How To Proceed With Troubleshooting

HINT:

Step  3,  4,  9:

Diagnostic steps permitting the use of the intelligent tester.

1. VEHICLE BROUGHT TO WORK SHOP 
2. CUSTOMER PROBLEM ANALYSIS 
3. CHECK BODY MULTIPLEX COMMUNICATION SYSTEM 
   1. Check that the DTCs output.

      HINT:

      The ECM of this system is connected to the multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the multiplex communication system.

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

   DTC DOES NOT OUTPUT (GO TO STEP 4) 

4. THE DTCs CHECK 

   MALFUNCTION CODE (GO TO STEP 5) 

   NORMAL CODE (GO TO STEP   6 ) 

5. DTC CHART 

   GO TO STEP   9 

6. PROBLEM SYMPTOM CONFIRMATION 

   SYMPTOM DOES NOT OCCUR (GO TO STEP 7) 

   SYMPTOM OCCURS (GO TO STEP   8 ) 

7. SYMPTOM SIMULATION 

   GO TO STEP   9 

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

    END