AFS (ADAPTIVE FRONT-LIGHTING SYSTEM) INITIALIZATION

Note


  • Initialize the AFS ECU (headlight swivel ECU assembly) when the AFS ECU (headlight swivel ECU assembly) is replaced.

  • Initialize the AFS ECU (headlight swivel ECU assembly) (set the zero point of the height control sensor in the AFS ECU (headlight swivel ECU assembly)) after the vehicle height changes due to replacement of suspension components or after performing operations such as removal and reinstallation or replacement of the rear height control sensor sub-assembly.

  • Adjust the headlight aim after initializing the AFS ECU (headlight swivel ECU assembly) Click here.

  • When a malfunction is detected in the AFS, height control sensor signal initialization is impossible. Perform troubleshooting before initialization.


  1. PREPARE VEHICLE FOR INITIALIZATION


    1. Unload the trunk and vehicle, ensuring that the spare tire, tools and jack are in their original positions.

    2. Check that there are no occupants in the vehicle.

    3. Turn off the headlights.

    4. Stop the vehicle on a level surface and keep the vehicle height unchanged.


      NEXT

  2. CHECK AFS OFF INDICATOR LIGHT


    1. Turn the ignition switch to ON, and check the indicator light.

      OK
      Condition Specified Condition
      The AFS ECU (headlight swivel ECU assembly) has been replaced with a new one. Indicator light repeatedly blinks 6 times at 2 Hz.
      Replacement of the rear height control sensor sub-assembly, removal and reinstallation of the rear height control sensor sub-assembly, replacement of the suspension, etc. have been performed. Indicator light comes on for approximately 3 seconds, and then goes off (bulb check function).

      Tech Tips

      If the indicator light does not come on when turning the ignition switch to ON, inspect and repair it according to Problem Symptoms Table Click here.


      NG

      GO TO PROBLEM SYMPTOMS TABLE
      OK

  3. INITIALIZATION


    1. A01ETL2E45

      Connect SST to terminals 4 (CG) and 8 (LVL) of the DLC3.

      SST
      09843-18040
    2. A01EU8FE01

      Turn the low beam headlights on and off using the light control switch within 20 seconds after connecting the terminals.

      Tech Tips

      The number of times the low beam headlights need to be turned on and off is determined by the present fuel level as shown below.

      Fuel Level Number of Times to Turn Low Beam Headlights On and Off
      Fuel level is within A range. 1
      Fuel level is within B range. 2
      Fuel level is within C range. 3
      Fuel level is within D range. 4
      Fuel level is within E range. 5

      Note


      • Turn the low beam headlights on and off at less than 3-second intervals.

      • Be sure to operate the light control switch from outside the vehicle.

    3. Check the indicator light.

      OK
      Condition Specified Condition
      The AFS ECU (headlight swivel ECU assembly) has been replaced with a new one. Blinks 6 times at 2 Hz → Repeatedly blinks N*1 times at 2 Hz.
      Replacement of the rear height control sensor sub-assembly, removal and reinstallation of the rear height control sensor sub-assembly, replacement of the suspension, etc. have been performed. Off → Repeatedly blinks N*1 times at 2 Hz.

      Tech Tips


      • *1: The number of times that the indicator blinks is determined by the number of times the low beam headlights are turned on and off.

      • If initialization does not finish normally, disconnect SST from the DLC3 and turn the ignition switch off. Then, restart initialization from step 1.


      NG

      GO TO PROBLEM SYMPTOMS TABLE
      OK
      TURN IGNITION SWITCH OFF (END)