AIR CONDITIONING SYSTEM(for Manual Air Conditioning System) HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP

   Result
   Proceed to NEXT

   
   

   NEXT

2. INSPECT BATTERY VOLTAGE

   
   

   1. Inspect the battery voltage.

      Standard voltage
      11 to 14 V

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

      Result
      Proceed to NEXT

   
   

   NEXT

3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

   
   

   1. Use the intelligent tester to check if the CAN Communication System is functioning normally.

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

   
   

   B

   GO TO CAN COMMUNICATION SYSTEM Click here

   A

4. CHECK FOR DTC*

   
   

   1. Check for DTCs and note any codes that are output.

      Tech Tips

      Refer to the DTC Check / Clear.

      Click here

   2. Clear the DTCs.

   3. Recheck for DTCs. Based on the DTCs output above, try to force output of the A/C system DTC by simulating the operation indicated by the DTC.

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

   
   

   B

   GO TO STEP 7 Click here

   A

5. PROBLEM SYMPTOMS TABLE

   
   

   1. Refer to Problem Symptoms Table.

      Click here

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

   
   

   B

   GO TO STEP 7 Click here

   A

6. OVERALL ANALYSIS AND TROUBLESHOOTING*

   
   

   1. Data List / Active Test

      Click here

   2. Panel diagnosis (refrigerant shortage check)

      Click here

   3. Terminals of ECU

      Click here

   4. On-Vehicle Inspection

   5. Inspection

      Result
      Proceed to NEXT

   
   

   NEXT

7. ADJUST, REPAIR OR REPLACE

   Result
   Proceed to NEXT

   
   

   NEXT

   END