Function
Of Each Solenoid
| 1. |
3-way solenoids (S1,S2)
The 3-way solenoids (S1, S2) are installed
on the front valve body. The solenoids turn ON and OFF in response
to signals output from the TCU. According to the ON or OFF status of
S1 or S2, the 1st gear engine brake operates or a gear shift occurs.
As a fail-safe function, if any shift solenoid abnormality occurs,
the TCU will disable the current to the
solenoids. |
| 2. |
Shift control solenoids (SLC1, SLC2, SLC3,
SLB1)
The shift control solenoids (SLC1, SLC2,
SLC3, SLB1) are installed on the front valve body. The solenoids
linearly control hydraulic pressure in response to signals output
from the TCU. Through this, it controls hydraulic pressure to the
clutches (C1, C2, C3) and brake (B1) for smooth shifting. According
to each shift control solenoid, the transaxle shifts from 1st gear
into 6th gear and vice versa. As a fail-safe function, if any shift
control solenoid occurs, the TCU will shut off the current to the
solenoids. |
| 3. |
Line pressure control solenoid
(SLT)
The line pressure control solenoid (SLT) is
installed on the front valve body. In accordance with the value
decided in the TCU based on throttle opening signals and engine
torque, line hydraulic pressure is controlled by linearly changing
the comparable throttle pressure. Through this, The TCU controls
hydraulic pressure to the clutch and brakes for smooth shifting. As
a fail-safe function, if any abnormality occurs in the line pressure
control solenoid (SLT), then the TCU will shut off the current to
the line pressure control solenoid. (The line pressure is maximized,
If the line pressure control solenoid current is shut off when any
abnormality of the SLT other than valve stuck
occurs.) |
| 4. |
Lock-up control solenoid (SLU)
The lock-up control solenoid (SLU) is
installed on the front valve body. It linearly controls lock-up
clutch hydraulic pressure based on engine rpm, throttle opening
degree signals, input speed sensor (NIN) signals, and output speed
sensor (SP) signals. This results in control of lock-up. As a
fail-safe function, if any abnormality occurs in the lock-up control
solenoid (SLU), then the TCU will shut off the current to the
solenoid. |
Specification
Of Each Solenoid
3-way
Solenoid (S1,S2)
Shift
Control Solenoid
