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Home >> Lexus >> 2023 >> LS 500h >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Clock System - Diagnostics & Symptom Tests >> Clock System >> How To Proceed With Troubleshooting [10/2022 - 10/2023] >> Procedure

How To Proceed With Troubleshooting [10/2022 - 10/2023]: Procedure

  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 AUXILIARY BATTERY VOLTAGE 
    1. Measure the auxiliary battery voltage with the power switch off.

      Standard voltage

      11 to 14 V

      HINT: 

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

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK AUDIO AND VISUAL SYSTEM 
    1. Using the Techstream, check if the audio and visual system is functioning normally.
      1. Check for DTCs and note any codes that are output.

        Body Electrical > Navigation System > Trouble Codes 

      2. Clear the DTCs.

        Body Electrical > Navigation System > Clear DTCs 

      3. Recheck for DTCs by simulating the operation indicated by the DTCs.

        Body Electrical > Navigation System > Trouble Codes 

      OK

      DTCs are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO AUDIO AND VISUAL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023] 

    Result: 

    OK 

    See step  5

  5. PROBLEM SYMPTOMS TABLE 

    HINT: 

    Refer to Problem Symptoms Table.

    Refer to PROBLEM SYMPTOMS TABLE [10/2022 - 10/2023] 

    Result

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

    Result: 

    PERFORM TROUBLESHOOTING BASED ON PROBLEM SYMPTOM. Refer to  PROBLEM SYMPTOMS TABLE [10/2022 - 10/2023]  

    Result: 

    See step  6

  6. OVERALL ANALYSIS AND TROUBLESHOOTING 
    1. Terminals of ECU

      Refer to TERMINALS OF ECU [10/2022 - 10/2023] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. ADJUST, REPAIR OR REPLACE 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END