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 DLC3.

4. CHECK DTC AND FREEZE FRAME DATA

   HINT:

   Record or print 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 SYMPTOM 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
    DTC CHART
    
    

    Malfunction code	No code
    A	B

    B: GO TO STEP  12

    A: GO TO NEXT STEP

11. DTC CHART

    NEXT: 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 SYMPTOM CHART
    
    

    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. ADJUSTMENT, REPAIR
20. CONFIRMATION TEST

    END