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Home >> Lexus >> 2019 >> LC 500 >> Repair and Diagnosis >> External Pages >> Different car >> Section 228 (Pre-Collision System - Diagnostics - Introduction) >> Pre-Collision 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]

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  1. DESCRIPTION 
    1. When a pre-collision system DTC is stored, the driving support ECU assembly stores the current vehicle (ECU or sensor) 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 / Pre-Collision 2 / Trouble Codes.

      Body Electrical > Pre-Collision 2 > Trouble Codes 

    5. According to the Techstream display, select a DTC that stored freeze frame data.
    6. Read the freeze frame data recorded when the DTC was stored.

      Body Electrical > Pre-Collision 2 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Turn Light RH Turn signal switch (right) status ON or OFF ON: Turn signal switch (right) on
      OFF: Turn signal switch (right) off      		 -
      Turn Light LH Turn signal switch (left) status ON or OFF ON: Turn signal switch (left) on
      OFF: Turn signal switch (left) off      		 -
      PCS OFF Switch Pre-collision system on/off status ON or OFF ON: Pre-collision system on
      OFF: Pre-collision system off      		 -
      Pre-Collision Safety Warning Buz Pre-collision system warning buzzer Valid or Inval Valid: Pre-collision system warning buzzer operation possible
      Inval: Pre-collision system warning buzzer operation not possible      		 -
      Pre-Collision Brake Pre-collision braking function Valid or Inval Valid: Pre-collision braking operation possible
      Inval: Pre-collision braking operation not possible      		 -
      PBA Start Pre-collision brake assist activation signal OFF, Standby, Assist Lv1 or Assist Lv2 OFF: Pre-collision brake assist not operating
      Standby: Brake pedal not depressed during pre-collision brake assist operation
      Assist Lv1: Brake pedal depressed during pre-collision brake assist operation
      Assist Lv2: Brake pedal firmly depressed during pre-collision brake assist operation      		 Signal status changes when the pre-collision brake assist is activated before a crash (Pre-collision brake will activate only in situations where the driver depresses the brake pedal)
      Warning Brake - - - Not applicable to the vehicle
      Brake Assist Standby - - - This item is displayed on the Techstream but is not used.
      Pre-Collision Brake Control Pre-collision braking operational status ON or OFF ON: Pre-collision braking operating
      OFF: Pre-collision braking not operating      		 -
      AVS Start AVS control activation status ON or OFF ON: AVS control activated
      OFF: AVS control not activated      		 -
      VGRS Start - - - Not applicable to the vehicle
      PBA Control Pre-collision brake assist operational status Valid or Invalid Valid: Pre-collision brake assist control operation possible
      Invalid: Pre-collision brake assist control operation not possible      		 -
      Pre-Collision Safety Brake Ind Pre-collision system alarm warning message status ON or OFF ON: Displayed
      OFF: Not displayed      		 "BRAKE!" is displayed
      PCS Crash Alarm Buzzer Skid control buzzer status ON or OFF ON: Skid control buzzer sounding
      OFF: Skid control buzzer not sounding      		 -
      Front Radar-Low Voltage History Millimeter wave radar sensor assembly low voltage history ON or OFF ON: History of low voltage
      OFF: No history of low voltage      		 -
      Front Radar-Incorrect Axial Gap (Vertical) History Millimeter wave radar sensor assembly vertical misalignment history ON or OFF ON: History of vertical misalignment
      OFF: No history of vertical misalignment      		 -
      Front Radar-Incorrect Axial Gap (Horizontal) History Millimeter wave radar sensor assembly horizontal misalignment history ON or OFF ON: History of horizontal misalignment
      OFF: No history of horizontal misalignment      		 -
      Front Recognition Camera-Malfunction History Forward recognition camera system unavailable history ON or OFF ON: History of unavailable
      OFF: No history of unavailable      		 -
      Control Mode ECU control mode status Normal or Check Normal: Normal operation
      Check: Operating in Control Mode      		 -
      PCS Operation State Retention Setting PCS Operation State Retention Setting customize setting ON or OFF ON: Customize setting set to ON
      OFF: Customize setting set to OFF      		 -
      PCS Alarm Activation Distance Retention Setting 1 PCS Alarm Activation Distance Retention Setting 1 customize setting ON or OFF ON: Customize setting set to ON
      OFF: Customize setting set to OFF      		 -
      PCS Alarm Activation Distance Retention Setting 2 PCS Alarm Activation Distance Retention Setting 2 customize setting ON or OFF ON: Customize setting set to ON
      OFF: Customize setting set to OFF      		 -
      PCS Alarm Activation Distance Retention Setting 3 PCS Alarm Activation Distance Retention Setting 3 customize setting ON or OFF ON: Customize setting set to ON
      OFF: Customize setting set to OFF      		 -
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