ANTI-LOCK BRAKE SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA


    1. 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 the ON position since the last time the ABS was activated.

      Tech Tips


      • However, if the vehicle is stopped or at low speed (4.3 mph (7 km/h) 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 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. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to the ON position.

    4. On the tester display, select the FREEZE FRAME DATA.

      Intelligent Tester Display Measurement Item Reference Value
      Vehicle Speed Vehicle speed reading Min.: 0 mph (0 km/h), Max.: 202 mph (326.4 km/h)
      Stop Light SW Stop light switch signal Stop light switch ON: ON, OFF: OFF
      Number of IG ON Number of operations of ignition switch ON after memorizing freeze frame data 0 to 31
      Operated System System status

      ABS activated: ABS

      No system activated: NO SYS
      Freeze DTC Freeze DTC (Trouble code) -
      Vehicle Speed Grade Vehicle speed change Min: -1.869 G, Max.: 1.869 G