PERFORMANCE TEST



TEST CONDITION


Item
Settings
Environmental condition
Measurement location
In a shade or indoors
Temperature
20°C - 50°C
Humidity
Relative humidity 30 - 80% RH
Vehicle body condition
Hood
Fully opened
Door
Fully open for door, window, and tailgate
Air conditioner condition
Air conditioner switch
ON
Air volume
Maximum air volume
Temperature control
MAX COOL
Air outlet
FACE
Outside/inside air selection
Air recirculation position
Engine speed
Specified idle speed after warming up
Transmission
N or P

TEST CONDITION SETTING


Check that the temperature/humidity of measurement location satisfies the test conditions, and then set the vehicle body conditions to the designated status according to the test conditions. If the temperature/humidity is not within the test conditions, an accurate judgment cannot be made. Therefore, postpone the performance test.

COOLING PERFORMANCE CHECK



1.Insert a thermometer into the air outlet located at the centre of instrument panel.
note Set a thermometer so that cool air from the air outlet blows directly against the sensing part.
2.Set a wet and dry bulb thermometer in the air intake of the front passenger’s foot area (below the glove box).
note Set a wet and dry bulb thermometer so that cool air does not blow against it.
3.Start the engine to warm up. Confirm that the engine speed of the test condition is satisfied.
4.Set the A/C control panel to the mode instructed in the test conditions.
5.Wait until the air outlet temperature is stable (approximately 10 minutes after the A/C starts), and measure dry-bulb/wet-bulb temperatures at the air outlet and the air intake.
6.If the air outlet temperature is in the range specified by the table below, it is judged normal. If the temperature is outside the permissible range in the table below, refer to the refrigerant gas pressure inspection result, and check each section according to the diagnosis chart of refrigerant system.

Garage ambient temperature °C
20
25
30
35
40
45
50
Discharge air temperature °C
-1.1 - 12.3
4.3 - 17.7
9.7 - 23.1
15.1 - 28.5
20.5 - 33.9
25.5 - 39.3
31.3 - 44.7

REFRIGERANT GAS PRESSURE CHECK


caution
  • The temperature of equipment in the engine room is high and the refrigerant gas pressure is also high immediately after the engine and A/C operation are stopped, thus leave the vehicle for a while, and then perform the refrigerant gas pressure check.
  • On completion, stop the engine and wait until the high-pressure side of the gauge manifold is depressurised. Then remove the quick joints and the others.



1.
caution
  • Place the quick joint onto the service valve, and press to fit the part A securely until the sleeve clicks into place.
  • When connecting, run your hand along the hose while pressing to ensure that there are no bends in the hose.
Check that the engine and A/C are stopped.
2.Close the high-pressure valve of the gauge manifold.
3.Connect the charging hose (red) to the hi-pressure side of the gauge manifold.
4.Connect the quick joint (for high pressure) to the charging hose (red).
5.Install the quick joint (for high pressure) to the high-pressure side service valve of the vehicle.
6.Close the low-pressure valve of the gauge manifold.
7.Connect the charging hose (blue) to the low-pressure side of the gauge manifold.
8.Connect the quick joint (for low pressure) to the charging hose (blue).
9.Install the quick joint (for low pressure) to the low-pressure side service valve of the vehicle.
10.Start and fully warm up the engine, and then check that the engine speed of the test condition is satisfied.
11.Set the A/C control panel to the mode instructed in the test conditions.
12.Measure the high pressure/low pressure, and check that the measurement is within the permissible range of the table below. If the value is outside the permissible range, refer to the cooling performance check result, and perform a check according to the diagnosis chart of refrigerant system.
note Prior to the measurement, wait until the refrigerant pressure is stable. (Approximately 10 minutes after A/C operation start)

Garage ambient temperature °C
20
25
30
35
40
45
50
Compressor high pressure kPa
881 -
1, 377
1, 086 - 1, 582
1,291 - 1,787
1,496 - 1,992
1,701 - 2,197
1,906 - 2,402
2,111 - 2,607
Compressor low pressure kPa
204 - 369
255 - 420
306 - 471
357 - 522
408 - 573
459 - 624
510 - 675