Mitsubishi automatic transmission solenoid valve
Purpose:
The automatic transmission solenoid valve regulates the flow of transmission fluid in the valve body, directing it to various channels depending on the position of the gear selector and other factors.
Device:
A solenoid valve typically consists of the following components:
* Electromagnet: A solenoid that converts electric current into a magnetic field.
* Armature: A metal core that moves in response to a magnetic field.
* Spring: Returns the armature to its original position when there is no electric current.
* Spool: A valve that opens and closes the channels in the valve body when the armature moves.
Working principle:
When electric current is applied to an electromagnet, a magnetic field is created that attracts the armature. The anchor moves the spool, opening or closing the channels in the valve body. This changes the direction of transmission fluid flow, which leads to the activation or disengagement of the corresponding clutches and belts in the automatic transmission.
Types of solenoid valves in Mitsubishi automatic transmissions:
Mitsubishi automatic transmissions use several types of solenoid valves, including:
* Pressure control valve: Regulates the overall pressure in the automatic transmission.
* Shift Valve: Shifts gears depending on the position of the gear selector.
* Torque Converter Lockup Valve: Locks the torque converter for improved efficiency.
* Clutch Control Valve (TCC): Activates the torque converter lockup clutch.
* Pressure Relief Valve: Relieves pressure in the automatic transmission under certain conditions.
Malfunctions:
A faulty solenoid valve can cause the following problems:
* Gear slip
* Shocks when shifting gears
* Inability to change gears
* Low pressure in automatic transmission
Diagnostics and repair:
Diagnosing and repairing a faulty solenoid valve typically involves the following steps:
* Read fault codes using diagnostic scanner
* Checking the resistance of the electromagnet
*Checking transmission fluid pressure
* Replacing a faulty solenoid valve
It is important to use original or high-quality replacements to ensure proper operation and durability of the automatic transmission.