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Home >> Lexus >> 2016 >> GX 460 Base >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System (Diagnostics - Introduction) >> Pre-Collision System >> Freeze Frame Data [08/2019 - ] >> Freeze Frame Data [08/2019 - ]

Freeze Frame Data [08/2019 - ]

  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.
    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.
      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
      -
      PCS Indicator "Pre-Collision System Malfunction Visit Your Dealer" display request signal ON or OFF ON: "Pre-Collision System Malfunction Visit Your Dealer" display requested
      OFF: "Pre-Collision System Malfunction Visit Your Dealer" display not requested
      -
      PCS Disabled Indicator "Pre-Collision System Unavailable" display request signal ON or OFF ON: "Pre-Collision System Unavailable" display requested
      OFF: "Pre-Collision System Unavailable" display not requested
      -
      Pre-Collision Safety Warning Buz Skid control buzzer status Valid or Inval Valid: Skid control buzzer operation possible
      Inval: Skid control 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 start ON or OFF ON: AVS control activated
      OFF: AVS control not activated
      -
      VGRS Start - - - This item is displayed on the Techstream but is not used.
      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 Collision Alarm Buzzer Skid control buzzer control 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
      "ON" if the millimeter wave radar sensor assembly has been in the following condition in the past
      • Voltage is approximately 10 V or less or approximately 16 V or higher

      HINT: 
      After turning the power switch on (IG) and starting the engine after waiting at least 1 second, this item may change to "ON"
      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
      "ON" if the forward recognition camera has been in one of the following conditions in the past
      • When the ambient temperature is approximately -30°C or less
      • When the ambient temperature is approximately 85°C or higher
      • When the input voltage is approximately 8 V or less
      • When the input voltage is approximately 16 V or higher
      • When the forward recognition camera temporarily stops recognition
      Control Mode ECU control mode status Normal or Check Mode 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
      -