How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the air conditioning system.
• *: Use the intelligent tester.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT 

2. CUSTOMER PROBLEM ANALYSIS 
   1. Confirm the problem symptoms.

   NEXT 

3. CHECK AND CLEAR DTCS* 

   NEXT 

4. PROBLEM SYMPTOM CONFIRMATION 

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Symptom does not occur	A
   Symptom occurs	B

   B : GO TO STEP   6 

   A : Go to next step 

5. SYMPTOM SIMULATION 

   NEXT 

6. CHECK MULTIPLEX COMMUNICATION SYSTEM* 
   1. Check for the DTC outputs.

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      No multiplex DTC	A
      Multiplex DTC output	B

   B : GO TO MULTIPLEX COMMUNICATION SYSTEM 

7. CHECK CAN COMMUNICATION SYSTEM* 

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   No CAN DTC	A
   CAN DTC output	B

   B : GO TO CAN COMMUNICATION SYSTEM 

   A : Go to next step 

8. DTC CHECK (OTHER THAN MULTIPLEX DTC)* 

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Malfunction code	A
   Normal code	B

   B : GO TO STEP   10 

   A : Go to next step 

9. DTC CHART 

   NEXT 

10. PROBLEM SYMPTOMS TABLE  

    NEXT 

11. TERMINALS OF ECU 

    NEXT 

12. CIRCUIT INSPECTION 

    NEXT 

13. IDENTIFICATION OF PROBLEM 

    NEXT 

14. REPAIR OR REPLACE 

    NEXT 

15. CONFIRMATION TEST 

    NEXT : END