How To Proceed With Troubleshooting

The intelligent tester can be used at steps  3,  4,  6,  7,  11,  14, and  17.

1. VEHICLE BROUGHT TO WORKSHOP 

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2. CUSTOMER PROBLEM ANALYSIS 

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3. CHECK DTC AND FREEZE FRAME DATA 

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4. CLEAR DTC AND FREEZE FRAME DATA 

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5. PROBLEM SYMPTOM CONFIRMATION 

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6. CHECK CAN COMMUNICATION SYSTEM 
   1. Check for output DTCs.

      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.

      HINT:

      The skid control ECU sends the signals of each warning light to the gateway ECU via CAN communication, and the gateway ECU sends the signals to the combination meter via 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 

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9. PROBLEM SYMPTOM SIMULATION 

   SYMPTOM DOES NOT OCCUR: GO TO STEP 10 

   SYMPTOM OCCURS: GO TO STEP  11

10. SYMPTOM SIMULATION 

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11. DTC CHECK (OTHER THAN CAN AND MULTIPLEX COMMUNICATION SYSTEM DTC) 

    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 

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14. CIRCUIT INSPECTION 

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15. IDENTIFICATION OF PROBLEM 

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16. REPAIR OR REPLACE 

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17. CONFIRMATION TEST 

    NEXT: END