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AUTOMATIC TRANSMISSION AND DIFFERENTIAL
[M 22B7] 3- 2
Power pattern to normal pattern
The power pattern is shifted to the normal pattern,
depending on car speed . Shifting to the normal pattern
is determined by the throttle position as shown in Figure
below . Time lag in shifting is also determined by car
speed . The maximum time lag is 3 seconds .
7. ENGINE BRAKE CONTROL
Large
'
Power pattern
Throttle
opening
Normal pattern
Small
Low -a-
Vehicle speed
-~ High
133-519
Fig. 65
The TCU controls the shift solenoid corresponding to
the throttle opening is large . With small throttle valve
such input signals as throttle opening, vehicle speed,
opening, the overrunning clutch is engaged by the
shift range, and cruise control signals to automatically
action of shift solenoid 3 .
control the operation of the overrunning clutch and for
2) In range 2, the overrunning clutch is engaged by the
positive application of engine brake .
operation of shift solenoid 3.
1) In range D or 3, the overrunning clutch is kept
3) In range 1, the overrunning clutch is engaged irre-
inoperative by the action of the shuttle shift valve when
spective of the operation of shift solenoid 3.
Brake bond
Brake band
Ovor~unninq
Hi-clutch
(2nd)
Low All raffia broke
(4th)
duteh
Shiftvalve A I I
over-funning
clulch
Shift valve B
reducing valve
%
I
I
(
X
I
11
%
1 I
X
C
4 , 2
X
sequence
I
I
vaM
w'
%
3 range prenure
(Line pressure)
3.2
Accumulator
r inq valve-
~--'
let reducing valve
control valve
U. .
-
.I . . . .
X
1%
Shaak+ shift
valve 5
2 range pressure
(Una Pressure)
Pilot pressure
83-520
Fig. 66
87
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Troubleshooting
