Variable Intake manifold Solenoid (VIS) valves are installed
on the intake manifold (VIS Valve 1) and the surge tank (VIS Valve 2).
These VIS valve 1 and 2 control vacuum modulators which activate valves
in the intake manifold and the surge tank. These valves opens or closes
by ECM according to engine condition (Refer to the table below).

Other information:
Description
The valve body is essential to automatic transmission control
and consists of various valves used to control the oil feed from the
oil pump. Specifically, these valves consist of pressure regulator
valves, oil redirection valves, shift valves, and manual valves. The
valve body ...
Inspection
1.
Check the resistance of the ambient temperature sensor
between terminals 1 and 2 whether it changes by changing the ambient
temperature.
1. Ambient Sensor (+)2. Sensor ground
Specification
Ambient temperature [°C(°F)] Resistance between terminal 1 and 2 (k?)-30 (-22)54 ...