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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 245 (Active Noise Control System (Except Hybrid) - Diagnostics - Introduction) >> ACTIVE NOISE CONTROL SYSTEM (for Gasoline Model) >> How To Proceed With Troubleshooting [06/2018 - ] >> Procedure

How To Proceed With Troubleshooting [06/2018 - ]: Procedure

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  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. INSPECT BATTERY VOLTAGE 
    1. Measure the battery voltage.

      Standard Voltage

      11 to 14 V

      HINT: 

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

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication system is functioning normally.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

      Result

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

    Result: 

    B 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    A 

    See step  5

  5. CHECK FOR DTC 
    1. Check for DTCs and note any codes that are output.

      Body Electrical > Active Noise Control > Trouble Codes 

    2. Clear the DTCs.

      Body Electrical > Active Noise Control > Clear DTCs 

    3. Recheck for DTCs. Try to reproduce the active noise control system DTCs by duplicating the conditions indicated by the DTCs.

      Body Electrical > Active Noise Control > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output (Problem symptom occurs) A
      DTCs are output B
      DTCs are not output (Problem symptom does not occur) C

    Result: 

    B 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2018 - ]  

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    A 

    See step  6

  6. PROBLEM SYMPTOMS TABLE 

    HINT: 

    Refer to Problem Symptoms Table.

    Refer to PROBLEM SYMPTOMS TABLE [06/2018 - ] 

    Result

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

    Result: 

    B 

    PERFORM TROUBLESHOOTING BASED ON PROBLEM SYMPTOM. Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - ]  

    Result: 

    A 

    See step  7

  7. OVERALL ANALYSIS AND TROUBLESHOOTING 
    1. Terminals of ECU

      Refer to TERMINALS OF ECU [06/2018 - 09/2022] , or refer to TERMINALS OF ECU [09/2022 - ] 

    2. Data List / Active Test

      Refer to DATA LIST / ACTIVE TEST [06/2018 - ] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  8

  8. ADJUST, REPAIR OR REPLACE 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  9

  9. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END 

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