How To Proceed With Troubleshooting

HINT:

• Perform troubleshooting in accordance with the following flowchart.
• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 

   11 to 14 V 

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

3. CHECK AND CLEAR DTCs* 
4. PROBLEM SYMPTOM CONFIRMATION 

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   Symptom does not occur.	A
   Symptom occurs.	B

   B: GO TO STEP 6 

   A: GO TO NEXT STEP 

5. SYMPTOM SIMULATION 
6. CHECK CAN COMMUNICATION SYSTEM* 
   1. Use the Techstream to check if the CAN communication system is functioning normally (See HOW TO PROCEED WITH TROUBLESHOOTING ).

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   CAN communication DTC Is not output.	A

   RESULT CHART
   
   

   Result	Proceed to
   CAN communication DTC Is output.	B

   B: GO TO CAN COMMUNICATION SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

   A: GO TO NEXT STEP 

7. CHECK LIN COMMUNICATION SYSTEM* 
   1. Use the Techstream to check if the LIN communication system is functioning normally (See HOW TO PROCEED WITH TROUBLESHOOTING ).

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      LIN Communication DTC Is not output.	A
      LIN Communication DTC Is output.	B

      B: GO TO LIN COMMUNICATION SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

      A: GO TO NEXT STEP 

8. DTC CHECK* 
   1. Check for DTCs (See DTC CHECK / CLEAR ).

      Result 

      RESULT CHART
      
      

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

      A: GO TO STEP 9 

      B: GO TO NEXT STEP 

9. PROBLEM SYMPTOMS TABLE 

   Result 

   RESULT CHART
   
   

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

   B: GO TO STEP  11

   A: GO TO NEXT STEP 

10. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Terminals of ECU (See TERMINALS OF ECU ).
    2. Data List / Active Test (See DATA LIST / ACTIVE TEST ).
11. REPAIR OR REPLACEMENT 
12. CONFIRMATION TEST* 

    NEXT: END