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Home >> Lexus >> 2017 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (W/ Automatic Headlight Beam Level Control System) (Diagnostics - Introduction) (2 Of 2) >> LIGHTING SYSTEM (w/ Automatic Headlight Beam Level Control System) >> Freeze Frame Data [08/2019 - ] >> Freeze Frame Data [08/2019 - ]
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Freeze Frame Data [08/2019 - ]

  1. FREEZE FRAME DATA 
    1. Whenever a lighting system DTC is stored, the No. 1 headlight ECU sub-assembly and forward recognition camera stores the current vehicle state as freeze frame data.
  2. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus:
      1. Body Electrical / AFS / Trouble Codes. (for Multiple Beam Headlight)

        Body Electrical > AFS > Trouble Codes 

      2. Body Electrical / HL AutoLeveling / Trouble Codes. (for Single Beam Headlight)

        Body Electrical > HL AutoLeveling > Trouble Codes 

      3. Body Electrical / Front Recognition Camera (Front Lighting Control) / Trouble Codes. (w/ Automatic High Beam System)

        Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes 

    5. Select a DTC to display its freeze frame data.

      Body Electrical > AFS 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Traveling Direction Traveling direction Not Fwd or Fwd Not Fwd: Shift lever in R or N
      Fwd: Shift lever not in R or N      		 -
      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 State Daytime running light state OFF or ON OFF: Daytime running lights off
      ON: Daytime running lights on      		 -
      Clearance Light State Parking light state OFF or ON OFF: Parking lights off
      ON: Parking lights on      		 -
      Right Cornering Light/Front Side Illuminate Light State Cornering light RH/front side illuminate light RH state OFF or ON OFF: Cornering light RH/front side illuminate light RH off
      ON: Cornering light RH/front side illuminate light RH on      		 w/ Front Fog Light
      Left Cornering Light/Front Side Illuminate Light State Cornering light LH/front side illuminate light LH state OFF or ON OFF: Cornering light LH/front side illuminate light LH off
      ON: Cornering light LH/front side illuminate light LH on      		 w/ Front Fog Light
      Daylight Operating State Daytime running light state OFF or ON OFF: Daytime running lights off
      ON: Daytime running lights on      		 -
      Engine Ready signal Stop or Run Stop: Power switch not on (READY)
      Run: Power switch on (READY)      		 -
      Steering Sens Signal Steering sensor signal value -384.0 to 382.5 deg Changes according to the operation of the steering wheel Turning left: Increases
      Turning right: Decreases
      FR Wheel Speed Front right wheel speed 0.00 to 327.67 km/h (203.60 mph) Condition can be displayed -
      FL Wheel Speed Front left wheel speed 0.00 to 327.67 km/h (203.60 mph) Condition can be displayed -
      Vehicle Acceleration Vehicle acceleration -445.64 to 445.60 m/s2 Condition can be displayed When accelerating: Value is positive.
      When decelerating: Value is negative.
      Swivel Motor Slave Status of the headlight swivel motor slave Normal or Abnoml Normal: Headlight swivel motor is normal
      Abnoml: Headlight swivel motor is not normal      		 If operation is abnormal, there may be a LIN communication error
      Swivel Motor Over-Run Status of the headlight swivel motor over-run Normal or Abnoml Normal: Headlight swivel motor is normal
      Abnoml: Headlight swivel motor is not normal      		 If operation is abnormal, there may be a LIN communication error
      Leveling Motor Slave Status of the headlight leveling motor slave Normal or Abnoml Normal: Headlight leveling motor is normal
      Abnoml: Headlight leveling motor is not normal      		 If operation is abnormal, there may be a LIN communication error
      Leveling Motor Over-Run Status of the headlight leveling motor over-run Normal or Abnoml Normal: Headlight leveling motor is normal
      Abnoml: Headlight leveling motor is not normal      		 If operation is abnormal, there may be a LIN communication error
      +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 -
      +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 -
      Number Of Trouble Codes Number of trouble codes 0 to 255 Number of stored DTCs displayed -

      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 RH 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 RH 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      		 -
      Daylight 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 Changes according to the operation of the steering wheel Turning left: Increases
      Turning right: Decreases
      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 When accelerating: Value is positive.
      When decelerating: Value is negative.
      Clearance Light State Parking light state OFF or ON OFF: Parking lights off
      ON: Parking lights on      		 -
      Right Cornering Light/Front Side Illuminate Light State Cornering light RH/front side illuminate light RH state OFF or ON OFF: Cornering light RH/front side illuminate light RH off
      ON: Cornering light RH/front side illuminate light RH on      		 w/ Front Fog Light
      Left Cornering Light/Front Side Illuminate Light State Cornering light LH/front side illuminate light LH state OFF or ON OFF: Cornering light LH/front side illuminate light LH off
      ON: Cornering light LH/front side illuminate light LH on      		 w/ Front Fog Light
      Number Of Trouble Codes Number of trouble codes 0 to 255 Number of stored DTCs displayed -

      Body Electrical > Front Recognition Camera (Front Lighting Control) 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Total Distance Traveled Actual driven distance 0 to 16777215 Roughly the same as the actual driven distance -
      Total Distance Traveled - Unit Actual driven distance unit km or mile Displays the current actual driven distance unit -
      AHB/AHS Information Automatic high beam system or adaptive high beam system specification information Unknown, AHB or AHS Unknown: Specification not stored
      AHB: w/ Automatic High Beam System
      AHS: w/ Adaptive High Beam System      		 -
  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 power switch on (IG).
    3. Clear the DTCs and freeze frame data.
    4. Enter the following menus:
      1. Body Electrical / AFS / Clear DTCs. (for Multiple Beam Headlight)

        Body Electrical > AFS > Clear DTCs 

      2. Body Electrical / HL AutoLeveling / Clear DTCs. (for Single Beam Headlight)

        Body Electrical > HL AutoLeveling > Clear DTCs 

      3. Body Electrical / Front Recognition Camera (Front Lighting Control) / Clear DTCs. (w/ Automatic High Beam System)

        Body Electrical > Front Recognition Camera (Front Lighting Control) > Clear DTCs 

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