How To Proceed With Troubleshooting

The intelligent tester is used in steps  3,  4,  5,  7 and  10.

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

   HINT:

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

4. CHECK DTC AND FREEZE FRAME DATA 

   HINT:

   Record or print the DTC and freeze frame data, if needed.

5. CLEAR DTC AND FREEZE FRAME DATA 
6. VISUAL INSPECTION 
7. SETTING CHECK (TEST) MODE DIAGNOSIS 
8. PROBLEM SYMPTOM CONFIRMATION 

   HINT:

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

   PROBLEM SYMPTOMS CHART
   
   

   Malfunction does not occur	Malfunction occurs
   A	B

   B:  GO TO STEP  10

   A: Go to Next Step 

9. SYMPTOM SIMULATION 
10. DTC CHECK 
    SYMPTOMS CHART
    
    

    Trouble code	No code
    A	B

    B:  GO TO STEP  12

    A: Go to Next Step 

11. DTC CHART 

    GO TO STEP  14

12. BASIC INSPECTION 
    DTC CHART
    
    

    Wrong parts not confirmed	Wrong parts confirmed
    A	B

    B:  GO TO STEP  17

    A: Go to Next Step 

13. PROBLEM SYMPTOMS TABLE 
    PROBLEM SYMPTOMS
    
    

    Wrong circuit confirmed	Wrong parts confirmed
    A	B

    B:  GO TO STEP  17

    A: Go to Next Step 

14. CHECK ECM POWER SOURCE CIRCUIT 
15. CIRCUIT INSPECTION 
    MALFUNCTION CHART
    
    

    Malfunction not confirmed	Malfunction confirmed
    A	B

    B:  GO TO STEP  18

    A: Go to Next Step 

16. CHECK FOR INTERMITTENT PROBLEMS 

    NEXT:  GO TO STEP  18

17. PARTS INSPECTION 
18. IDENTIFICATION OF PROBLEM 
19. ADJUST AND/OR REPAIR 
20. CONFIRMATION TEST 

    NEXT: END