VEHICLE STABILITY CONTROL SYSTEM FREEZE FRAME DATA

  1. FREEZE FRAME DATA

    1. Whenever a 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 engine switch has been turned from off to on (IG) since the last time the ABS/VSC was activated.

      Tip:

      • If the vehicle is stopped or at a low speed (7 km/h (4 mph) or less), or if a DTC is stored, the skid control ECU will stop counting the number of times the engine switch has been turned from off to on (IG).

      • Freeze frame data at the time the ABS/VSC operates:

        The skid control ECU stores and updates data whenever the ABS/VSC operates.

        When the ECU stores data at the time a DTC is stored, the data stored during ABS/VSC 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 engine switch on (IG).

    3. Turn the intelligent tester on.

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

    5. According to the display on the intelligent tester, select the trouble code data display with 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 storing freeze frame data

      0 to 31

      -

      -

      Buzzer

      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

      -

      Reservoir Warning SW

      Brake fluid level warning switch

      ON or OFF

      OFF

      -

      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 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.

      Sys: System prohibit 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 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 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 and acceleration 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)

      When driving at constant speed: No large fluctuations

      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.

      FR Wheel Direction

      Front wheel RH direction signal

      Forward or Back

      Forward: Forward

      Back: Backward

      -

      FL Wheel Direction

      Front wheel LH direction signal

      Forward or Back

      Forward: Forward

      Back: Backward

      -

      RR Wheel Direction

      Rear wheel RH direction signal

      Forward or Back

      Forward: Forward

      Back: Backward

      -

      RL Wheel Direction

      Rear wheel LH direction signal

      Forward or Back

      Forward: Forward

      Back: Backward

      -

      Real Engine Torque

      Actual engine torque

      Min.: -1024.0 Nm, Max.: 1023.0 Nm

      -

      -

      Accelerator Opening Angle %

      Throttle valve opening amount

      Min.: 0.0%, Max.: 128.0%

      When accelerator pedal released: 0%

      Changes in proportion with the movement of the pedal during accelerator pedal operation.

      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

      -

      Pre Crash Brake OFF Switch

      Pre-crash brake cancel switch*

      ON or OFF

      ON: Pre-crash brake cancel switch on

      OFF: Pre-crash brake cancel switch off

      -

      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

      -

      • *: w/ Dynamic Radar Cruise Control System

  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 engine switch on (IG).

    3. Clear the DTCs and freeze frame data (Click here).