AUTOMATIC TRANSMISSION [SJ6A-EL]
05–13–33
05–13
MANUAL MODE SHIFT CONTROL OPERATION [SJ6A-EL]
EHU051318901108
Manual Mode Shift
• When the selector lever is shifted over from the D to M range position, the M range switch in the selector lever
component turns on, sending a manual mode command signal to the TCM which activates the manual mode
shift control.
• When in manual mode and the selector lever is operated in the back (+) direction, the up switch in the selector
lever component is turned on and an up-shift command signal is input to the TCM.
— The TCM, triggered by the up-shift command signal, carries out shifting by outputting an operation signal to
the shift control solenoid.
• Conversely, when the selector lever is operated in the forward (–) direction, the down switch in the selector lever
component turns on, and a down-shift command signal is input to the TCM.
— The TCM, triggered by the down-shift command signal, carries out shifting by outputting an operation signal
to the shift control solenoid if the vehicle speed is less than the set speed and the gear position is 2GR or
above.
• The up/down operation of the steering shift switch is the same as the manual operation of the selector lever.
• The TCM utilizes a specialized M range automatic shift diagram. Due to this, restriction of manual shift demand
and automatic control of downshifting is carried out, reducing load on the AT, preventing engine over-rev and
ensuring drive stability.
Condition Shift control Note
1GR→2GR up-shift command,
at low speed
• To reduce load on the AT, upshifting is
inhibited until vehicle reaches speed possible
for upshifting
—
2GR→3GR up-shift command,
at low speed
3GR→4GR up-shift command,
at low speed
4GR→5GR up-shift command,
at low speed
5GR→6GR up-shift command,
at low speed
5GR→6GR up-shift command,
low ECT
• To rapid engine warming-up, upshifting to
6GR is inhibited
6GR→5GR down-shift
command, above set speed
• To prevent engine over-rev, downshifting is
inhibited until vehicle reaches speed possible
for downshifting
• Gear position indicator light flash to
alert driver
5GR→4GR down-shift
command, above set speed
4GR→3GR down-shift
command, above set speed
3GR→2GR down-shift
command, above set speed
2GR→1GR down-shift
command, above set speed
In 6GR deceleration, speed
goes below coast-down set
speed (deceleration down-
shift)
• To assure drive stability, automatically
downshifts from 6GR to 5GR
—
In 5GR deceleration, speed
goes below coast-down set
speed (deceleration down-
shift)
• To assure drive stability, automatically
downshifts from 5GR to 4GR
In 4GR deceleration, speed
goes below coast-down set
speed (deceleration down-
shift)
• To assure drive stability, automatically
downshifts from 4GR to 3GR
In 3GR deceleration, speed
goes below coast-down set
speed (deceleration down-
shift)
• To assure drive stability, automatically
downshifts from 3GR to 2GR
In 2GR deceleration, speed
goes below coast-down set
speed (deceleration down-
shift)
• To assure drive stability, automatically
downshifts from 2GR to 1GR
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