VEHICLE STABILITY CONTROL SYSTEM(for TMMF Made) FREEZE FRAME DATA


  1. FREEZE FRAME DATA


    1. Whenever a 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 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 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 intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Check the freeze frame data by following the prompts on the intelligent tester display.

      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 ignition switch being turned to ON after storing Freeze Frame Data/0 to 31 - -
      Stop Light SW Stop light switch/OFF or ON

      OFF: Brake pedal released

      ON: Brake pedal depressed

      		 -
      Parking Brake SW Parking brake switch/OFF or ON

      OFF: Parking brake released

      ON: Parking brake applied

      		 -
      TRC(TRAC)/VSC OFF SW VSC OFF switch/OFF or ON

      OFF: VSC OFF switch released

      ON: VSC OFF switch pushed

      		 -
      Reservoir Warning SW Brake fluid level warning switch signal/OFF or ON

      OFF: Brake fluid level normal

      ON: Brake fluid level low

      		 -
      Gear Position Gear position information/Fail, 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, "P, N", R, Not R - Actual gear position
      Shift Lever Position Shift lever position information/Fail, 1st, 2nd, 3rd, 4th, 5th, 6th/B, D/M, "P, N", R - Actual shift lever position
      Operated System Operated system status/Non, ABS, VSC, TRC, BA, Fail, Sys -

      No operation activated: Non

      ABS activated: ABS

      VSC activated: VSC

      TRC activated: TRC

      BA activated: BA

      Fail safe mode activated: Fail

      System prohibit activated: Sys
      Master Cylinder Sensor Master cylinder pressure sensor reading/Min.: 0 V, Max.: 5 V When brake pedal is released: 0.3 to 0.9 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
      FR Wheel Speed FR wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      When driving at constant speed:

      No large fluctuations
      FL Wheel Speed FL wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      When driving at constant speed:

      No large fluctuations
      RR Wheel Speed RR wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      When driving at constant speed:

      No large fluctuations
      RL Wheel Speed RL wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      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) Actual vehicle speed Speed indicated on speedometer
      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 Nm, Max.: 1023 Nm - -
      Accelerator Opening Angle % The difference of a present accelerator/Min.: 0%, Max.: 128% When the accelerator pedal is released: 0% During accelerator pedal operation: Changes in proportion with the pedal movement
      +B1 Voltage Value IG voltage value / Min.: 0 V, Max.: 20 V - Changes in proportion to auxiliary battery voltage
      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: 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: TRC, VSC OFF mode

      		 -

  3. CLEAR FREEZE FRAME DATA

    Note

    Clearing the DTC 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 DTC and Freeze Frame Data Click here.