VEHICLE STABILITY CONTROL SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA


    1. Whenever an ABS and/or VSC 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, 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 of times the engine switch had been turned from off to on (IG).

      • 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 / DTC.

    5. According to the intelligent tester display, select the DTC data display with Freeze Frame Data.

      ABS/VSC/TRC
      Tester Display Measurement Item Reference Value
      Elapsed Time after Freeze Trigger Elapsed time after freeze frame 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 signal Skid control buzzer ON: ON, OFF: OFF
      Stop Light SW Stop light switch signal Stop light switch ON: ON, OFF: OFF
      Parking Brake SW Parking brake switch signal Parking brake switch ON: ON, OFF: OFF
      Gear Position Gear position information

      FAIL

      1st

      2nd

      3rd

      4th

      5th

      6th

      7th

      8th

      P, N

      R

      NOT R
      Shift Lever Position Shift lever position or range information

      FAIL

      1st

      2nd

      3rd

      4th

      5th

      6th/B

      D/M

      P, N

      R
      Operated System Operated system status

      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

      Brake pedal released: 0.3 to 0.9 V

      Brake pedal depressed: 0.8 to 4.5 V
      M/C Sensor Grade Master cylinder pressure sensor change Min.: -30 MPa/s, Max.: 225 MPa/s
      Yaw Rate Sensor Yaw rate sensor reading Min.: -128 deg/s, Max.: 127 deg/s
      Lateral G Lateral G

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

      Forward and Rearward G Forward and backward G

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

      FR Wheel Speed Front wheel speed RH Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph)
      FL Wheel Speed Front wheel speed LH Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph)
      RR Wheel Speed Rear wheel speed RH Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph)
      RL Wheel Speed Rear wheel speed LH Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph)
      Vehicle Speed Vehicle speed reading Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph)
      Vehicle Speed Grade Vehicle speed grade

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

      FR Wheel Direction Front wheel RH direction signal

      Front wheel RH direction

      FORWARD: Forward, BACK: Backward
      FL Wheel Direction Front wheel LH direction signal

      Front wheel LH direction

      FORWARD: Forward, BACK: Backward
      RR Wheel Direction Rear wheel RH direction signal

      Rear wheel RH direction

      FORWARD: Forward, BACK: Backward
      RL Wheel Direction Rear wheel LH direction signal

      Rear wheel LH direction

      FORWARD: Forward, BACK: Backward
      Real Engine Torque Real engine torque Min.: -1024 Nm, Max.: 1023 Nm
      Accelerator Opening Angle % Accelerator opening angle % Min.: 0%, Max.: 128%
      FR Target Oil Pressure Front wheel RH target oil pressure reading Min.: 0 MPa, Max.: 20 MPa
      FL Target Oil Pressure Front wheel LH target oil pressure reading Min.: 0 MPa, Max.: 20 MPa
      RR Target Oil Pressure Rear wheel RH target oil pressure reading Min.: 0 MPa, Max.: 20 MPa
      RL Target Oil Pressure Rear wheel LH target oil pressure reading Min.: 0 MPa, Max.: 20 MPa
      Brake Pedal Load Sensing SW Brake pedal load sensing switch signal Brake pedal load sensing switch ON: ON, OFF: OFF
      Inspection Mode Inspection mode

      OTHER: Normal mode

      INSPECT: Inspection mode
      Steering Angle Sensor Steering angle sensor reading

      Left turn: Increase

      Right turn: Decrease
      Pre Crash Brake OFF Switch*1 Satellite switch (Pre-crash brake cancel switch) signal Satellite switch (Pre-crash brake cancel switch) ON: ON, OFF: OFF
      TRC/VSC Off Mode TRC/VSC off mode

      NORMAL: Normal mode

      TRC OFF: TRC off mode

      VSC OFF: VSC off mode

      *1: Models with pre-crash safety system

  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.