VEHICLE STABILITY CONTROL SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA


    1. Whenever an ABS DTC is detected, the skid control ECU stores the current vehicle (sensor) state as Freeze Frame Data.

    2. The skid control ECU stores the number of times (maximum: 31) the engine switch has been turned from off to on (IG) since the last time the ABS was activated.

      Tech Tips


      • If the vehicle is stopped or at a low speed (7 km/h (4.3 mph) or less), or if a DTC is detected, the skid control ECU will stop counting the number.

      • Freeze Frame Data at the time the ABS operates:

        The skid control ECU stores and updates data whenever the ABS system operates.

        When the ECU stores data at the time a DTC is detected, the data stored during ABS operation is cleared.

      • Freeze Frame Data at the time a DTC is detected:

        When the skid control ECU stores data at the time a DTC is detected, no updates will be performed until the data is cleared.

  2. CHECK FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Chassis / ABS/VSC/TRC / Trouble Codes.

    5. According to the display on the intelligent tester, select the trouble code data display with Freeze Frame Data.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Elapsed Time after Freeze Trigger Elapsed time after freeze trigger / Min.: 0 ms, Max.: 500 ms - -
      Number of IG ON Number of operations of engine switch being turned on (IG) after storing Freeze Frame Data / 0 to 31 - -
      Buzzer Skid control buzzer / ON or OFF

      ON: Buzzer on

      OFF: Buzzer off

      -
      Stop Light SW Stop light switch / ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      -
      Parking Brake SW Parking brake switch / ON or OFF

      ON: Parking brake applied

      OFF: Parking brake released

      -
      Gear Position Gear position information / P/N, R, 1st-8th, FAIL or NOT R Actual gear position -
      Shift Lever Position Shift lever position information / P/N, R, D/M, 1st-6th/B or FAIL Actual shift lever position -
      Operated System Operated system status / ABS, VSC, TRC, BA, HAB, PBA, PB, HA-CTRL, FAIL, SYS or NON -

      ABS: ABS activated

      VSC: VSC activated

      TRC: TRC activated

      BA: BA activated

      HAB: HAB activated

      PBA: PBA activated

      PB: PB activated

      HA-CTRL: Hill-start assist control activated

      FAIL: Fail safe mode activated

      SYS: System prohibit activated

      NON: No operation activated

      Master Cylinder Sensor Master cylinder pressure sensor reading / Min.: 0 V, Max.: 5 V When brake pedal is released: 0.3 to 0.9 V Reading increases when brake pedal is depressed
      M/C Sensor Grade Master cylinder pressure sensor change / Min.: -30 MPa/s, Max.: 225 MPa/s When brake pedal is 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 deg/s, Max.: 127 deg/s

      Vehicle stopped: 0 deg/s

      Turning right: -128 to 0 deg/s

      Turning left: 0 to 127 deg/s

      -
      Lateral G

      Lateral G / Min.: -25.11 m/s2, Max.: 24.91 m/s2

      - During turning: Changes in proportion with acceleration
      Forward and Rearward G

      Forward and backward G / Min.: - 25.11 m/s2, Max.: 24.91 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 (202 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 (202 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 (202 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 (202 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 (202 mph) Vehicle stopped: 0 km/h (0 mph) When driving at constant speed: No large fluctuations
      Vehicle Speed Grade

      Vehicle speed grade / Min.: -25.11 m/s2, Max.: 24.91 m/s2

      Vehicle stopped: 0 m/s2

      During driving: Changes in proportion with vehicle acceleration/deceleration
      FR Wheel Direction Front wheel RH direction signal / FORWARD or BACK

      FORWARD: Forward

      BACK: Backward

      -
      FL Wheel Direction Front wheel LH direction signal / FORWARD or BACK

      FORWARD: Forward

      BACK: Backward

      -
      RR Wheel Direction Rear wheel RH direction signal / FORWARD or BACK

      FORWARD: Forward

      BACK: Backward

      -
      RL Wheel Direction Rear wheel LH direction signal / FORWARD or BACK

      FORWARD: Forward

      BACK: Backward

      -
      Real Engine Torque Real engine torque / Min.: -1024 N*m, Max.: 1023 N*m - -
      Accelerator Opening Angle % The difference of a present accelerator / Min.: 0%, Max.: 128% When the accelerator pedal is released: 0% During accelerator pedal operation: Changes in proportion with the pedal movement
      IG1 Voltage Value IG1 voltage / Min.: 0 V Max.: 255 V - -
      FR Target Oil Pressure Front wheel RH target oil pressure reading / Min.: 0 MPa, Max.: 20 MPa - Changes according to the target wheel cylinder hydraulic pressure
      FL Target Oil Pressure Front wheel LH target oil pressure reading / Min.: 0 MPa, Max.: 20 MPa - Changes according to the target wheel cylinder hydraulic pressure
      RR Target Oil Pressure Rear wheel RH target oil pressure reading / Min.: 0 MPa, Max.: 20 MPa - Changes according to the target wheel cylinder hydraulic pressure
      RL Target Oil Pressure Rear wheel LH target oil pressure reading / Min.: 0 MPa, Max.: 20 MPa - Changes according to the target wheel cylinder hydraulic pressure
      Brake Pedal Load Sensing SW Brake pedal load sensing switch / ON or OFF

      ON: Brake pedal depressed beyond the specified point

      OFF: Brake pedal not depressed beyond the specified point

      -
      Inspection Mode Inspection mode / OTHER or INSPECT

      OTHER: Normal mode

      INSPECT: Inspection mode

      -
      Steering Angle Sensor Steering angle sensor / Min.: - 3276.8 deg, Max.: 3276.7 deg

      Left turn: Increase

      Right turn: Decrease

      -
      TRC/VSC Off Mode TRC/VSC off mode / NORMAL, TRC OFF or VSC OFF

      NORMAL: Normal mode

      TRC OFF: TRC off mode

      VSC OFF: VSC off mode

      -
  3. CLEAR FREEZE FRAME DATA

    Note

    Clearing the DTCs will also clear the Freeze Frame Data.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Clear the DTCs and Freeze Frame Data Click here.