LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2021 >> RC F Base >> Repair and Diagnosis >> Steering >> Steering Column >> Steering Column - Service Information >> Steering Pad Switch >> Inspection [11/2017 - ] >> Procedure

Inspection [11/2017 - ]: Procedure

  1. INSPECT STEERING PAD SWITCH ASSEMBLY 
    1. Measure the resistance according to the value(s) in the table below.
      GTY809269Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Steering Pad Switch Assembly)      		 *b Seek+
      *c Seek- *d Volume+
      *e Volume- *f MODE
      *g Off Hook *h On Hook
      *i Voice *j Up
      *k Down *l Left
      *m Right *n Enter
      *o Back *p Top
      *q Lane Departure Alert *r Distance Control
      *s Terminal-A - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      z4-2 (+DP) - z4-8 (EAU) No switch pushed 95 to 105 kΩ
      Enter switch pushed Below 2.5 Ω
      Top switch pushed 313 to 345 Ω
      Back switch pushed 950 to 1050 Ω
      z4-3 (+DP2) - z4-8 (EAU) No switch pushed 95 to 105 kΩ
      Left switch pushed Below 2.5 Ω
      Up switch pushed 313 to 345 Ω
      Down switch pushed 950 to 1050 Ω
      Right switch pushed 2955 to 3265 Ω
      z4-4 (DIST) - z4-7 (ECC) No switch pushed 1 MΩ or higher
      Distance control switch pushed Below 2.5 Ω
      Lane departure alert system 228 to 252 Ω
      z4-10 (AU2) - z4-8 (EAU) No switch pushed 95 to 105 kΩ
      MODE switch pushed Below 2.5 Ω
      On hook switch pushed 313 to 345 Ω
      Off hook switch pushed 950 to 1050 Ω
      Voice switch pushed 2955 to 3265 Ω
      z4-11 (AU1) - z4-8 (EAU) No switch pushed 95 to 105 kΩ
      Seek+ switch pushed Below 2.5 Ω
      Seek- switch pushed 313 to 345 Ω
      Volume+ switch pushed 950 to 1050 Ω
      Volume- switch pushed 2955 to 3265 Ω
      z4-6 (HO) - Terminal-A Always Below 2.5 Ω
      z4-7 (ECC) - z16-1 (ECC) Always Below 2.5 Ω
      z4-12 (CCS) - z16-3 (CCS) Always Below 2.5 Ω

      HINT: 

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

    2. Check the illumination.
      GTY800145Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Steering Pad Switch Assembly)      		 - -
      1. Connect a positive (+) lead from the battery terminal z4-5 (IL+2) and a negative (-) lead to terminal z4-8 (EAU) of the steering pad switch assembly connector.
      2. Check that the steering pad switch assembly illumination illuminates.

        OK

        The steering pad switch assembly illumination illuminates.

        HINT: 

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

scientia non olet · About LEMON Manuals