HVAC SYSTEM (HEATER, VENTILATOR AND A/C) > Refrigerant Pressure with Manifold Gauge Set
PROCEDURE
1. REFRIGERANT GAS PRESSURE INSPECTION
1. 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.
2. Check the refrigerant pressure.
Preparation tool:
Manifold gauge set
(1) Connect the manifold gauge set, and start the engine.
(2) 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 | Auto A/C model: 5/7 level |
Manual A/C model: 3/4 level |
(3) In the condition of step (2), idle the engine for 30 minutes.
(4) Read the gauge values on both high pressure side and low pressure side for manifold gauge.
3. Measure the air vent grille outlet opening temperature, ambient temperature and humidity.
Preparation tool:
Thermometer and hygrometer
NOTE:
For outlet opening temperature, measure the average temperature of center grille assembly and side grille assembly.
4. 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.

5. Refer to “DIAGNOSIS WITH SYMPTOM” if the inspection result is not within the standard value. Refrigerant Pressure with Manifold Gauge Set > INSPECTION">
Inspection
Relay and fuseHelp line
The help line (distance marker and vehicle
width line) is a guide to help you realize
the actual distance from the screen image.
1) Vehicle width line (oblique vertical line)
2) Approx. 10 feet (3 m) from the bumper
(green horizontal line)
3) Approx. 3 feet (1 m) from the bumper
(yellow hor ...
Disassembly
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ECO gauge screen (if equipped)
Average fuel consumption corresponding
to the driving distance of each trip meter
ECO gauge
The gauge pointer shows the difference
between the current fuel consumption and
the average fuel consumption that is
displayed on the center part of the screen.
If the gauge pointer moves ...