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Home >> Lexus >> 2007 >> SC 430 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting >> Lighting System >> Light Control Switch Circuit >> Inspection Procedure

Inspection Procedure

  1. READ VALUE OF INTELLIGENT TESTER (COMBINATION SWITCH) 
    1. Check the DATA LIST for proper functioning of the combination switch.

      Turn signal switch 

      DATA LIST - TURN SIGNAL SWITCH

      Item Measurement Item / Display (Range) Normal Condition Diagnostic Note
      F FOG LIGHT SW Front fog light switch signal / ON or OFF ON: Front fog light switch is in ON position
      OFF: Front fog light switch is not in ON position
      -
      PASSING SW Passing light switch signal / ON or OFF ON: Headlight dimmer switch is in FLASH position
      OFF: Headlight simmer switch is not in FLASH position
      -
      DIMMER HI SW High beam switch signal / ON or OFF ON: Headlight dimmer switch is in HI position
      OFF: Headlight dimmer switch is not in HI position
      -
      LIGHT AUTO SW Auto light switch signal / ON or OFF ON: Light control switch is in AUTO position
      OFF: Light control switch is not in AUTO position
      -
      HEAD LIGHT SW Headlight control switch signal / ON or OFF ON: Light control switch is in HEAD position
      OFF: Light control switch is not in HEAD position
      -
      TAIL LIGHT SW Taillight switch signal / ON or OFF ON: Light control switch is in TAIL or HEAD position
      OFF: Light control switch is not in TAIL or HEAD position
      -
      TURN LEFT SW Turn signal switch LH signal / ON or OFF ON: Light control switch is in LH position
      OFF: Light control switch is not in LH position
      -
      TURN RIGHT SW Turn signal switch RH signal / ON or OFF ON: Light control switch is in RH position
      OFF: Light control switch is not in RH position
      -

      OK: ON (switch normal position) appears on the screen. 

    NG: REPLACE TURN SIGNAL SWITCH ASSEMBLY 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE