ASC SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use the following procedure to troubleshoot the ASC system.

  • *: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK

    Result
    Proceed to
    NEXT

    NEXT

  3. INSPECT AUXILIARY BATTERY VOLTAGE


    1. Measure the auxiliary battery voltage with the power switch off.

      Standard Voltage
      11 to 14 V

      If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

      Result
      Proceed to
      NEXT

    NEXT

  4. INSPECT CAN COMMUNICATION SYSTEM*


    1. Use the GTS to check if the CAN communication system is functioning normally.

      Click here

      Result
      Result Proceed to
      CAN communication system DTCs are not output. A
      CAN communication system DTCs are output. B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  5. CHECK FOR DTC*


    1. Check for DTCs and note any codes that are output.

      Click here


      Body Electrical > ASC > Trouble Codes

    2. Clear the DTCs.

      Click here


      Body Electrical > ASC > Clear DTCs

    3. Recheck for DTCs. Try to reproduce the ASC system DTCs by duplicating the conditions indicated by the DTCs.

      Click here


      Body Electrical > ASC > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  6. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table.

      Click here

      Result
      Result Proceed to
      Fault is not listed in Problem Symptoms Table. A
      Fault is listed in Problem Symptoms Table. B

    B

    GO TO PROBLEM SYMPTOMS TABLE Click here

    A

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Operation Check

      Click here

    2. Terminals of ECU

      Click here

    3. Data List / Active Test

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. ADJUST, REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  9. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END