Initial Inspection and Diagnostic Overview

Road Test

INSPECTION
GENERAL PRECAUTION
Road tests should be conducted to properly diagnose the condition of the automatic transmission.

NOTE: When performing the test, do not exceed posted speed limit.

D RANGE SHIFT FUNCTION
Check shifting between 1st <=> 2nd <=> 3rd <=> 4th while driving on normal city streets.

D RANGE SHIFT SHOCK
Check the shock level when shifting up during normal driving.

KICK-DOWN FUNCTION
Check kick-down for each gear. Also check the kick-down shock level.

ENGINE BRAKE OPERATION
^ 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)].
^ 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)].
^ 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)].

LOCK-UP FUNCTION
Check that rpm does not change sharply when the accelerator pedal is lightly depressed when driving on flat roads at normal speed in the lock-up range.

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.

UNUSUAL SOUNDS AND VIBRATION
Check for unusual sounds and vibration while driving and during shifting.

CLIMBING CONTROL FUNCTION
^ Check that the gear remains in 3rd when going up a grade.
^ Check that the gear remains in 3rd when applying the brakes while going down a grade.

TRANSFER CLUTCH
Check if the tight corner braking occurs when the vehicle is started with steering wheel held at fully turned position.

OIL LEAKS
After the driving test, inspect for oil leaks.