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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 840 (Heating, Ventilation And Air Conditioning) >> Diagnostic Information and Procedures >> Air Conditioning (A/C) System Performance Test >> Test Description

Test Description

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The numbers below refer to the step numbers on the diagnostic table.

  1. This step determines if the A/C system has at least the minimum refrigerant charge required to operate the system without damage.
  2. This step measures the performance of the A/C system.
  3. This step is to allow for vehicle variations as well as high ambient air temperatures.

Fig 1: Air Conditioning System Performance Test Chart (Step 1 To 2)
G01454156Courtesy of GENERAL MOTORS CORP.
Fig 2: Air Conditioning System Performance Test Chart (Step 3 To 8)
G01454157Courtesy of GENERAL MOTORS CORP.
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