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Home >> Lexus >> 2023 >> LX 600 Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes & Symptom Tests >> Meter / Gauge System >> Steering Pad Switch Circuit [12/2021 - ] >> Procedure

Steering Pad Switch Circuit [12/2021 - ]: Procedure

  1. INSPECT STEERING PAD SWITCH ASSEMBLY 

    Refer to INSPECTION [12/2021 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [12/2021 - ] 

    Result: 

    OK 

    See step  2

  2. INSPECT SPIRAL CABLE SUB-ASSEMBLY 

    Refer to INSPECTION [12/2021 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  REMOVAL [12/2021 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY) 
    1. Disconnect the I5 combination meter assembly connector.
    2. Disconnect the I47 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
      I5-15 (MSM+) - I47-11 (+DP) Always Below 1 Ω
      I5-31 (MSTI) - I47-10 (+DP2) Always Below 1 Ω
      I5-15 (MSM+) - Other terminals and body ground Always 10 kΩ or higher
      I5-31 (MSTI) - Other terminals and body ground Always 10 kΩ or higher
      I47-4 (EAU) - Body ground Always Below 1 Ω

      Result

      Result Proceed to
      OK A
      NG (Spiral cable sub-assembly - combination meter assembly) B
      NG (Spiral cable sub-assembly - body ground) C

    Result: 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [12/2021 - ] 

    Result: 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY AND BODY GROUND) 
    1. Disconnect the I196 multi-media module receiver assembly connector.
    2. Disconnect the I47 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
      I196-20 (SWG) - I47-4 (EAU) Always Below 1 Ω
      I196-1 (GND1) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY. Refer to  REMOVAL [12/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR