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Home >> Lexus >> 2020 >> LS 500 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostics - Introduction (1 Of 2) >> Meter / Gauge 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. CUSTOMER PROBLEM ANALYSIS 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

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

      Standard voltage

      11 to 14 V

      If the 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 CAN communication DTCs are output.

      Refer to DIAGNOSIS SYSTEM [10/2023 - ]

      Result

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

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

    Result: 

    See step  5

  5. CHECK CXPI COMMUNICATION SYSTEM* 
    1. Using the GTS, check for CXPI communication system DTCs.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]

      Result

      Result Proceed to
      CXPI communication DTCs are not output A
      CXPI communication DTCs are output B

    Result: 

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

    Result: 

    See step  6

  6. CHECK FOR DTC* 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [12/2017 - ]

      Body Electrical > Combination Meter > 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  7

  7. CHECK VEHICLE CONTROL HISTORY (RoB)* 
    1. Using the GTS, check for Vehicle Control History (RoB).

      Body Electrical > Combination Meter > Utility 

      Tester Display
      Vehicle Control History (RoB)
    2. Make a note of the output Vehicle Control History (RoB).

      Result

      Result Proceed to
      Vehicle Control History (RoB) is not output A
      Vehicle Control History (RoB) is output B

    Result: 

    GO TO VEHICLE CONTROL HISTORY (RoB). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]  

    Result: 

    See step  8

  8. PROBLEM SYMPTOM CONFIRMATION 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  9

  9. SYMPTOM SIMULATION 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  10

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

      Refer to PROBLEM SYMPTOMS TABLE [10/2023 - ]

      Result

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

    Result: 

    GO TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [10/2023 - ] 

    Result: 

    See step  11

  11. CIRCUIT INSPECTION 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  12

  12. REPAIR OR REPLACE 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  13

  13. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END