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Home >> Lexus >> 2021 >> LS 500h AWD >> Repair and Diagnosis (Single Page) >> Steering >> Steering Column >> Power Tilt & Power Telescopic Steering Column System - Diagnostics - Introduction >> Power Tilt And Power Telescopic Steering Column System >> How To Proceed With Troubleshooting [10/2023 - ] >> Procedure

How To Proceed With Troubleshooting [10/2023 - ]: Procedure

  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. INSPECT AUXILIARY BATTERY VOLTAGE 

    Standard voltage

    11 to 14 V (Power switch off)

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

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK CAN COMMUNICATION SYSTEM* 
    1. Use the Techstream to check if the CAN communication system is functioning normally.

      w/ Front LiDAR Sensor: Refer to DIAGNOSIS SYSTEM [10/2023 - ]

      w/o Front LiDAR Sensor: Refer to DIAGNOSIS SYSTEM [10/2023 - ]

      Result

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

    Result: 

    GO TO CAN COMMUNICATION SYSTEM 

    w/ Front LiDAR Sensor: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]

    w/o Front LiDAR Sensor: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]

    Result: 

    See step  4

  4. CHECK FOR DTCs* 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [10/2017 - ] 

      Body Electrical > Tilt&Telescopic > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    Result: 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2023 - ]  

    Result: 

    See step  5

  5. PROBLEM SYMPTOMS TABLE 
    1. Refer to Problem Symptoms Table.

      Refer to PROBLEM SYMPTOMS TABLE [10/2023 - ] 

      Result

      Result Proceed to
      Problem symptom does not occur. A
      Problem symptom occurs. B

    Result: 

    See step  7

    Result: 

    See step  6

  6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Terminals of ECU.

      Refer to TERMINALS OF ECU [10/2017 - ] 

    2. Data List / Active Test.

      Refer to DATA LIST / ACTIVE TEST [10/2017 - ] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. REPAIR 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END