ANTI-LOCK BRAKE SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA

    Tech Tips


    • Whenever a DTC is detected or the ABS operates, the skid control ECU stores the current vehicle (sensor) state as freeze frame data.

    • The skid control ECU stores the number of times (maximum: 31) the ignition switch has been turned from off to on (IG) since the last time the ABS was activated. However, if the vehicle was stationary 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.

    • Freeze frame data at the time the ABS operates:

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

      When the ECU stores data at the time a DTC is detected, the data stored when the ABS operated 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.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to the ON position and turn the tester on.

    3. From the display on the tester, select "FREEZE FRAME DATA".

      Intelligent Tester Display Measurement Item Reference Values
      Stop Light SW Stop light switch signal Stop light switch ON: ON, OFF: OFF
      Operated System Operated system history ABS operated: ABS
      Number of IG ON Number of ignition switch ON operations since memorizing freeze frame data 0 to 31
      Vehicle Speed Vehicle speed Meter speed indication
      Vehicle Speed Grade* Vehicle speed grade min.: -1.869, max.: 1.869
      Freeze DTC Number of Freeze DTCs min.: 0, max.: 255

      *: The levels of acceleration and deceleration.