How To Proceed With Troubleshooting

The intelligent tester can be used at step 4, 5, 10.

1. VEHICLE BROUGHT TO WORKSHOP 
2. PROBLEM SYMPTOM CONFIRMATION 
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.

   PROCEED TO " MULTIPLEX COMMUNICATION SYSTEM  ") 

   NO MULTIPLEX DTC (GO TO STEP 5 

4. DTC CHECK (OTHER THAN MULTIPLEX DTC) 

   MALFUNCTION CODE (GO TO STEP 6 

   NORMAL CODE (GO TO STEP 7 

5. DTC CHART 

   GO TO STEP 10 

6. PROBLEM SYMPTOM SIMULATION 

   SYMPTOM DOES NOT OCCUR (GO TO STEP 8 

   SYMPTOM OCCURS (GO TO STEP 9 

7. SYMPTOM SIMULATION 

   GO TO STEP 10 

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

    END