LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2010 >> SC 430 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio / Visual (W/O Navigation) (Diagnostics) >> AUDIO AND VISUAL SYSTEM (w/o Navigation System) >> Steering Pad Switch Circuit >> Procedure

Steering Pad Switch Circuit: Procedure

  1. READ VALUE USING TECHSTREAM (STEERING PAD SWITCH MODULATOR) 
    1. Check the DATA LIST for proper functioning of the steering pad switch.
      STEERING PAD SWITCH MODULATOR:

      Tester Display Test Part Control Range Diagnostic Note
      AV MODE SW Audio mode switch / ON or OFF ON: Audio mode switch is pushed
      OFF: Audio mode switch is not pushed
      -
      AV VOL UP SW Audio volume UP switch / ON or OFF ON: Audio volume UP switch is pushed
      OFF: Audio volume UP switch is not pushed
      -
      AV VOL DOWN SW Audio volume DOWN switch / ON or OFF ON: Audio volume DOWN switch is pushed
      OFF: Audio volume DOWN switch is not pushed
      -
      AV SEL UP SW Audio selector UP switch / ON or OFF ON: Audio selector UP switch is pushed
      OFF: Audio selector UP switch is not pushed
      -
      AV SEL DOWN SW Audio selector DOWN switch / ON or OFF ON: Audio selector DOWN switch is pushed
      OFF: Audio selector DOWN switch is not pushed
      -
      AV VOL SET SW Audio volume set switch / ON or OFF ON: Audio volume set switch is pushed
      OFF: Audio volume set switch is not pushed
      -

      OK

      ON appears on the screen when each steering pad switch is pushed.

    NG → See step   3 

    OK → See step   2 

  2. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE  
  3. REPLACE STEERING PAD SWITCH MODULATOR. Refer to  REMOVAL - Step 4