans-
mission Fluid.>
4) Differential gear oil leak check <Ref. to AT-11,
Differential Gear Oil.>
5) Stall test <Ref. to AT-13, Stall Test.>
6) Line pressure test <Ref. to AT-16, Line Pres-
sure Test.>
7) Transfer clutch pressure test <Ref. to AT-18,
Transfer Clutch Pressure Test.>
8) Time lag test <Ref. to AT-15, Time Lag Test.>
9) Road test <Ref. to AT-12, Road Test.>
10) Shift characteristics <Ref. to AT-18, Transfer
Clutch Pressure Test.>
EN-3