VEHICLE STABILITY CONTROL SYSTEM > FREEZE FRAME DATA

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FREEZE FRAME DATA

  1. The skid control ECU stores the current vehicle (sensor) state as freeze frame data when a DTC is detected, or when the ABS, BA, TRAC or VSC are operating.
    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, BA, TRAC or VSC was activated.

    HINT:
    1. The skid control ECU will not count the number of times the ignition switch is turned ON if the vehicle does not drive at a speed of at least 7 km/h (4.3 mph), or a DTC is detected.
    2. Freeze frame data at the time the ABS, BA, TRAC or VSC operates:
      The skid control ECU stores and updates the data whenever the ABS, BA, TRAC or VSC system operates.
      When the ECU stores data at the time a DTC is detected, the data stored when the ABS, BA, TRAC or VSC operated may be erased.
    3. 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. Connect the Techstream to the DLC3.

  3. Turn the ignition switch to ON.

  4. From the display on the Techstream, select the FREEZE FRAME DATA.

    Skid control ECU: 
    Tester Display
    		Measurement Item
    		Reference Value
    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 ON after storing freeze frame data
    		0 to 31
    Stop Light SW
    		Stop light switch signal
    		Stop light switch ON: ON, OFF: OFF
    Parking Brake SW
    		Parking brake switch signal
    		Parking brake switch ON: ON, OFF: OFF
    TRC(TRAC)/VSC OFF SW
    		VSC OFF switch / ON or OFF
    		VSC OFF switch ON: ON, OFF: OFF
    Gear Position
    		Gear position information
    		Fail
    1st
    2nd
    3rd
    4th
    5th
    6th
    7th
    8th
    P, N
    R
    Not R
    Operated System
    		Operated system status
    		ABS activated: ABS
    VSC activated: VSC
    TRAC activated: TRAC
    BA activated: BA
    HAB activated: HAB
    Fail-safe mode activated: Fail
    PBA activated: PBA
    PB activated: PB
    Hill-start assist control activated: HA-CTRL
    System prohibited: Sys
    No system activated: Non
    Master Cylinder Sensor
    		Master cylinder pressure sensor reading
    		Min.: 0.00 V, Max.: 5.00 V
    M/C Sensor Grade
    		Master cylinder pressure sensor change
    		Min.: -30 MPa/s, Max.: 225 MPa/s
    Stroke Sensor
    		Stroke sensor reading
    		Min.: 0.00 V, Max.: 5.00 V
    Stroke Sensor Grade
    		Speed of brake pedal as measured by pedal stroke sensor
    		Min.: -2560 mm/s, Max.: 2540 mm/s
    Yaw Rate Sensor
    		Yaw rate sensor reading
    		Min.: -128°/s, Max.: 127°/s
    Steering Angle Sensor
    		Steering angle sensor reading
    		Min.: -1152°
    Max.: 1143°
    Lateral G
    		Lateral G
    		Min.: -25.10 m/s2, Max.: 24.90 m/s2
    Forward and Rearward G*
    		Forward and rearward G
    		Min.: -25.10 m/s2, Max.: 24.90 m/s2
    FR Wheel Speed
    		Front right wheel speed reading
    		Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    FL Wheel Speed
    		Front left wheel speed reading
    		Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    RR Wheel Speed
    		Rear right wheel speed reading
    		Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    RL Wheel Speed
    		Rear left wheel speed reading
    		Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    Vehicle Speed
    		Vehicle speed reading
    		Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    Vehicle Speed Grade
    		Vehicle speed grade
    		Min.: -25.10 m/s2, Max.: 24.90 m/s2
    Real Engine Torque
    		Real engine torque
    		Min.: -1024.0 Nm, Max.: 1023.0 Nm
    TRAC/VSC Off Mode
    		TRAC/VSC Off Mode
    		Normal mode: Normal
    TRAC OFF mode: TRC OFF
    VSC OFF mode: VSC OFF
    *: for 4WD