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Steering Pad Switch: Inspection

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT STEERING PAD SWITCH (w/ Navigation System) 
    1. Disconnect the steering pad switch assembly connector.
      Fig 1: Identifying Steering Pad Switch Assembly Connectors (W/ Navigation System)
      G05753496Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below

      Standard Resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      10 (AU1) - 8 (EAU) No switch is pushed 95 to 105 kΩ
      10 (AU1) - 8 (EAU) Seek+ switch- pushed Below 2.5 Ω
      10 (AU1) - 8 (EAU) Seek- switch, pushed 313.5 to 346.5 Ω
      10 (AU1) - 8 (EAU) Volume+ switch: pushed 959.5 to 1060.5 Ω
      10 (AU1) - 8 (EAU) Volume- switch: pushed 3049 5 to 3370.5 Ω
      9 (AU2) - 8 (EAU) No switch is pushed 95 to 105 kΩ
      9 (AU2) - 8 (EAU) MODE switch: pushed Below 2.5 Ω
      9 (AU2) - 8 (EAU) Voice switch: pushed 3049.5 to 3370 5 Ω
      9 (AU2) - 8 (EAU) On Hook switch: pushed 313.5 to 346.5 Ω
      9 (AU2) - 8 (EAU) Off Hook switch, pushed 959.5 to 1060.5 Ω
      7 (DISP) - 8 (EAU) DISP switch: pushed Below 2.5 Ω
      7 (DISP) - 8 (EAU) No switch is pushed 10 kΩ or higher
      4 (DIST) - 6 (ECC)(1) Distance switch, pushed Below 2.5 Ω
      4 (DIST) - 6 (ECC)(1) No switch is pushed 10 kΩ or higher
      (1) w/ Dynamic Radar Cruise Control System

      If the result is not as specified, replace the steering pad switch

  2. INSPECT STEERING PAD SWITCH (w/o Navigation System) 
    1. Disconnect the steering pad switch assembly connector.
      Fig 2: Identifying Steering Pad Switch Assembly Connectors (W/O Navigation System)
      G05753497Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      10 (AU1) - 8 (EAU) No switch is pushed 95 to 105 kΩ
      10 (AU1) - S (EAU) Seek+ switch: pushed Below 2.5 Ω
      10 (AU1) - 8 (EAU) Seek- switch: pushed 313.5 to 346.5 Ω
      10 (AU1) - 8 (EAU) Volume+ switch: pushed 959.5 to 1060.5 Ω
      10 (AU1) - 8 (EAU) Volume- switch: pushed 3049.5 to 3370.5 Ω
      9 (AU2) - 8 (EAU) No switch is pushed 95 to 105 kΩ
      9 (AU2) - 8 (EAU) MODE switch: pushed Below 2.5 Ω
      7 (DISP) - 8 (EAU) DISP switch: pushed Below 2.5 Ω
      7 (DISP) - 8 (EAU) No switch is pushed 10 kΩ or higher
      4 (DIST) - 6 (ECC)(1) Distance switch: pushed Below 2.5 Ω
      4 (DIST) - 6 (ECC)(1) No switch is pushed 10 kΩ or higher
      (1) w/ Dynamic Radar Cruise Control System

      If the result is not as specified, replace the steering pad switch.

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