How To Proceed With Troubleshooting

HINT:

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

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK 
3. INSPECT BATTERY VOLTAGE 

   Standard voltage: 

   11 to 14 V 

   If the voltage is below 11 V, recharge or replace the battery before proceeding.

4. CHECK CAN COMMUNICATION SYSTEM* 
   1. Use Techstream to check if the CAN communication system is functioning.

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      CAN DTC is not output	A
      CAN DTC is output	B

   B: Go to CAN COMMUNICATION SYSTEM

   A: Go to next step 

5. CHECK DTC* 
   1. Check for DTCs and write down any DTCs that are output.
   2. Clear the DTCs.
   3. Recheck for DTCs. Based on the DTCs output above, try to cause output of the air conditioning system DTC by simulating the operation indicated by the DTC.

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      DTC is not output	A
      DTC is output	B

   B: Go to step  8

   A: Go to next step 

6. REFER TO PROBLEM SYMPTOMS TABLE 

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Fault is not listed in problem symptoms table	A
   Fault is listed in problem symptoms table	B

   B: Go to step  8

   A: Go to next step 

7. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. DATA LIST / ACTIVE TEST (see DATA LIST / ACTIVE TEST  )
   2. Terminals of ECU (see TERMINALS OF ECU  )
8. ADJUST, REPAIR OR REPLACE 
9. CONFIRMATION TEST 

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