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Home >> Lexus >> 2016 >> RC 350 Base, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Vehicle Stability Control System - Diagnostics - Introduction (2 Of 3) >> Vehicle Stability Control System >> Freeze Frame Data [11/2017 - 09/2020] >> Freeze Frame Data [11/2017 - 09/2020]
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Freeze Frame Data [11/2017 - 09/2020]

  1. FREEZE FRAME DATA 
    1. Using the Techstream, check the vehicle condition (ECU, sensor) when the brake system operates or a DTC is output.
  2. CHECK FREEZE FRAME DATA WHEN BRAKE SYSTEM OPERATES 
    1. Freeze frame data is stored when the brake system operates. The freeze frame data is updated each time the system operates.
    2. Once freeze frame data is stored when the system operates, it is not cleared until the DTC is cleared.
    3. The number of times (maximum: 31) the engine switch has been turned from off to on (IG) since the last time the system was activated can be stored and displayed.

      HINT: 

      • After the engine switch is turned from off to on (IG), the counter does not increase if the vehicle remains below 7 km/h (4.3 mph).
      • The value "31" is displayed when the engine switch was turned on (IG) more than 31 times.
    4. Check freeze frame data when the system operates
      1. Turn the engine switch off.
      2. Connect the Techstream to the DLC3 and turn the engine switch on (IG).
      3. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility.
      4. Select "ABS History".

        Chassis > ABS/VSC/TRAC > Utility 

        Tester Display
        ABS History
      5. Check the freeze frame data when the system operates.
  3. CHECK FREEZE FRAME DATA WHEN DTC WAS STORED 
    1. Freeze frame data is stored when a DTC is output.
    2. Once freeze frame data is stored when a DTC is output, it is not updated or cleared until the DTC is cleared.
    3. The number of times (maximum: 31) the engine switch has been turned from off to on (IG) since a DTC was output can be stored and displayed.

      HINT: 

      The value "31" is displayed when the engine switch was turned on (IG) more than 31 times.

    4. Check freeze frame data when DTC is output
      1. Turn the engine switch off.
      2. Connect the Techstream to the DLC3 and turn the engine switch on (IG).
      3. Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.

        Chassis > ABS/VSC/TRAC > Trouble Codes 

    5. Select a DTC to display the freeze frame data.
    6. Check the freeze frame data for the output DTC.

      Chassis > ABS/VSC/TRAC 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FR Speed Open Front speed sensor RH open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      FL Speed Open Front speed sensor LH open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      RR Speed Open Rear speed sensor RH open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      RL Speed Open Rear speed sensor LH open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      EFI Communication Open ECM communication open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      Yaw Rate Open Yaw rate sensor open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      Deceleration Open Acceleration sensor open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      Steering Open Steering angle sensor open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      Master Cylinder Open Master cylinder pressure sensor open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      FR Speed Sensor Voltage Open Front speed sensor RH voltage open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      FL Speed Sensor Voltage Open Front speed sensor LH voltage open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      RR Speed Sensor Voltage Open Rear speed sensor RH voltage open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      RL Speed Sensor Voltage Open Rear speed sensor LH voltage open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      M/C Pressure Sensor Noise Master cylinder pressure sensor noise detection Error or Normal Error: Malfunction
      Normal: Normal      		 -
      Brake Pedal Switch Open Brake pedal load sensing switch open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      Yaw Rate Sensor Voltage Open Yaw rate sensor voltage open detection Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      EFI Communication Invalid ECM communication invalid detection Error or Normal Error: Invalid
      Normal: Normal      		 -
      Number of IG ON Number of times engine switch turned on (IG) after Freeze Frame Data stored 0 to 31 - -
      Elapsed Time Time elapsed after engine switch turned on (IG) Min.: 0 sec, Max.: 100661 sec - -
      Stop Light SW Stop light switch assembly ON or OFF ON: Brake pedal depressed
      OFF: Brake pedal released      		 -
      Parking Brake SW Parking brake switch assembly ON or OFF ON: Parking brake applied
      OFF: Parking brake released      		 -
      Gear Position Gear Position information P, N, R, 1st-10th, Fail or Not R Actual gear position -
      Shift Lever Position Shift lever position information Fail, 1st-5th, 6th/B, D/M, "P, N" or R Actual shift lever position -
      Operated System Operated system status ABS, VSC, TRAC, BA, HAB, PBA, PB, HA-CTRL, TSC, SCB, Fail, Sys or Non Actual operated system ABS: ABS activated
      VSC: VSC activated
      TRAC: TRAC activated
      BA: BA activated
      HAB: High power assist brake activated
      PBA: PBA activated
      PB: PB activated
      HA-CTRL: Hill-start assist control activated
      TSC: Trailer Sway Control activated*
      SCB: Secondary collision brake is activated*
      Fail: Fail safe mode activated
      Sys: System prohibit activated
      Non: No operation activated
      HINT: 
      *: Not supported
      M/C Sensor Grade Master cylinder pressure sensor change Min.: -30 Mpa/s, Max.: 225 Mpa/s Brake pedal released or pedal held at constant position: 0 Mpa/s When brake pedal is being operated: Changes in proportion with pedal movement speed
      Yaw Rate Sensor Yaw rate sensor Min.: -128°/s, Max.: 127°/s Vehicle stopped: 0°/s
      Turning right: -128 to 0°/s
      Turning left: 0 to 127°/s      		 -
      Lateral G Lateral G Min.: -25.10 m/s2 , Max.: 24.90 m/s2 - During turning: Changes in proportion with lateral acceleration
      Forward and Rearward G Forward and backward G Min.: -25.10 m/s2 , Max.: 24.90 m/s2 - During acceleration/deceleration: Changes in proportion with acceleration
      FR Wheel Speed Front wheel speed sensor RH reading Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      FL Wheel Speed Front wheel speed sensor LH reading Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      RR Wheel Speed Rear wheel speed sensor RH reading Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      RL Wheel Speed Rear wheel speed sensor LH reading Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      Vehicle Speed Maximum wheel speed sensor reading Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      Vehicle Speed Grade Vehicle acceleration Min.: -25.10 m/s2 , Max.: 24.90 m/s2 Vehicle stopped: 0.00 m/s2 During driving: Changes in proportion with vehicle acceleration/deceleration
      Accelerator Opening Angle % Percentage of accelerator pedal opening angle Min.: 0.0%, Max.: 127.5% Accelerator pedal released: 0.0% During accelerator pedal operation: Changes in proportion with the pedal movement
      IG1 Voltage Value IG1 voltage value Min.: 0.00 V, Max.: 20.00 V Engine switch on (IG): 11 to 14 V Changes in proportion to battery voltage
      BS1 Voltage Value +BS voltage value Min.: 0.00 V, Max.: 20.00 V Engine switch on (IG): 11 to 14 V Changes in proportion to battery voltage
      FR Target Oil Pressure The value of the target oil pressure applied to the front brake RH Min.: 0.00 Mpa, Max.: 20.00 Mpa - Operating the brake pedal: Varies depending on the target oil pressure
      FL Target Oil Pressure The value of the target oil pressure applied to the front brake LH Min.: 0.00 Mpa, Max.: 20.00 Mpa - Operating the brake pedal: Varies depending on the target oil pressure
      RR Target Oil Pressure The value of the target oil pressure applied to the rear brake RH Min.: 0.00 Mpa, Max.: 20.00 Mpa - Operating the brake pedal: Varies depending on the target oil pressure
      RL Target Oil Pressure The value of the target oil pressure applied to the rear brake LH Min.: 0.00 Mpa, Max.: 20.00 Mpa - Operating the brake pedal: Varies depending on the target oil pressure
      Brake Pedal Load Sensing SW Brake pedal load sensing switch ON or OFF ON: Brake pedal depressed
      OFF: Brake pedal released      		 -
      Inspection Mode Inspection mode Other or Inspect Other: Normal mode
      Inspect: Inspection mode      		 -
      Steering Angle Sensor Steering angle sensor Min.: -3276.8°, Max.: 3276.7° Turning left: Increases
      Turning right: Decreases      		 -
      TRAC/VSC Off Mode TRAC/VSC off mode Normal, TRC OFF, VSC Expert Mode or VSC OFF Normal: Normal mode
      TRC OFF: TRAC off mode
      VSC Expert Mode: VSC expert mode
      VSC OFF: VSC off mode      		 -
      Power Train Driving force Power train driving force that is currently occurring Min.: -327680 N, Max.: 327670 N - -
      Master Cylinder Pressure Master cylinder pressure sensor pressure Min.: 0.00 Mpa, Max.: 24.48 Mpa Brake pedal depressed: Proportional to pedal force
      Brake pedal released: 0.00 to 1.76 Mpa      		 -
      Master Cylinder Sensor Temperature Master cylinder pressure sensor temperature Min.: -80°C (-112°F), Max.: 175°C (347°F) - Displays current master cylinder temperature
      Vehicle Stop Time from IG ON Time vehicle stopped after engine switch turned on (IG) Min.: 0 s, Max.: 1275 s - -
      Travel Distance from IG ON Driving time after engine switch turned on (IG) Min.: 0 s, Max.: 1275 s - -
      Engine Revolutions Engine speed Min.: 0 rpm, Max.: 25500 rpm - -
      Motor Power Supply Voltage Motor power supply voltage Min.: 0.00 V, Max.: 20.00 V Engine switch on (IG): 11 to 14 V Changes in proportion to battery voltage
      Solenoid Power Supply Voltage Solenoid power supply voltage Min.: 0.00 V, Max.: 20.00 V Engine switch on (IG): 11 to 14 V Changes in proportion to battery voltage
      MT Voltage Value Motor voltage value Min.: 0.00 V, Max.: 20.00 V - Changes in proportion to battery voltage
      Stop Light Relay State for ECU Control Stop light control relay (semiconductor PWR integration ECU) status (for ECU control) ON or OFF ON: Stop light control relay (semiconductor PWR integration ECU) on (Stop light on)
      OFF: Stop light control relay (semiconductor PWR integration ECU) off (Stop light off)      		 -
      Engine Stop by Stop and Start System Engine stopped by stop and start system status ON or OFF ON: Engine stopped by stop and start control
      OFF: Engine not stopped by stop and start control      		 Not applicable to this vehicle
      Solenoid State for ECU Control Solenoid (for ECU control) status ON or OFF ON: ABS solenoid relay operating
      OFF: ABS solenoid relay not operating      		 -
      Motor State for ECU Control Motor (for ECU control) status ON or OFF ON: ABS motor relay operating
      OFF: ABS motor relay not operating      		 -
      Operation History of IG OFF while Vehicle is moving History of engine switch turned off when vehicle is in motion ON or OFF ON: History of engine switch turned off with vehicle speed 3 km/h (2 mph) or higher
      OFF: No history      		 -
      Master Cylinder Pressure Sensor Power Supply Open Master cylinder pressure sensor power supply voltage status Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      Solenoid Power Supply Open Solenoid power supply voltage status Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      Motor Power Supply Open Motor power supply voltage status Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      Stop Switch Open Momentary interruption (open circuit) status in the wire harness between the skid control ECU (brake actuator assembly) and the stop light switch assembly Error or Normal Error: Momentary interruption
      Normal: Normal      		 -
      IG Switch Engine switch on (IG) status ON or OFF - -
      Elapsed Time after Freeze Trigger Elapsed time after storing freeze frame data Min.: 0 msec, Max.: 1020 msec - -
  4. CLEAR FREEZE FRAME DATA 
    NOTE:

    Clearing the DTCs will also clear the Freeze Frame Data.

    1. Turn the engine switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the engine switch on (IG).
    4. Clear the DTCs and Freeze Frame Data.

      Refer to DTC CHECK / CLEAR [11/2017 - 09/2020] 

      Chassis > ABS/VSC/TRAC > Clear DTCs 

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