Toyota ZZT230 series, Repair Manual

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Dl-162
AUTOMATIC TRANSAXLE (b)
M position test
Shift
to
the M position, depress the accelerator pedal and check the following points.
Shift operations.
Pressing the transmission shift switch to
�upft
or
ft
Down" makes the transmission up-shifted or down­
shifted respectively.
Without pressing the switch, it is not automatically shifted to neither up or down.
When a vehicle is stopped, it is automatically down-shifted to
i
st gear.
HINT:
Manual shift prohibition
control
(1.
When the
ATF
temperature is low. 2. When down-shifting causes engine
overrun.
3.
When down-shifting is required continuously, down-shifting to 1st gear may not be performed.
4.
W
he
n
the ATF
temp. is high, up-shifting to OlD is not performed.
(c) 2 position test
Shift
into
the 2 pos1lion and fully depress the accelerator pedal and check the following points.
(1) Check up-<�hlft operation.
HINT:
Check to
see
that the
1
�
2 up-shift takes place and that the shift point conforms to the automatic
shift schedule (See page Ss-41 ).
There is no
0/0
up-shift and lock-up
in
t
h
e 2 position.
(2) Check engine braking.
While running in the 2 position and 2nd gear, release the accelerator pedal and check the engine
braking effect.
(3)
Check for abnormal noises during acceleration and deceleration, and for shock at up-shift and
down-shift.
(d)
L
position test
Shift into the
L
position and fully depress the accelerator pedal and check the following points.
(1)
Check no up-<�hift.
While running In the
L
position, check that there is no up-shift to 2nd gear.
(2) Check engine braking.
While running in the
L
position, release the accelerator pedal and check the engine braking ef­
fect.
(3)
Check for abnormal noises during acceleration and deceleration.
(e)
R
position test
Shift into the
R
position and fully depress the accelerator pedal and check for slipping.
CAUTION:
Before
conducting this test ensure that the test area Is free from people and obstruction.
(f)
P
position test
Stop t
he vehicle on a grade {more than
5°)
and after shifting into the
P
position, release the parking
brake. Then, check to see that the parking lock pawl holds the vehicle in place.