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SOLENOID VALVE [ET6A-EL (US)]

SOLENOID VALVE [ET6A-EL (US)]

SM2780923


id0517n13637x5



Purpose/Function

• The solenoid valve implements shift point control, shift hydraulic pressure control, and TCC control by adjusting the pressure in each circuit based on the control signal from the TCM.
• The part name of each solenoid valve and function are as follows.

Part name

Function

Pressure control solenoid
• Adjusts the pressure control solenoid pressure to control line pressure.
Shift solenoid No.1
• Adjusts the hydraulic pressure in the low clutch circuit.
Shift solenoid No.2
• Adjusts the hydraulic pressure in the 2-6 brake circuit.
Shift solenoid No.3
• Adjusts the hydraulic pressure in the R-3-5 brake circuit.
Shift solenoid No.4
• Adjusts the hydraulic pressure in the high clutch circuit and the low and reverse brake circuit.
Torque converter clutch (TCC) control solenoid
• Adjusts the hydraulic pressure in the lock-up control circuit.
On/off solenoid
• Performs switching of the shift valve in the control valve body.



Construction

• Each type of solenoid valve is as follows.

Item

Type

Pressure control solenoid
Normal open-type linear solenoid
Shift solenoid No.1
Normal closed-type linear solenoid
Shift solenoid No.2
Normal closed-type linear solenoid
Shift solenoid No.3
Normal open-type linear solenoid
Shift solenoid No.4
Normal open-type linear solenoid
TCC control solenoid
Normal closed-type linear solenoid
On/off solenoid
Normal open-type on/off solenoid
• Each solenoid valve is installed to the solenoid control valve body.

am3zzn00007648



Operation

• Each solenoid valve operates as follows.

Item

Operation

Pressure control solenoid
• Adjusts the pressure control solenoid pressure by increasing/decreasing the energization current to the pressure control solenoid according to the signal from the TCM.
Shift solenoid No.1
• Adjusts the low clutch pressure by increasing/decreasing the energization current to shift solenoid No.1 according to the signal from the TCM.
Shift solenoid No.2
• Adjusts the 2-6 brake pressure by increasing/decreasing the energization current to shift solenoid No.2 according to the signal from the TCM.
Shift solenoid No.3
• Adjusts the R-3-5 brake pressure by increasing/decreasing the energization current to shift solenoid No.3 according to the signal from the TCM.
Shift solenoid No.4
• Adjusts the high clutch pressure and the low and reverse brake pressure by increasing/decreasing the energization current to shift solenoid No.4 according to the signal from the TCM.
TCC control solenoid
• Adjusts the TCC control clutch pressure by increasing/decreasing the energization current to the TCC control solenoid according to the signal from the TCM.
ON/OFF solenoid
Non-energization (OFF)
• When the on/off solenoid is off, the supply port in the solenoid opens. As a result, hydraulic pressure is supplied to operate the shift valve.
Energized (ON)
• When the on/off solenoid is on, the drain port in the solenoid opens. As a result, hydraulic pressure which operates the shift valve is drained.