How To Proceed With Troubleshooting

HINT:

The intelligent tester should be used in steps  3,  4,  5 and  10.

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS 
3. CONNECT INTELLIGENT TESTER TO THE DLC3 

   HINT:

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

4. CHECK DTC AND FREEZE FRAME DATA 

   HINT:

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

5. CLEAR DTC AND FREEZE FRAME DATA 
6. CONDUCT VISUAL INSPECTION 
7. CONFIRM PROBLEM SYMPTOMS 

   HINT:

   If the engine does not start, perform steps  9 and  11 first.

   Result 

   RESULT
   
   

   Result	Proceed to
   Malfunction does not occur	A
   Malfunction occur	B

   B: GO TO STEP   10 

   A: GO TO NEXT STEP 

8. SIMULATE SYMPTOMS 
9. CHECK DTC 

   Result 

   RESULT
   
   

   Result	Proceed to
   Malfunction code	A
   No code	B

   B: GO TO STEP   11 

   A: Go to next step 

10. REFER TO  DIAGNOSTIC TROUBLE CODE CHART  

    NEXT: GO TO STEP   13 

11. CONDUCT BASIC INSPECTION 

    Result 

    RESULT
    
    

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

    B: GO TO STEP   16 

    A: Go to next step 

12. REFER TO PROBLEM SYMPTOMS TABLE 

    Result 

    RESULT
    
    

    Result	Proceed to
    Malfunctioning circuit confirmed	A
    Malfunctioning parts confirmed	B

    B: GO TO STEP   16 

    A: GO TO NEXT STEP 

13. CHECK ECU POWER SOURCE CIRCUIT 
14. CONDUCT CIRCUIT INSPECTION 

    Result 

    RESULT
    
    

    Result	Proceed to
    Malfunction not confirmed	A
    Malfunction confirmed	B

    B: GO TO STEP   17 

    A: GO TO NEXT STEP 

15. CHECK FOR INTERMITTENT PROBLEMS 

    NEXT: GO TO STEP   17 

16. CONDUCT PARTS INSPECTION 
17. IDENTIFY PROBLEM 
18. ADJUST AND/OR REPAIR 
19. CONDUCT CONFIRMATION TEST 

    NEXT: END