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Freeze Frame Data

  1. FREEZE FRAME DATA 
    1. Whenever a 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 a Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Check the freeze frame data by following the prompts on the Techstream display.

      ABS/VSC/TRAC: 

      REFERENCE VALUE CHART

      Tester Display Measurement Item Reference Value
      Elapsed Time after Freeze Trigger Elapsed time after freeze trigger Min.: 0 ms, Max.: 500 ms
      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 signal Stop light switch ON: ON, OFF: OFF
      Parking Brake SW Parking brake switch signal Parking brake switch ON: ON, OFF: OFF
      Operated System Operated system status ABS activated: ABS
      Fail safe mode activated: FAIL
      System prohibit activated: SYS
      No operation activated: NON
      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
  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  ).
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