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
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Description
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AAS mode
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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.
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Low ATF temperature mode
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When the ATF temperature is low, the TCM inhibits 5GR.
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High ATF temperature mode
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When the ATF temperature is high, the TCM shifts the TCC point to low vehicle speed side.
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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
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• 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
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• 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
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• AAS mode is forcibly cancelled under the following conditions:
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― The vehicle speed in the cruise control system is reset.
― The selector lever is shifted to M range while driving in D range.