How To Proceed With Troubleshooting

HINT:

*: Use the Intelligent tester or Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT 

2. CUSTOMER PROBLEM ANALYSIS 

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3. CONNECT INTELLIGENT TESTER OR TECHSTREAM TO DLC3 

   HINT:

   If the display indicates a communication fault in the tester, inspect the DLC3.

   NEXT 

4. CHECK DTC AND FREEZE FRAME DATA* 

   HINT:

   Record or print DTCs and freeze frame data, if necessary.

   NEXT 

5. CLEAR DTC AND FREEZE FRAME DATA* 

   NEXT 

6. CONDUCT VISUAL INSPECTION 

   NEXT 

7. SET CHECK MODE DIAGNOSIS* 

   NEXT 

8. CONFIRM PROBLEM SYMPTOMS 

   HINT:

   If the engine does not start, first perform the "CHECK DTC" procedures and "CONDUCT BASIC INSPECTION" procedures below.

   PROBLEM SYMPTOMS
   
   

   Result	Proceed to
   Malfunction does not occur	A
   Malfunction occurs	B

   B: GO TO STEP   10 

   A: GO TO NEXT STEP 

9. SIMULATE SYMPTOMS 

   NEXT 

10. CHECK DTC* 
    DTC RESULT CHART
    
    

    Result	Proceed to
    Malfunction code	A
    No code	B

    B: GO TO STEP   12 

    A: GO TO NEXT STEP 

11. REFER TO  DTC CHART  

    NEXT 

12. CONDUCT BASIC INSPECTION 
    BASIC INSPECTION RESULT CHART
    
    

    Result	Proceed to
    Malfunctioning parts not confirmed	A
    Malfunctioning parts confirmed	B

    B: GO TO STEP   17 

    A: GO TO NEXT STEP 

13. REFER TO  PROBLEM SYMPTOMS TABLE  
    RESULT CHART
    
    

    Result	Proceed to
    Malfunctioning circuit confirmed	A
    Malfunctioning parts confirmed	B

    B: GO TO STEP   17 

    A: GO TO NEXT STEP 

14. CHECK ECM POWER SOURCE CIRCUIT 

    NEXT 

15. CONDUCT CIRCUIT INSPECTION 
    CIRCUIT INSPECTION RESULT CHART
    
    

    Result	Proceed to
    Malfunction not confirmed	A
    Malfunction confirmed	B

    B: GO TO STEP   18 

    A: GO TO NEXT STEP 

16. CHECK FOR INTERMITTENT PROBLEMS 

    NEXT 

17. CONDUCT PARTS INSPECTION 

    NEXT 

18. IDENTIFY PROBLEM 

    NEXT 

19. ADJUST AND/OR REPAIR 

    NEXT 

20. CONDUCT CONFIRMATION TEST 

    NEXT: END