How To Proceed With Troubleshooting

Use the intelligent tester at steps 3, 4, 6, 7, 8, 11, 14, and 17.

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS 
3. CHECK DTC AND FREEZE FRAME DATA 
4. CLEAR DTC AND FREEZE FRAME DATA 
5. PROBLEM SYMPTOM CONFIRMATION 
6. CHECK CAN COMMUNICATION SYSTEM 
   1. Check for output DTCs (see DIAGNOSIS SYSTEM ).

      HINT:

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

   CAN COMMUNICATION SYSTEM DTC IS OUTPUT: PROCEED TO CAN COMMUNICATION SYSTEM 

   NO CAN COMMUNICATION SYSTEM DTC IS OUTPUT: GO TO STEP 7 

7. CHECK MULTIPLEX COMMUNICATION SYSTEM 
   1. Check for output DTCs (see DTC CHECK / CLEAR ).

      HINT:

      The skid control ECU sends the signals of each warning light to the gateway ECU via the CAN communication, and the gateway ECU sends the signals to the combination meter via the multiplex communication system (BEAN).

   MULTIPLEX COMMUNICATION SYSTEM DTC IS OUTPUT: PROCEED TO MULTIPLEX COMMUNICATION SYSTEM 

   NO MULTIPLEX COMMUNICATION SYSTEM DTC IS OUTPUT: GO TO STEP 8 

8. DTC CHECK AND CLEAR 
9. PROBLEM SYMPTOM SIMULATION 

   SYMPTOM DOES NOT OCCUR:  Go to step  10

   SYMPTOM OCCURS:  Go to step  11

10. SYMPTOM SIMULATION 
11. DTC CHECK (OTHER THAN CAN AND MULTIPLEX COMMUNICATION SYSTEM DTC) 
    1. Check for output DTCs (see DTC CHECK / CLEAR ).

    NORMAL SYSTEM CODE: GO TO STEP 12 

    TROUBLE CODE:  Go to step  13

12. PROBLEM SYMPTOMS TABLE 

    NEXT:  Go to step  14

13. DTC CHART 
14. CIRCUIT INSPECTION 
15. IDENTIFICATION OF PROBLEM 
16. REPAIR OR REPLACE 
17. CONFIRMATION TEST 

    NEXT: END