How To Proceed With Troubleshooting

The Techstream can be used at step 4, 5, 6, 12.

1. VEHICLE BROUGHT TO WORK SHOP 
2. CUSTOMER PROBLEM ANALYSIS 
   1. Confirm problem symptoms.
3. PROBLEM SYMPTOM CONFIRMATION 

   SYMPTOM DOES NOT OCCUR (GO TO STEP   4 ) 

   SYMPTOM OCCURS (GO TO STEP   5 ) 

4. CHECK BODY MULTIPLEX COMMUNICATION SYSTEM 
   1. Check for the DTC outputs.

      MULTIPLEX DTC OUTPUTS (PROCEED TO " MULTIPLEX COMMUNICATION SYSTEM  ") 

      NO MULTIPLEX DTC (GO TO STEP   5 ) 

5. DTC CHECK (OTHER THAN MULTIPLEX DTC) 

   MALFUNCTION CODE (GO TO STEP   6 ) 

   NORMAL CODE (GO TO STEP   7 ) 

6. DTC CHART 

   GO TO STEP  9

7. PROBLEM SYMPTOMS TABLE 
8. TERMINALS OF ECU 
9. CIRCUIT INSPECTION 
10. IDENTIFICATION OF PROBLEM 
11. REPAIR OR REPLACE 
12. CONFIRMATION TEST 

    NEXT: END