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Home >> Lexus >> 2021 >> LC 500h >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes, Symptom & Circuit Tests >> Meter / Gauge System >> Steering Pad Switch Circuit [01/2017 - ] >> Procedure

Steering Pad Switch Circuit [01/2017 - ]: Procedure

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

      Refer to REMOVAL [01/2017 - 05/2023] , or refer to REMOVAL [05/2023 - ]

    2. Inspect the steering pad switch assembly.

      Refer to INSPECTION [01/2017 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [01/2017 - 05/2023]  , or refer to  REMOVAL [05/2023 - ] 

    Result: 

    OK 

    See step  2

  2. INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY 
    1. Remove the spiral cable with sensor sub-assembly.

      Refer to REMOVAL [01/2017 - 05/2023] , or refer to REMOVAL [05/2023 - ]

    2. Inspect the spiral cable with sensor sub-assembly.

      Refer to INSPECTION [01/2017 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY. Refer to  REMOVAL [01/2017 - 05/2023]  , or refer to  REMOVAL [05/2023 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - COMBINATION METER ASSEMBLY) 
    1. Disconnect the P25 combination meter assembly connector.
    2. Disconnect the z2 spiral cable with sensor 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
      P25-1 (MSSL) - P19-4 (EAU) Always Below 1 Ω
      P25-3 (MSTI) - P19-10 (+DP2) Always Below 1 Ω
      P25-2 (MSM+) - Body ground Always Below 1 Ω
      P25-2 (MSM+) - Other terminals and body ground Always 10 kΩ or higher
      P25-1 (MSSL) - 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 [01/2017 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR