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Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
  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