How To Proceed With Troubleshooting

The intelligent tester can be used at steps  4,  5,  6 and  13.

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. SYMPTOM SIMULATION 
5. CHECK BODY MULTIPLEX COMMUNICATION SYSTEM 
   1. Check for the DTC output.

   MULTIPLEX DTC OUTPUT (PROCEED TO "BODY MULTIPLEX COMMUNICATION SYSTEM") 

   NO MULTIPLEX DTC (GO TO STEP   6 ) 

6. DTC CHECK 

   MALFUNCTION CODE (GO TO STEP   7 ) 

   NORMAL SYSTEM CODE (GO TO STEP   8 ) 

7. DTC TABLE 

   GO TO STEP  10

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

    NEXT: END