Chevrolet Trax: Air conditioning (a/c) system performance test

This test measures the operating efficiency of the A/C system under the following conditions:

• The current ambient air temperature
• The current relative humidity
• The high side pressure of the A/C system
• The low side pressure of the A/C system
• The temperature of the air being discharged into the passenger compartment

Test Description

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 temperatures.

Air Conditioning (A/C) System Performance Test

A/C Performance Table

A/C DIAGNOSTICS CHART

HEATING PERFORMANCE DIAGNOSTIC

Heating Performance Diagnostic

DEFROSTING INSUFFICIENT

Defrosting Insufficient

NOISE DIAGNOSIS - BLOWER MOTOR

Noise Diagnosis - Blower Motor

AIR CONDITIONING COMPRESSOR OIL DIAGNOSIS

Air Conditioning Compressor Oil Diagnosis

NOISE DIAGNOSIS - AIR CONDITIONING (A/C) SYSTEM

Noise Diagnosis - Air Conditioning (A/C) System

NOISE DIAGNOSIS - HVAC MODULE

Noise Diagnosis - HVAC Module

ODOR DIAGNOSIS

Odor Diagnosis

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