Control Items
CONTROL ITEMS DESCRIPTION CHART
| Control items | Description of control | ||
|---|---|---|---|
| Transmission hydraulic control | Shifting control | Shift pattern selection | Upshift points and downshift points are set for each range and shift pattern selected by switch operation, according to throttle position and vehicle speed. < Ref. to section, TRANSMISSION CONTROL MODULE (TCM) . > |
| Control of linear solenoid for each shift clutch | The linear solenoid for each shift clutch is directly controlled in accordance with the target gear speed. Supported by the learning control and real time feedback functions, control values are corrected any time when necessary to improve shift quality and eliminate errors due to aging. | ||
| Engine braking control | In manual mode, the low coast brake ON-OFF solenoid is controlled to make engine braking available in 1st and 2nd speeds. | ||
| Lockup control | Base lockup control | Lockup engagement and disengagement points are set for each range and shift pattern selected by switch operation, according to throttle position and vehicle speed, and the lockup solenoid is controlled in accordance with these points to engage or disengage the lockup clutch inside the torque converter. | |
| Smooth control | When the lockup clutch is engaged, the pressure is gradually changed to ensure a smooth engagement. | ||
| Line pressure control | Ordinary control | Line pressure is properly regulated according to information such as the electronic control throttle position, engine torque value, engine speed, vehicle speed, and range position. | |
| Control during engine braking | Line pressure is regulated in accordance with the vehicle speed while engine braking is used. | ||
| Line pressure control in during shifting | Line pressure is regulated to the necessary value during gear shifting. | ||
| Line pressure control when ATF temperature is low | Hydraulic pressure is controlled to a higher value than normal when the ATF temperature is low. | ||
| AWD center differential control | Ordinary transfer control | Multi-plate clutch (LSD) pressure is regulated according to the torque input to the transfer and the driving condition. | |
| Start control | LSD pressure is regulated according to the torque input to the transfer. Compared to normal control, the control pressure is raised to prevent slip. | ||
| Turning control | When the front and rear wheel speed ratio is less than the set value for a vehicle speed, the LSD pressure is decreased. | ||
| Slip control | When a front or rear wheel starts slipping, the LSD pressure is increased. | ||
| Control while ABS/vehicle dynamics control (VDC) in operation | When ABS/vechicle dynamics control (VDC) operation signal is received, the LSD pressure is adjusted to the set level. | ||
| Base brake control | When the brake switch is ON and throttle valve is fully closed, the LSD pressure is lowered. | ||