
AT1–39
AT340E (2JZ–GE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING
D Position
Abnormal Noise?
Vibration?
O/D
LOCK-UP
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(c) Check for abnormal noise and vibration.
Run at the D position lock–up or O/D gear and check for ab-
normal noise and vibration.
HINT: The check for the cause of abnormal noise and vibra-
tion must be made with extreme care as it could also be due
to loss of balance in the propeller shaft, differential, torque
converter clutch, etc.
D Position
2
Full Opening
3
O/D
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(d) Check kick–down operation.
While running in the D position, 2nd, 3rd and O/D gears,
check to see that the possible kick–down vehicle speed limits
for 3 → 2 and O/D → 3 kick–downs conform to those indi-
cated on the automatic shift schedule.
(See page AT1–96)
(e) Check for abnormal shock slip at kick–down.
OK
O/D
NG
TE0035
(f) Check the lock–up mechanism.
(1) Drive in D position, O/D gear, at a steady speed (lock–up
ON) of about 172 km/h (107 mph).
(2) Lightly depress the accelerator pedal and check that the
engine RPM does not change abruptly.
If there is big jump in the engine RPM there is no lock –up.
3. 2 POSITION TEST (NORM PATTERN)
Shift into the 2 position and, while driving with the accelerator
pedal held constantly at the full throttle valve opening posi-
tion, check on the following points:
2 Position
Full Open
1
2
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(a) Check up–shift operation.
Check to see that the 1 → 2 up–shift takes place and that the
shift point conforms to the automatic shift schedule.
(See page AT1–96)
HINT: There is no O/D up–shift and lock–up in the 2 position.
2 Position
2
Engine Braking?
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002500
(b) Check engine braking.
While running in the 2 position and 2nd gear, release the ac-
celerator pedal and check the engine braking effect.