A/C performance test inspection

2019 Nissan-Datsun Maxima V6-3.5L

A/C Performance test-Inspection

AIR CONDITIONING INSPECTION PROCEDURE:

  1. Connect recovery/recycling/recharging equipment (For HFC-134a) or manifold gauge.
  2. Start the engine, and set to the following condition.
Surrounding condition Indoors or in the shade(in a well-ventilated place)
Vehicle condition

 

 

Door Closed
Door glass Full open
Hood Open
Engine speed Idle speed
A/C condition Temperature control switch or dial Full cold
A/C switch ON
Air outlet Vent(ventilation)
Intake door position Recirculation
Fan(blower) speed Maximum speed set
  1. Maintain test condition until A/C system becomes stable.(Approximately 10 minutes)
  2. Check that test results of recirculating-to-discharge air temperature and ambient air temperature-to-operating pressure are within the specified value.
  3. When test results are within the specified value, inspection is complete.

If any of test result is out of the specified value Click Here

 

Inside air (Recirculating air) at blower assembly inlet. Discharge air temperature from center ventilator C / F
Relative humidity

%

Air Temperature

C/F

1st Row 2nd Row
50-60 25 (77) 9.6-10.7 (49-51) 9.8-11.0(50-52)
30 (86) 9.5-10.5 (49-51) 10.2-11.3 (50-52)
35 (95) 13.9-15.0 (57-59) 15.2-16.4 (59-62)
40 (104) 16.9-18.8 (62-66) 17.8-19.8 (64-68)
60-70 25 (77) 10.7-11.9 (51-53) 11.0-12.3 (52-54)
30 (86) 10.5-11.5 (51-53) 11.3-12.4 (52-54)
35 (95) 15.0-16.1 (59-61) 16.4-17.6 (62-64)
40 (104) 18.8-20.7 (66-69) 19.8-21.8 (68-71)

 

 

AMBIENT AIR TEMPERATURE-TO-OPERATING PRESSURE TABLE

Fresh air   High-pressure (Discharge side) Kpa (kg/cm2,psi) Low-pressure (Suction side) Kpa (kg/cm2,psi)
Relative humidity % Air temperature C / F
50-70 25 (77) 1020-1255

(10.4-12.8,148-182)

225-285

(2.3-2.9,33-41)

30 (86) 1020-1255

(10.4-12.8,148-182)

215-265

(2.2-2.7,33-38)

35 (95) 1196-1461

(12.2-14.9,174-212)

215-265

(2.2-2.7,33-38)

40 (104) 1471-1804

(15.0-18.4,213-262)

285-345

(2.9-3.5,41-50)

 

 

 

 

Summary
AC performance test inspection
Article Name
AC performance test inspection
Description
AC performance test.Know how is the ac in your car is supposed to be cooling.Manufacturer ac values to find out if the ac is working fine.Specific easy to understand guide.
Author
Publisher Name
Auto A/C Repair LLC.
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