HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Basic Diagnostic Procedure

PROCEDURE

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1.START INSPECTIONS.

1) Perform the pre-inspection.

2) Perform the self-diagnosis.

Does the self-diagnosis operate?

2.IDENTIFY MALFUNCTION PART.

Identify the malfunction part with self-diagnosis.

Can the malfunction part be confirmed?

Repair the malfunctioning part in accordance with each diagnostic chart.

3.CHECK COMPARTMENT TEMPERATURE.

1) Turn the A/C switch to ON.

2) Turn the temperature control dial at maximum cool position.

3) Check the compartment temperature change.

Does the compartment temperature change?

4.CHECK A/C SYSTEM RESPONSE.

Change the temperature setting, and check the response of A/C system.

Does the A/C system respond quickly?

A/C system is normal.