Assignment: Case Study on Automotive HVAC Issues

Objective: In this assignment, students will be presented with a case study involving a vehicle experiencing HVAC $($Heating$,$ Ventilation, and Air Conditioning$)$ issues. The goal is for students to apply their knowledge of automotive HVAC systems, diagnose the problems, outline a step$-$by$-$step diagnostic procedure, and recommend a course of action for repair.

Assignment Tasks:

Outline a Step$-$by$-$Step Diagnostic Procedure:

Task $1$: Develop a systematic diagnostic procedure for each identified issue. Include specific tests, inspections, and tools that would be necessary. $($choose $3$ issues$)$

Task $2$: Consider the logical sequence of diagnostic steps to efficiently pinpoint the root causes of the problems.

Documentation and Communication:

Task $1$: Create a concise report summarizing your diagnostic procedure and recommended course of action. Use clear and professional language suitable for communication with both technical and nontechnical stakeholders.

HVAC Issues:

The owner notes that the heater takes a long time to warm up$,$ and even at its maximum setting, the cabin remains colder than expected during winter.

In warmer weather, the owner experiences insufficient cooling from the AC$.$ The airflow is not as cold as it used to be$,$ even with the system set to the lowest temperature.

The owner reports hearing strange noises, such as rattling or clicking, when the HVAC system is active.

The airflow from both the heating and cooling systems is weak, even when the fan is set to high.

The owner notices unpleasant smells coming from the vents when the HVAC system is active.

The HVAC system works sporadically, with the heating or cooling functions cutting in and out unexpectedly.

The temperature inside the cabin fluctuates inconsistently despite setting the HVAC controls to a specific temperature.

The owner observes water leaks inside the cabin, especially when the $AC$ is active.