How To Proceed With Troubleshooting

HINT: 

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

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK 

   NEXT: Go to next step 

3. INSPECT BATTERY VOLTAGE 

   Standard voltage

   11 to 14 V

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

   NEXT: Go to next step 

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

      Result

      Result	Proceed to
      CAN DTC is not output	A
      CAN DTC is output	B Refer to DIAGNOSTIC TROUBLE CODE CHART

      B → GO TO CAN COMMUNICATION SYSTEM 

      A: Go to next step 

5. CHECK FOR DTC* 
   1. Check for DTCs.
      1. Write down the DTCs or sensor check codes.
   2. Clear the DTCs or sensor check codes.
   3. Check whether the DTCs or sensor check codes recur.
      1. Reproduce the problem symptoms in accordance with the DTCs or sensor check codes that were written down, and check whether the DTCs or sensor check codes recur.

         HINT: 

         Refer to the DTC chart when any DTCs or sensor check codes are output.

         Result

         Result	Proceed to
         DTC or sensor check code is not output	A
         DTC or sensor check code is output	B

      B → Go to step 8 

      A: Go to next step 

6. REFER TO PROBLEM SYMPTOMS TABLE 

   Result

   Result	Proceed to
   Fault not listed in problem symptoms table	A
   Fault 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, refer to DATA LIST / ACTIVE TEST 
   2. Terminals of ECU, refer to TERMINALS OF ECU 

      NEXT: Go to next step 

8. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

9. CONFIRMATION TEST 

   NEXT → END