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Lighting System: Initialization

WARNING: This page is about a different car, the 2009 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
  1. HEADLIGHT BEAM LEVEL CONTROL ECU INITIALIZATION 
    NOTE:
    • Initialize the headlight beam level control ECU when: vehicle height changes by such means as removal, installation, and replacement of the height control sensor, replacement of the suspension, or replacement of the headlight beam level control ECU assembly.
    • Adjust the headlight aim after initializing the headlight beam level control ECU (see ADJUSTMENT ).
  1. CHECK VEHICLE CONDITION 
    1. Leave approximately 10 liters of fuel in the tank (fuel indicator shows approximately 2 segments).
    2. Unload the vehicle.
    3. Check that there is no passenger in the vehicle.
    4. Turn off the headlights.
  2. CHECK WARNING INDICATOR 
    1. Turn the power switch ON (IG) and check if the warning indication appears.

      Standard: Master warning in the meter blinks and "AUTO LEVELING WARNING" appears. 

      HINT:

      Warning indication appears only when replacing with a new headlight beam level control ECU. Go to "OK" for removal / installation of the headlight beam level control ECU, replacement / removal / installation of the height control sensor, or replacement of the suspension.

    NG : CHECK HEADLIGHT BEAM LEVEL CONTROL ECU, WIRE HARNESS, AND CONNECTOR 

    OK : GO TO NEXT STEP 

  3. INITIALIZATION 
    1. Connect terminals 4 (CG) and 8 (OP3) of the DLC3 using the SST.
    2. Flash the headlight more than 3 times within 20 seconds using the headlight dimmer switch. Check if the warning indication appears (step A).
      NOTE: Flash the headlight at an interval of 1 second
      Fig 1: Identifying DLC3 Connector Terminals
      G04475771Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK 

      WARNING INDICATOR INSPECTION

      Action Warning indication
      headlight beam level control ECU replacement (new) Appears --> Disappears (initialization complete)
      headlight beam level control ECU removal / installation, height control sensor replacement / removal / installation, or suspension replacement Does not appear --> Appears (initialization complete) --> Disappears

    NG : RETURN TO "CHECK WARNING INDICATOR" IF INITIALIZATION DOES NOT SUCCEED AFTER REPEATING STEP "A" MORE THAN 20 TIMES 

    OK : INITIALIZATION COMPLETE 

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