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Home >> Pontiac >> 2001 >> Aztek V6-3.4L VIN E >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> Diagnostic Starting Point
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Diagnostic Starting Point

The Heating, Ventilation and Air Conditioning (HVAC) system is divided into two separate sections. The first, Heating, Ventilation and Air Conditioning, has all procedures that pertain to a HVAC component or function that is not specifically associated with the manual control system. The second, HVAC Systems - Manual, has all procedures specific to the Manual control system.

Begin the system diagnosis with the Diagnostic System Check - HVAC Systems - Manual.

The Diagnostic System Check will provide the identification of the control module(s) which command the system.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Review the Description and Operation information to help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine it the condition described by the customer is normal operation. The HVAC Description and Operation information is divided into:
^ Air Delivery Description and Operation in HVAC Systems - Manual
^ Air Temperature Description and Operation in HVAC Systems - Manual

The Air Delivery Description and Operation contains the following topics:
^ Air Speed
^ Air Distribution

The Air temperature Description and Operation contains the following topics:
^ Heater Mode
^ A/C Mode
^ A/C Cycle

Begin the system diagnosis by reviewing the system Description and Operation Refer to Air Delivery Description and Operation and Air Temperature Description and Operation for the CJ3 system. Reviewing the Description and Operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine if the condition described by the customer is normal operation. Refer to Diagnostic System Check - HVAC Systems Manual in order to identify the correct procedure for diagnosing the system and where the procedure is located. Initial Inspection and Diagnostic Overview

"For a description of the RPO Code(s) shown in this article or any of the images therein, refer to the RPO Code List found at Vehicle/Application ID". RPO Codes
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