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Basic Diagnostic Procedure: Procedure

WARNING: This page is about a different car, the 2011 Subaru Tribeca. However, it is still accessible from the selected car via links, so may be relevant.
BASIC DIAGNOSTIC PROCEDURE

Step Check Yes No
1 START INSPECTIONS. 
  1. Perform the pre-inspection. Refer to INSPECTION , General Description.
  2. Perform the self-diagnosis. Refer to OPERATION , Diagnostic Chart for Self-diagnosis.
 Does the self-diagnosis operate? Go to step 2.  Refer to A/C OR SELF-DIAGNOSIS SYSTEMS DO NOT OPERATE , Diagnostics for A/C System Malfunction.
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. Go to step 3. 
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? Go to step 4.  Refer to COMPARTMENT TEMPERATURE DOES NOT CHANGE, OR A/C SYSTEM DOES NOT RESPOND PROMPTLY , Diagnostics for A/C System Malfunction.
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. Refer to COMPARTMENT TEMPERATURE DOES NOT CHANGE, OR A/C SYSTEM DOES NOT RESPOND PROMPTLY , Diagnostics for A/C System Malfunction.
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