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Home >> Lexus >> 2015 >> IS 250 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Automatic Headlight Beam Level Control System - Diagnostics - Introduction >> Automatic Headlight Beam Level Control System >> Freeze Frame Data [10/2016 - 09/2020] >> Freeze Frame Data [10/2016 - 09/2020]
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Freeze Frame Data [10/2016 - 09/2020]

  1. FREEZE FRAME DATA 
    1. Whenever an automatic headlight beam level control system DTC is stored, the No. 1 headlight ECU sub-assembly LH stores the current vehicle state as freeze frame data.
  2. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.
    5. Select a DTC to display its freeze frame data.

      Body Electrical > HL AutoLeveling 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      +B No. 1 Headlight ECU sub-assembly LH IG power supply voltage value 0.00 to 19.75 V 11.00 to 14.00 V -
      Height Sens Pw Supply Val Rear height control sensor sub-assembly LH power supply value 0.00 to 5.00 V 4.61 to 5.00 V -
      Rr Height Sens Signal Val Rear height control sensor sub-assembly LH signal value 0.00 to 5.00 V 0.50 to 4.50 V Value changes according to vehicle height.
      +B Voltage Value No. 1 Headlight ECU sub-assembly LH +B power supply voltage value 0.00 to 19.75 V 11.00 to 14.00 V -
      Headlight Low Beam State Low beam headlight state OFF or ON OFF: Low beam headlights off
      ON: Low beam headlights on      		 -
      Headlight High Beam State High beam headlight state OFF or ON OFF: High beam headlights off
      ON: High beam headlights on      		 -
      DRL Operating State Daytime running light state OFF or ON OFF: Daytime running lights off
      ON: Daytime running lights on      		 -
      Steering Sensor Signal Steering sensor signal value -384.0 to 382.5 deg Condition can be displayed -
      Front Right Wheel Speed Value Front right wheel speed 0.00 to 260.00 km/h (162.00 mph) Condition can be displayed -
      Front Left Wheel Speed Value Front left wheel speed 0.00 to 260.00 km/h (162.00 mph) Condition can be displayed -
      Vehicle Acceleration Vehicle acceleration -445.64 to 445.63 m/s2 Condition can be displayed -
      Clearance Light State Parking light state OFF or ON OFF: Parking lights off
      ON: Parking lights on      		 -
      Right Cornering Light State Cornering light RH state OFF or ON OFF: Cornering light RH off
      ON: Cornering light RH on      		 Although this item is displayed on the Techstream, it is not applicable to this vehicle.
      Left Cornering Light State Cornering light LH state OFF or ON OFF: Cornering light LH off
      ON: Cornering light LH on      		 Although this item is displayed on the Techstream, it is not applicable to this vehicle.
      Number Of Trouble Codes Number of trouble codes 0 to 255 Number of stored DTCs displayed -
  3. CLEAR FREEZE FRAME DATA 
    NOTE:

    Clearing the DTCs will also clear the freeze frame data.

    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Clear the DTCs and freeze frame data.

      Refer to DTC CHECK / CLEAR [04/2013 - 09/2020] 

      Body Electrical > HL AutoLeveling > Clear DTCs 

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