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 (ECU or sensor) state as Freeze Frame Data.

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

      Tech Tips


      • However, 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 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. Turn the ignition switch off.

    2. Connect the Techstream to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the Techstream on.

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

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

      ABS/VSC/TRAC
      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 ignition switch turned to ON after Freeze Frame Data stored / 0 to 31 - -
      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, TRAC, BA, HAB, PBA, PB, HA-CTRL, TSC, Fail, Sys or Non Actual operated system

      ABS: ABS activated

      VSC: VSC activated

      TRAC: TR(A)C activated

      BA: BA activated

      HAB: HAB activated

      PBA: PBA activated

      PB: PB activated

      HA-CTRL: Hill-start assist control activated

      TSC: TSC activated

      Fail: Fail safe mode activated

      Sys: System prohibit activated

      Non: No operation activated
      Master Cylinder Sensor Master cylinder pressure sensor reading / Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.20 to 0.40 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 °/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 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 m/s2

      		During driving: Changes in proportion with vehicle acceleration/deceleration
      Real Engine Torque Real engine torque / Min.: -1024.0 Nm, Max.: 1023.0 Nm - -
      Accelerator Opening Angle % The difference of a present accelerator / Min.: 0.0%, Max.: 128.0% When the accelerator pedal is released: 0.0% During accelerator pedal operation: Changes in proportion with the pedal movement
      Brake Pedal Load Sensing SW Brake pedal load sensing switch / ON or OFF

      ON: Brake pedal depressed beyond a specified point

      OFF: Brake pedal not depressed beyond a specified point

      		 -
      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 TR(A)C/VSC off mode / Normal, TRC OFF or VSC OFF

      Normal: Normal mode

      TRC OFF: TR(A)C off mode

      VSC OFF: VSC off mode

      		 -

  3. CLEAR FREEZE FRAME DATA

    Note

    Clearing the DTC will also clear the Freeze Frame Data.


    1. Turn the ignition switch off.

    2. Connect the Techstream to the DLC3.

    3. Turn the ignition switch to ON.

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