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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (Lighting System (Int) (Hybrid) - Diagnostics & Circuit Tests) >> LIGHTING SYSTEM (for HV Model) >> Power Switch Illumination Circuit [06/2018 - ] >> Procedure

Power Switch Illumination Circuit [06/2018 - ]: Procedure

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  1. PERFORM ACTIVE TEST USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Smart Access / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Smart Access > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Power/Engine SW Light Power switch illumination OFF or ON -

      Body Electrical > Smart Access > Active Test 

      Tester Display
      Power/Engine SW Light

      OK

      Power switch illumination comes on.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - ]  

    Result: 

    NG 

    See step  2

  2. INSPECT POWER SWITCH 
    1. Remove the power switch.

      Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - ]

    2. Inspect the power switch.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE POWER SWITCH. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (POWER SWITCH - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) 
    1. Disconnect the G47 certification ECU (smart key ECU assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G49-9 (SWIL) - G47-10 (SWIL) Always Below 1 Ω
      G49-6 (AGND) - G47-11 (AGND) Always Below 1 Ω
      G49-9 (SWIL) or G47-10 (SWIL) - Body ground Always 10 kΩ or higher
      G49-6 (AGND) or G47-11 (AGND) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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