Toyota
Nissan Versa
 Sedan Service Manual
Transmission & driveline » Transaxle & transmission (TM) » A/T control system
A/T control system : system description

SYSTEM DESCRIPTION

  • The A/T senses vehicle operating conditions through various sensors or signals. It always controls the optimum shift position and reduces shifting and lock-up shocks.
  • Receives input signals transmitted from various switches and sensors.
  • Determines required line pressure, shifting point, lock-up operation, etc.
  • Transmits required output signals to the respective solenoids.

INPUT/OUTPUT SIGNAL CHART

Sensor (or signal)

TCM function

Actuator

Engine speed signal Engine torque signal Accelerator pedal position signal Closed throttle position signal Stop lamp switch signal Transmission range switch O/D switch signal A/T fluid temperature sensor Input speed sensor Output speed sensor Vehicle speed signal Line pressure control (TM) Shift change control (TM) Shift pattern control (TM) Lock-up control (TM) Fail-safe control (TM) Self-diagnosis (TM) CONSULT communication line (TM) CAN communication line (TM) Line pressure solenoid valve Torque converter clutch solenoid valve Low clutch solenoid valve 2-4 brake solenoid valve High clutch/low & reverse brake solenoid valve Select switch ON-OFF solenoid valve Shift position indicator O/D OFF indicator lamp

INPUT/OUTPUT SIGNAL OF TCM

INPUT/OUTPUT SIGNAL OF TCM

*: If these input and output signals are different, the TCM triggers the fail-safe function.

    More about «A/T control system»:

    A/T control system : system description

    A/T control system : fail-safe

    A/T control system : protection control

    Nissan Versa Sedan Service Manual / Transmission & driveline / Transaxle & transmission (TM) / A/T control system / A/T control system : system description

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