FixVault
Home › Toyota › 2009 › Avalon XLS › Repair and Diagnosis › External Pages › Different car › Section 32 (Lighting) › Lighting System › Light Control Switch Circuit › Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE OF TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Combination Switch / Data List.
    5. Read the display on the Techstream.

      Combination Switch (Combination Switch ECU) 

      DATA LIST - COMBINATION SWITCH (COMBINATION SWITCH ECU)

      Tester Display Measurement Item/Range Normal Condition
      Front Fog Light Switch 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 Light Switch Passing light switch signal / ON or OFF ON: Headlight dimmer switch is in FLASH (PASS) position
      OFF: Headlight dimmer switch is not in FLASH (PASS) position
      Dimmer HI Switch High beam switch signal / ON or OFF ON: Headlight dimmer switch is in HI position
      OFF: Headlight dimmer switch is in LOW position
      Light Auto Switch 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 Switch 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 Switch Taillight switch signal / ON or OFF ON: Light control switch is in TAIL or HEAD position
      OFF: Light control switch is off
      Turn Left Switch Turn signal switch LH signal / ON or OFF ON: Turn signal switch is in LH position
      OFF: Turn signal switch is not in LH position
      Turn Right Switch Turn signal switch RH signal / ON or OFF ON: Turn signal switch is in RH position
      OFF: Turn signal switch is not in RH position

      OK: 

      Condition information can be displayed. 

    NG: Go to step 2 

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

  2. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY 
    1. Inspect headlight dimmer switch assembly (See INSPECTION  ).

      OK: 

      Headlight dimmer switch assembly is normal. 

    NG: REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY 

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

About FixVault