ANTI-LOCK BRAKE SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA


    1. Whenever a DTC is detected, the brake actuator assembly (skid control ECU) stores the current vehicle (sensor) state as Freeze Frame Data.

    2. The brake actuator assembly (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.

      Tech Tips


      • 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 brake actuator assembly (skid control ECU) will stop counting the number.

      • Freeze Frame Data at the time the ABS operates:

        The brake actuator assembly (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 cleared.

      • Freeze Frame Data at the time a DTC is detected:

        When the brake actuator assembly (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 intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Check the freeze frame data by following the prompts on the intelligent tester display.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      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/ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      Parking Brake SW Parking brake switch/ON or OFF

      ON: Parking brake applied

      OFF: Parking brake released

      		 -
      Operated System Operated system status/ABS, VSC, TRC, BA, FAIL, SYS, NON -

      ABS activated: ABS

      VSC activated: VSC

      TRC activated: TRC

      BA activated: BA

      Fail safe mode activated: FAIL

      System prohibit activated: SYS

      No operation activated: NON
      FR Wheel Speed FR wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      When driving at constant speed:

      No large fluctuations
      FL Wheel Speed FL wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      When driving at constant speed:

      No large fluctuations
      RR Wheel Speed RR wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      When driving at constant speed:

      No large fluctuations
      RL Wheel Speed RL wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)

      Vehicle stopped:

      0 km/h

      When driving at constant speed:

      No large fluctuations
      Vehicle Speed Maximum wheel speed sensor reading/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) Actual vehicle speed Speed indicated on speedometer
      Vehicle Speed Grade

      Vehicle speed grade/Min.: -25.10 m/s2, Max.: 24.90 m/s2

      Vehicle stopped: 0 m/s2

      		During driving: Changes in proportion with vehicle acceleration/deceleration

  3. CLEAR FREEZE FRAME DATA

    Note

    Clearing the DTC will also clear the Freeze Frame Data.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Clear the DTC and Freeze Frame Data Click here.