ELECTRONIC CONTROL SYSTEM OUTLINE


id051300700700


Outline

•   In the electronic control system, the TCM calculates the control content based on signals from each type of sensor and switch to operate output parts such as each solenoid. In consideration of suppressed shift shock, smooth driving, and improved fuel economy, the TCM performs controls so as to maintain the optimum driving performance in response to the vehicles driving scenario.

Construction

Item

Function

Input
VSS
•  Detects rotation speed of parking gear (output shaft)
Turbine sensor
•  Detects rotation speed of direct and reverse disc clutch case (input shaft)
TR switch
•  Detects select lever position
TFT sensor
•  Detects ATF temperature
CAN
M position switch
•  Detects that selector lever is in M position
Up switch
•  Detects shift up operation of the selector lever
Down switch
•  Detects shift down operation of the selector lever
Steering shift switch
•  Detects the shift up and shift down operations of the steering shift
Brake switch
•  Receives brake pedal operation from PCM
Accelerator pedal position signal (accelerator pedal position (APP) sensor)
•  Receives accelerator pedal position signal from PCM
Engine speed signal (crankshaft position (CKP) sensor)
•  Receives engine speed signal from PCM
Engine torque signal (mass air flow (MAF) sensor)
•  Receives engine torque signal from PCM
Engine coolant temperature signal (engine coolant temperature (ECT) sensor)
•  Receives engine coolant temperature signal from PCM
i-stop-related information
•  Receives i-stop-related information signal from PCM
Drive selection signal
•  Receives drive selection-related information signal from PCM
Wheel speed signal (ABS wheel-speed sensor)
•  Receives wheel speed signal from DSC HU/CM
Output
Solenoid (ON/OFF type)
Shift solenoid A
•  Adjusts hydraulic pressure based on the current demand from the TCM according to the vehicle conditions.
Shift solenoid B
•  Adjusts hydraulic pressure based on the current demand from the TCM according to the vehicle conditions.
Shift solenoid C
•  Adjusts hydraulic pressure based on the current demand from the TCM according to the vehicle conditions.
Shift solenoid D
•  Adjusts hydraulic pressure based on the current demand from the TCM according to the vehicle conditions.
Shift solenoid E
•  Adjusts hydraulic pressure based on the current demand from the TCM according to the vehicle conditions.
Solenoid (Linear type)
Line pressure control solenoid
•  Adjusts line pressure based on the current demand from the TCM according to the vehicle conditions.
Torque converter clutch (TCC) control solenoid
•  Adjusts hydraulic pressure in the TCC control circuit based on the current demand from the TCM according to the vehicle conditions
Shift solenoid F
•  Adjusts hydraulic pressure based on the current demand from the TCM according to the vehicle conditions.
Shift solenoid G
•  Adjusts hydraulic pressure based on the current demand from the TCM according to the vehicle conditions.
CAN
AT warning light
•  illuminates when the transmission has malfunction.
Speedometer signal
•  Outputs vehicle speed signal to the speedometer
Torque reduction request signal
•  During shifting, outputs torque reduction request signal to PCM