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 (ECU or 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 driven 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 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. Turn the engine switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the GTS on.

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


      Chassis > ABS/VSC/TRC > Trouble Codes

    6. Select a DTC to display its Freeze Frame Data.


      Chassis > 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 times engine switch turned on (IG) after Freeze Frame Data stored 0 to 31 - -
      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-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, TSC, Fail, Sys or Non Actual operated system

      ABS: ABS activated

      VSC: VSC activated

      TRC: TRC 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*

      Fail: Fail safe mode activated

      Sys: System prohibit activated

      Non: No operation activated

      Tech Tips

      *: Not supported
      Master Cylinder Sensor Master cylinder pressure sensor reading Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.30 to 0.80 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 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 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 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 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 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 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.: -25.10 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.: 127.0% 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): 11.00 to 14.00 V -
      FR Target Oil Pressure The value of the target oil pressure applied to the front brake RH Min.: 0 Mpa, Max.: 20 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 Mpa, Max.: 20 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 Mpa, Max.: 20 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 Mpa, Max.: 20 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

      		 -
      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 Power train driving force that is currently occurring Min.: -327680 N, Max.: 327670 N - -

  3. CLEAR FREEZE FRAME DATA

    Note

    Clearing the DTCs will also clear the Freeze Frame Data.


    1. Turn the engine switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Clear the DTCs and Freeze Frame Data.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs