Page text (OCR transcript)
AT2–38
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING
D Position
P
R
N
D
2
L
2
Full Opening
3
O/D
AT3070
000497
(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 2 → 1, 3 → 2 and O/D → 3 kick–downs conform to those
indicated on the automatic shift schedule.
(See page AT2–116)
(e) Check for abnormal shock and slip at kick–down.
OK
O/D
OVERDRIVE
NG
T20035
(f) Check the lock–up mechanism.
(1) Drive in D position, O/D gear, at a steady speed (lock–up
ON) of about 59 km/h (37 mph).
(2) Lightly depress the accelerator pedal and check that the
RPM does not change abruptly.
If there is a big jump in RPM, there is no lock–up.
D Position
Full Open
P
R
N
D
2
L
AT2818
000494
2. D POSITION TEST (MANU PATTERN)
Shift into the D position and hold the accelerator pedal
constant at the full throttle valve opening position, and check
the following points:
(a) Check up–shift operation.
2–3 and 3–O/D up shifts should take place, and shift points
should conform to those shown in the automatic shift sched-
ule.
(See page AT2–116)
HINT:
• O/D up–shift or lock–up will not occur when the engine
coolant temp. is below 60°C (140°F) and speed is under
60 km/h (37 mph), or if there is a 10 km/h (6 mph)
difference between the set cruise control speed.
• 3rd up–shift or lock–up will not occur when engine
coolant temp. is 35°C (95°F) and speed is under 40 km/h
(25 mph).
D Position
P
R
N
D
2
L
2 → 3
3 → O/D
Slip page ?
Shock ?
004117
(b) Check for shift shock and slip.
In the same manner, check the shock slip at the 2 → 3 and
3 → O/D up–shifts.
