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Home >> Lexus >> 2021 >> LC 500 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostics - Introduction (Convertible) (1 Of 3) >> SFI System >> Basic Inspection [07/2020 - ] >> Procedure
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Basic Inspection [07/2020 - ]: Procedure

  1. CHECK BATTERY VOLTAGE 
    NOTE:

    Carry out this check with the engine stopped and the engine switch off.

    Result

    Result Proceed to
    11 V or higher A
    Below 11 V B

    Result: 

    CHARGE OR REPLACE BATTERY 

    Result: 

    See step  2

  2. CHECK WHETHER ENGINE CRANKS 

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    PROCEED TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [07/2020 - ]  

    Result: 

    OK 

    See step  3

  3. CHECK WHETHER ENGINE STARTS 

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    See step  6

    Result: 

    OK 

    See step  4

  4. CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY 
    1. Visually check that the air cleaner filter element sub-assembly is not excessively contaminated with dirt or oil.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY 

    Result: 

    OK 

    See step  5

  5. CHECK IDLING SPEED 
    1. Check the engine idling speed.

      Refer to PROCEDURE - Step 9

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    TROUBLESHOOT IDLING SPEED AND PROCEED TO NEXT STEP 

    Result: 

    OK 

    See step  6

  6. CHECK FUEL PRESSURE 
    1. Check the fuel pressure.

      Refer to PROCEDURE - Step 2 [07/2020 - 05/2023] , or refer to PROCEDURE - Step 2 [05/2023 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP 

    Result: 

    OK 

    See step  7

  7. CHECK FOR SPARK 
    1. Perform a spark test.

      Refer to ON-VEHICLE INSPECTION [07/2020 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [07/2020 - ]  

    Result: 

    NG 

    TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP