VEHICLE STABILITY CONTROL SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA


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

    2. The skid control ECU (brake actuator assembly) 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 (brake actuator assembly) will stop counting the number.

      • Freeze Frame Data at the time the ABS operates:

        The skid control ECU (brake actuator assembly) 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 (brake actuator assembly) 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 GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, 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 msec, Max.: 500 msec - -
      Number of IG ON Number of operations of engine switch being turned on (IG) after storing Freeze Frame Data / 0 to 31 - -
      Buzzer Meter buzzer / ON or OFF

      ON: Buzzer on

      OFF: Buzzer off

      		 The combination meter has a built-in buzzer.
      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, TSC or Non -

      ABS: ABS is activated.

      VSC: VSC is activated.

      TRC: TRC is activated.

      BA: BA is activated.

      HAB: HAB is activated.

      PBA: PBA is activated.

      PB: PB is activated.

      HA-CTRL: Hill-start assist control is activated.

      Fail: Fail safe mode is activated.

      Non: No operation is activated.
      Master Cylinder Sensor Master cylinder pressure sensor reading / Min.: 0.00 V, Max.: 5.00 V When brake pedal is released: 0.3 to 0.9 V The value increases when the 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 Changes in proportion with the pedal movement speed when the brake pedal is being operated.
      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

      		- Changes in proportion with the pedal movement speed when the brake pedal is being operated.
      Forward and Rearward G

      Forward and backward G / Min.: - 25.10 m/s2, Max.: 24.90 m/s2

      		- Changes in proportion with acceleration during acceleration/deceleration.
      FR Wheel Speed Front wheel speed sensor RH reading / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
      FL Wheel Speed Front wheel speed sensor LH reading / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
      RR Wheel Speed Rear wheel speed sensor RH reading / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
      RL Wheel Speed Rear wheel speed sensor LH reading / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
      Vehicle Speed Maximum wheel speed sensor reading / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
      Vehicle Speed Grade

      Vehicle acceleration / Min.: -25.10 m/s2, Max.: 24.90 m/s2

      Vehicle stopped: 0 m/s2

      		Changes in proportion with the vehicle acceleration/deceleration during driving.
      Accelerator Opening Angle % Throttle valve opening amount / Min.: 0.0%, Max.: 128.0% When the accelerator pedal is released: 0% Changes in proportion with the movement of the pedal during accelerator pedal operation.
      IG1 Voltage Value IG1 voltage / Min.: 0.00 V Max.: 20.00 V - -
      FR Target Oil Pressure Front wheel RH target hydraulic pressure / Min.: 0.00 Mpa, Max.: 20.00 Mpa - -
      FL Target Oil Pressure Front wheel LH target hydraulic pressure / Min.: 0.00 Mpa, Max.: 20.00 Mpa - -
      RR Target Oil Pressure Rear wheel RH target hydraulic pressure / Min.: 0.00 Mpa, Max.: 20.00 Mpa - -
      RL Target Oil Pressure Rear wheel LH target hydraulic pressure / Min.: 0.00 Mpa, Max.: 20.00 Mpa - -
      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 sensor / Min.: - 3276.8°, Max.: 3276.7°

      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

      		 -
      Power Train Driving force Powertrain driving force/ Min.: -327680 N, Max.: 327670 N - -

  3. CLEAR FREEZE FRAME DATA

    Note

    Clearing the DTCs will also clear the Freeze Frame Data.


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

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