1.START INSPECTIONS.
1) Perform the pre-inspection. 
2) Perform the self-diagnosis.
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Does the self-diagnosis operate?
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2.IDENTIFY MALFUNCTION PART.
Identify the malfunction part with self-diagnosis.
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Can the malfunction part be confirmed?
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Repair the malfunctioning part in accordance with each diagnostic chart.
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3.CHECK COMPARTMENT TEMPERATURE.
1) Turn on the A/C switch.
2) Turn the temperature control dial at maximum cool position.
3) Check the compartment temperature change.
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Does the compartment temperature change?
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4.CHECK A/C SYSTEM RESPONSE.
Change the temperature setting, and check the response of A/C system.
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Does the A/C system respond quickly?
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