OVERALL SYSTEM
AT-177
[RE4R01A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
Control System
ECS007LK
OUTLINE
The automatic transmission senses vehicle operating conditions through various sensors. It always controls
the optimum shift position and reduces shifting and lock-up shocks.
CONTROL SYSTEM
SENSORS
TCM
ACTUATORS
PNP switch
Throttle position sensor
Closed throttle position switch
Wide open throttle position switch
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed sensor
Overdrive control switch
ASCD control unit
Stop lamp switch (VG33ER only)
Turbine revolution sensor
(VG33ER only)
Shift control
Line pressure control
Lock-up control
Overrun clutch control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
Duet-EA control
Shift solenoid valve A
Shift solenoid valve B
Overrun clutch solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
O/D OFF indicator lamp
WAT495