VEHICLE STABILITY CONTROL SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA


    1. Whenever a brake control system DTC is stored, 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 ignition switch has been turned from off to ON since the last time the brake control system 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 stored, the skid control ECU will stop counting the number of times the ignition switch has been turned from off to ON.

      • Freeze Frame Data at the time the brake control system operates:

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

        When the ECU stores data at the time a DTC is stored, the data stored during brake control system operation is cleared.

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

        When the skid control ECU stores data at the time a DTC is stored, 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 ignition switch to ON.

    3. Turn the intelligent tester on.

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

    5. According to the display on the tester, select the Freeze Frame Data.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Elapsed Time after Freeze Trigger

      Elapsed time after freeze frame trigger/

      Min.: 0 msec, Max.: 500 msec

      		 - -
      Number of IG ON

      Number of operations of ignition switch being turned to ON after storing Freeze Frame Data/

      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/

      Fail / 1st-8th / "P,N" / R / Not R

      		 Actual gear position -
      Shift Lever Position

      Shift lever position information/

      Fail / 1st-6th/B / D/M / "P,N" / R

      		 Actual shift lever position -
      Operated System

      Operated system status/

      ABS / VSC / TRC / BA / HAB / Fail / PBA / PB / HA-CTRL / TCS / Sys / Non

      		 -

      ABS activated: ABS

      VSC activated: VSC

      TRC activated: TRC

      BA activated: BA

      Fail-safe mode activated: Fail

      System prohibit activated: Sys

      No system activated: Non
      Master Cylinder Sensor

      Master cylinder pressure sensor reading/

      Min.: 0.00 V, Max.: 5.00 V

      		 Brake pedal released: 0.3 to 0.9 V Reading increases when the 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 held at constant position: 0 MPa/s When the brake pedal is being operated: Changes in proportion to the 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 acceleration/

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

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

      Forward and backward acceleration/

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

      During acceleration/deceleration:

      Changes in proportion to acceleration

      		 -
      FR Wheel Speed

      Front speed sensor RH reading/

      Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      		 Actual wheel speed

      When driving at a constant speed:

      No large fluctuations
      FL Wheel Speed

      Front speed sensor LH reading/

      Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      		 Actual wheel speed

      When driving at a constant speed:

      No large fluctuations
      RR Wheel Speed

      Rear speed sensor RH reading/

      Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      		 Actual wheel speed

      When driving at a constant speed:

      No large fluctuations
      RL Wheel Speed

      Rear speed sensor LH reading/

      Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      		 Actual wheel speed

      When driving at a constant speed:

      No large fluctuations
      Vehicle Speed

      Maximum wheel speed sensor reading/

      Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      		 Actual vehicle speed Speed indicated on speedometer
      Vehicle Speed Grade

      Vehicle acceleration/

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

      		During driving: Changes in proportion to vehicle acceleration/deceleration -
      Real Engine Torque

      Actual engine torque/

      Min.: -1024 Nm, Max.: 1023 Nm

      		 - -
      Accelerator Opening Angle %

      Throttle valve opening amount/

      Min.: 0.0%, Max.: 128.0%

      		 During accelerator pedal operation: Changes in proportion to the pedal movement -
      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°

      Left turn: Increases

      Right turn: Decreases

      		 -
      TRC/VSC Off Mode

      TRC/VSC off mode/

      Normal / TRC OFF / 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 ignition switch to ON.

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