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Freeze Frame Data

  1. FREEZE FRAME DATA 
    1. Whenever an ABS DTC is detected, 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 ABS was activated.

      HINT:

      • 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 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 erased.

      • 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. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the the Techstream on.
    4. Check the freeze frame data by following the prompts on the Techstream display.
      1. ABS/VSC/TRAC: 
        FREEZE FRAME DATA - ABS/VSC/TRAC

        Tester Display Measurement Item Reference Value
        Elapsed Time after Freeze Trigger Elapsed time after freeze trigger Min.: 0 ms, Max.: 500 ms
        Number of 1G ON Number of operations of ignition switch being turned to ON after storing Freeze Frame Data 0 to 31
        Buzzer Skid control buzzer signal Skid control buzzer ON: ON, OFF: OFF
        Stop Lamp 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
        Gear Position Gear position information FAIL
        P, N
        R
        NOT R
        1st
        2nd
        3rd
        4th
        5th
        6th
        Shift Lever Position Shift lever position information FAIL
        P, N
        R
        D/M
        1st
        2nd
        3rd
        4th
        5th
        6th/B
        Operated System Operated system status ABS activated: ABS
        VSC activated: VSC
        TRAC activated: TRC
        BA activated: BA
        HAB activated: HAB
        Fail safe mode activated: FAIL
        System prohibit activated: SYS
        No operation activated: NON
        Master Cylinder Sensor Master cylinder pressure sensor reading Brake pedal released: 0.3 to 0.9 V
        Brake pedal depressed: 0.8 to 4.5 V
        M/C Sensor Grade Master cylinder pressure sensor change Min.: -30 MPa/s, Max.: 225 MPa/s
        Yaw Rate Sensor Yaw rate sensor reading Min.: -128 deg/s, Max.: 127 deg/s
        Lateral G Lateral G Min.: -25.11 m/s2 , Max.: 24.91 m/s2
        Forward and Rearward G Forward and backward G Min.: -25.11 m/s2 , Max.: 24.91 m/s2
        FR Wheel Speed FR wheel speed Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph)
        FL Wheel Speed FL wheel speed Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph)
        RR Wheel Speed RR wheel speed Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph)
        RL Wheel Speed RL wheel speed Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph)
        Vehicle Speed Vehicle speed reading Min.: 0 km/h (0 mph), Max.: 326.4 km/h (202 mph)
        Vehicle Speed Grade Vehicle speed grade Min.: -25.11 m/s2 , Max.: 24.91 m/s2
        Real Engine Torque Real engine torque Min.: -1024 Nm, Max.: 1023 Nm
        Accelerator Opening Angle % Accelerator opening Angle % Min.:0%, Max.: 128%
        Inspection Mode Inspection mode OTHER: Normal mode
        INSPECT: Inspection mode
        Steering Angle Sensor Steering angle sensor reading Left turn: Increase
        Right turn: Decrease
        TRC/VSC Off Mode TRAC/VSC off mode NORMAL: Normal mode
        TRC OFF: TRAC OFF mode
        VSC OFF: VSC OFF mode
  3. CLEAR FREEZE FRAME DATA 
    NOTE: Clearing the DTC will also clear the Freeze Frame Data.
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Clear the DTC and Freeze Frame Data (See DTC CHECK / CLEAR  and FREEZE FRAME DATA  ).