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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 181 (Lane Control System (Except Hybrid) - Diagnostic Codes & Circuit Tests) >> LANE CONTROL SYSTEM (for Gasoline Model) >> Steering Pad Switch Circuit [06/2018 - 08/2020] >> Procedure

Steering Pad Switch Circuit [06/2018 - 08/2020]: Procedure

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  1. INSPECT STEERING PAD SWITCH ASSEMBLY 
    1. Remove the steering pad switch assembly.

      Refer to REMOVAL [06/2018 - 08/2021]

    2. Inspect the steering pad switch assembly.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  COMPONENTS [06/2018 - ] 

    Result: 

    OK 

    See step  2

  2. INSPECT SPIRAL CABLE SUB-ASSEMBLY 
    1. Remove the spiral cable sub-assembly.

      Refer to REMOVAL [06/2018 - 08/2020]

    2. Inspect the spiral cable sub-assembly.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  COMPONENTS [06/2018 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA) 
    1. Disconnect the G20 spiral cable sub-assembly connector.
    2. Disconnect the P5 forward recognition camera connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G20-6 (DIST) - P5-3 (LKSW) Always Below 1 Ω
      G20-6 (DIST) or P5-3 (LKSW) - Body ground Always 10 kΩ or higher
    4. Connect the P5 forward recognition camera connector.
    5. Connect the G20 spiral cable sub-assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND) 
    1. Disconnect the G20 spiral cable sub-assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G20-2 (ECC) - Body ground Always Below 1 Ω
    3. Connect the G20 spiral cable sub-assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - 08/2021] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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