How To Proceed With Troubleshooting

HINT:

Techstream should be used in steps 3, 4, 5, 7 and 10.

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

   HINT:

   If the display indicates a communication fault which 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. SET CHECK MODE DIAGNOSIS 
8. CONFIRM PROBLEM SYMPTOMS 

   HINT:

   If the engine does not start, perform steps 10 and 12 first.

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   Malfunction does not occur	A
   Malfunction occurs	B

   B:  Go to STEP  10

   A: Go to next step 

9. SIMULATE SYMPTOMS 
10. CHECK FOR DTC 

    Result 

    RESULT CHART
    
    

    Result	Proceed to
    Trouble code	A
    No code	B

    B:  Go to STEP  12

    A: Go to next step 

11. REFER TO DTC CHART 

    NEXT:  Go to STEP  14

12. CONDUCT BASIC INSPECTION 

    Result 

    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 

    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 
15. CONDUCT CIRCUIT INSPECTION 

    Result 

    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 

    GO TO STEP  18

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

    NEXT: END