Subaru Legacy 2005 Service Manual page 2342

AUTOMATIC TRANSMISSION
5. Stall Test
A: INSPECTION
NOTE:
The stall test is of extreme importance in diagnos-
ing the condition of automatic transmission and en-
gine. It should be conducted to measure the engine
stall speeds in "R" and "2nd of manual mode".
Purposes of the stall test:
• To check the operation of automatic transmis-
sion clutch.
• To check the operation of torque converter
clutch.
• To check engine performance.
1) Check that the throttle valve opens.
2) Check that the engine oil level is correct.
3) Check that the coolant level is correct.
4) Check that the ATF level is correct.
5) Check that the differential gear oil level is cor-
rect.
6) Raise the ATF temperature by driving a distance
of 5 to 10 km (3 to 6 miles). Otherwise, idle the en-
gine to raise ATF temperature to 70 — 80°C (158
— 176°F) on Subaru Select Monitor. <Ref. to
5AT(diag)-17, READ CURRENT DATA, OPERA-
TION, Subaru Select Monitor.>
7) Place the wheel chocks at the front and rear of
all wheels and apply the parking brake.
8) Move the manual linkage to ensure it operates
properly, and then set to the "2nd on manual
mode".
9) While depressing the brake pedal strongly, de-
press the accelerator pedal gradually.
10) When the engine speed is stabilized, quickly
record that speed and release the accelerator ped-
al.
11) Shift the select lever to "N" range, and cool
down the engine by idling it for more than one
minute.
12) Perform the procedure for "R" range in the
same way as "2nd on manual mode".
Stall Test
NOTE:
• Do not continue the stall test for MORE THAN
FIVE SECONDS at a time (from fully closed throttle
to fully open throttle until stall speed reading). It
makes engine oil and ATF deteriorate and the
clutch and brake to be adversely affected.
• Be sure to cool down the engine for at least one
minute with the select lever set in "P" or "N" range
and with the idle speed lower than 1,200 rpm after
performing stall test.
• If the stall speed is higher than the specified
range, attempt to finish the stall test in as short a
time as possible, in order to prevent the automatic
transmission from sustaining damage.
Stall speed (at sea level):
TURBO MODEL
3,100 — 3,500 rpm
NON-TURBO MODEL
2,400 — 2,800 rpm
AT-01325
5AT-32