Road Test - Subaru Legacy 2002 Service Manual

Automatic Transmission

4. Road Test

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A: INSPECTION
1. GENERAL PRECAUTION
Road tests should be conducted to properly diag-
nose the condition of the automatic transmission.
NOTE:
When performing test, do not exceed posted
speed limit.
2. D RANGE SHIFT FUNCTION
Check shifting between 1st ⇔ 2nd ⇔ 3rd ⇔ 4th
while driving on normal city streets.
3. D RANGE SHIFT SHOCK
Check the shock level when shifting up during nor-
mal driving.
4. KICK-DOWN FUNCTION
Check kick-down for each gear. Also check the
kick-down shock level.
5. ENGINE BRAKE OPERATION
¼ Check the 3rd gear engine brake when shifting
between D ⇔ 3rd range while driving in 4th gear
of D range [50 to 60 km/h (31 to 37 MPH)].
¼ Check the 2nd gear engine brake when shifting
between 3 ⇔ 2 range while driving in the 3 range
3rd gear [40 to 50 km/h (25 to 31 MPH)].
¼ Check the 1st gear engine brake when shifting
between 2 ⇔1 range while driving in the 2 range
2nd gear [20 to 30 km/h (12 to 19 MPH)].
6. LOCK-UP FUNCTION
Check that rpm does not change sharply when the
axle pedal is lightly depressed when driving on flat
roads at normal speed in the lock-up range.
7. P RANGE OPERATION
Stop the vehicle on an uphill grade of 5% or more
and shift to P range. Check that the vehicle does
not move when the parking brake is released.
8. UNUSUAL SOUNDS AND VIBRATION
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Check for unusual sounds and vibration while driv-
ing and during shifting.
9. CLIMBING CONTROL FUNCTION
¼ Check that gear remains in 3rd when going up
a grade.
¼ Check that gear remains in 3rd when applying
the brakes while going down a grade.
ROAD TEST
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10. OIL LEAKS
After the driving test, inspect for oil leaks.
AT-12
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