Line pressure control : system diagram
Line pressure control : system description
This line pressure solenoid controls the pressure regulator valve as the signal pressure and adjusts the pressure of the operating oil discharged from the oil pump to the line pressure most appropriate to the driving state.
Normal Control
Each clutch is adjusted to the necessary pressure to match the engine drive force.
Back-up Control (Engine Brake)
When the select operation is performed during driving and the A/T is shifted down, the line pressure is set according to the vehicle speed.
During Shift Change
The necessary and adequate line pressure for shift change is set.
For this reason, line pressure pattern setting corresponds to engine torque and gearshift selection. Also, line pressure characteristic corresponds to engine speed, during engine brake operation.
At Low Fluid Temperature
When the A/T fluid temperature drops below the prescribed temperature, in order to speed up the action of each friction element, the line pressure is set higher than the normal line pressure characteristic.
A/T control system : system diagram ...
Shift change control : system diagram Shift change control : system description The clutch is controlled with the optimum timing and oil pressure by the engine speed, engine torque infor ...
Automatic speed control device (ASCD)
Automatic speed control device (ascd) : system diagram
NOTE:
Transmission range switch and TCM is also for A/T models.
Automatic speed control device (ascd) : system description
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Brake pedal ...
P0983 Shift solenoid D
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0983
Shift Solenoid D Control Circuit
High
The following diagnosis conditions
are met, and the current
monitor reading of the TCM line
pressure solenoid val ...