Purpose
The expansion valve atomizes liquid refrigerant to facilitate cooling of the evaporator.
Function
The expansion valve reduces the pressure of liquid refrigerant rapidly to facilitate vaporization of the atomized refrigerant at the evaporator, and adjusts the refrigerant amount sent into the evaporator.
Construction
The expansion valve consists of the following parts:
Diaphragm
Temperature sensor
Shaft
Expansion valve body
Ball valve
Spring

Operation
Adjustment of the refrigerant amount supplied to the evaporator is performed by the ball valve opening angle in the expansion valve.
The opening angle adjustment is performed according to the balance of the following forces:

Refrigerant pressure (Pd) in diaphragm
Refrigerant gas pressure (PI) of evaporator under diaphragm
Spring force (Fs) pushing up ball valve
If the refrigerant gas temperature from the evaporator increases, the expansion valve increases the amount of refrigerant according to the following operations:

The temperature of the temperature sensor tightly sealed against the diaphragm increases.
The refrigerant in the diaphragm warms and the Pd increases.
If this Pd increases more than PI + Fs, the diaphragm is pressed down.
The shaft installed to the temperature sensor end presses down the ball valve.
The amount of refrigerant is increased.
If the refrigerant gas temperature from the evaporator decreases, the expansion valve decreases the amount of refrigerant flow according to the following operation:

The temperature of the temperature sensor tightly sealed against the diaphragm decreases.
The refrigerant temperature in the diaphragm decreases and the Pd decreases.
The Pd decreases less than PI + Fs.
The ball valve installed to the temperature sensor end is pressed up.
The amount of refrigerant is decreased.
Fail-safe
Function not equipped.
Evaporator Inspection
Expansion Valve Removal/InstallationShroud Upper Reinforcement Removal [Panel Replacement]
Symbol Mark
Removal Procedure
1. Drill the 4 locations shown in the figure.
NOTE:
When drilling the 4 locations shown in the figure, do not drill a hole all
the way through or there could be a problem when installing the new part.
2. Remove the shroud upper reinforcement ...
Rear Seat Back Trim Removal/Installation
6:4 Split Type
1. Remove the trunk board..
2. Remove the rear seat back..
3. Remove the headrest.
4. Remove the rear seat back frame..
5. Remove the C rings in the order of (1), (2), (3), and (4) shown in the figure,
and remove the rear seat back trim from the rear seat back pad.
CA ...
Parking in an Emergency
Parking in an Emergency
The hazard warning lights should always be used when you stop on or near a roadway
in an emergency.
The hazard warning lights warn other drivers that your vehicle is a traffic hazard
and that they must take extreme caution when near it.
Depress the hazard warning fla ...