Check Refrigerant Gas Pressure

WARNING: This page is about a different variant/trim than selected.

Prepare the vehicle.
NOTE: Check that the ambient temperature is 25 - 40°C (77 - 104°F) and that the humidity is 30 - 80 %.
- Place the vehicle in the shade and windless condition, and open the front hood.
- Open the front windows and close all doors.
Attach the manifold gauge set.
CAUTION:
- During operation, be sure to wear protective goggles and protective gloves.
- Follow the detailed operation procedure described in the attached operation manual.
Preparation tool:

Manifold gauge set
1. Check that all valves are fully closed.
2. Install the low/high pressure hoses to the service ports on the low/high pressure sides of the vehicle respectively.

Check the refrigerant pressure .

Start the engine.

Set the vehicle to the following conditions.

Item	Condition
Engine	Warmed up (Engine coolant temperature indicator light: OFF)
Air vent grille	Shutter is fully open.
A/C switch	ON
Temperature adjustment dial	LO (MAX COOL)
FRESH/RECIRC switch	RECIRC
Air flow control dial or switch	VENT
Fan dial	HI (MAX)

In the condition of step (2), idle the engine for 30 minutes.
Read the gauge values on both high pressure side and low pressure side of the manifold gauge.

Measure the air vent grille outlet opening temperature, ambient temperature and humidity.
Preparation tool:

Thermometer/hygrometer

NOTE: For outlet opening temperature, measure the average temperature of center grille assembly and side grille assembly.

Check that the high and low pressures and outlet opening temperature for ambient temperature and humidity is within the standard value described in the chart below.

Manual A/C model

Courtesy of SUBARU OF AMERICA, INC.

Auto A/C model

Courtesy of SUBARU OF AMERICA, INC.

Refer to "DIAGNOSIS WITH SYMPTOM" if the inspection result is not within the standard value. Ref. to AIR CONDITIONER (EXCEPT FOR HEV)>REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET>INSPECTION>INSPECTION WITH PRESSURE SYMPTOM .