AUTOMATIC SHIFT CONTROL OPERATION [FS5A-EL]

id051721286600

Driving Range Judgement

• The TCM performs the automatic shift control while the D range switch on and the M range switch off.

Driving Mode Judgement

• In the automatic shift mode, the vehicle is ordinarily in NORMAL mode. However, when specific conditions are met, the TCM selects a shifting pattern appropriate to driving conditions and switches automatically.

Driving Mode

Description

AAS mode

When above a certain vehicle speed and the accelerator pedal depressing speed is above the preset value, the TCM shifts the shift point to high vehicle speed side.

Low ATF temperature mode

When the ATF temperature is low, the TCM inhibits 5GR.

High ATF temperature mode

When the ATF temperature is high, the TCM shifts the TCC point to low vehicle speed side.

Driving Mode	Description
AAS mode	When above a certain vehicle speed and the accelerator pedal depressing speed is above the preset value, the TCM shifts the shift point to high vehicle speed side.
Low ATF temperature mode	When the ATF temperature is low, the TCM inhibits 5GR.
High ATF temperature mode	When the ATF temperature is high, the TCM shifts the TCC point to low vehicle speed side.

Active Adaptive Shift (AAS) Mode

• When certain conditions are met, AAS mode is automatically selected from normal mode. In AAS mode, the shift point is set higher than the normal shift point so that high-engine speed, high-output conditions are available.

• AAS mode is canceled when the vehicle speed remains constant (stable vehicle behavior).

Conditions for switching to active adaptive shift (AAS) mode

• The accelerator pedal is depressed fully to accelerate rapidly while driving in D range.

• Rapid acceleration or deceleration continues for a certain period of time while driving in D range.

Shift control in active adaptive shift (AAS) mode

• Shift control is performed according to the shift pattern in AAS mode.

• When the driver releases the accelerator pedal fully and rapidly, the gear position is maintained at the position before accelerator pedal was released. Due to this, re-acceleration and vehicle control performance have been improved. If the accelerator pedal is released slowly, the gears shift up according to the shift pattern.

• While cornering the vehicle, the gear position is maintained at the position before the vehicle was cornered to facilitate re-acceleration after the corner. The gears do not shift up if the accelerator pedal is depressed fully while cornering the vehicle.

Forced cancellation of active adaptive shift (AAS) mode

• AAS mode is forcibly cancelled under the following conditions:

― The vehicle speed in the cruise control system is reset.

― The selector lever is shifted to M range while driving in D range.