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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 878 (Heating, Ventilation And Air Conditioning) >> Diagnostic Information and Procedures >> Air Conditioning (A/C) System Performance Test >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

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 (A/C) System Performance Test (Steps 1-2)
G01568478Courtesy of GENERAL MOTORS CORP.
Fig 2: Air Conditioning (A/C) System Performance Test (Steps 3-8)
G01568479Courtesy of GENERAL MOTORS CORP.
Fig 3: A/C System Pressure - Zone Classification Graph
G01568480Courtesy of GENERAL MOTORS CORP.
Fig 4: A/C Performance Chart
G01568481Courtesy of GENERAL MOTORS CORP.
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