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Home >> Lexus >> 2021 >> LC 500 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes, Symptom Tests & Circuit Tests (Convertible) >> Meter / Gauge System >> Steering Pad Switch Circuit [07/2020 - 05/2023] >> Procedure

Steering Pad Switch Circuit [07/2020 - 05/2023]: Procedure

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

      Refer to REMOVAL [07/2020 - 05/2023]

    2. Inspect the steering pad switch assembly.

      Refer to INSPECTION [07/2020 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [07/2020 - 05/2023] 

    Result: 

    OK 

    See step  2

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

      Refer to REMOVAL [07/2020 - 05/2023]

    2. Inspect the spiral cable sub-assembly.

      Refer to INSPECTION [07/2020 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  REMOVAL [07/2020 - 05/2023] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY) 
    1. Disconnect the P25 combination meter assembly connector.
    2. Disconnect the P19 spiral cable sub-assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      P25-2 (MSM+) - P19-11 (+DP) Always Below 1 Ω
      P25-3 (MSTI) - P19-10 (+DP2) Always Below 1 Ω
      P25-1 (MSSL) - Body ground Always Below 1 Ω
      P19-4 (EAU) - Body ground Always Below 1 Ω
      P25-2 (MSM+) - Other terminals and body ground Always 10 kΩ or higher
      P25-3 (MSTI) - Other terminals and body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [07/2020 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR