ECD SYSTEM FREEZE FRAME DATA


  1. DESCRIPTION

    The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the air fuel ratio was lean or rich, as well as the other data recorded at the time of a malfunction.

    Tech Tips

    If it is impossible to duplicate the problem even though aDTC is stored, confirm the freeze frame data.


    • B0025ZPE12
      *1 DTC is stored
      *2 0.5 seconds
      *3 Freeze frame data recorded

      The ECM records engine conditions in the form of freeze frame data every 0.5 seconds. Using the GTS, 5 separate sets of freeze frame data can be checked.


      • 3 data sets from before the DTC was stored

      • 1 data set from when the DTC was stored

      • 1 data set from after the DTC was stored


      • These data sets can be used to simulate the condition of the vehicle from around the time of the occurrenceof the malfunction. The data may assist in identifying the cause of the malfunction, and in judging whether it was temporary or not.

  2. LIST OF FREEZE FRAME DATA


    Powertrain > Engine
    Tester Display
    Vehicle Speed
    Engine Speed
    MAP
    Coolant Temp
    Intake Air
    Engine Run Time
    Battery Voltage
    Glow Indicator Supported
    Glow Indicator
    Accel Position
    Accel Sens. No.1 Volt %
    Accel Sens. No.2 Volt %
    Diesel Throttle Learn Status
    Throttle Step Position
    Injection Volume
    Inj. FB Vol. for Idle
    Fuel Temperature
    Starter Signal
    Clutch Switch
    Stop Light Switch
    A/C Signal
    Throttle Open Switch
    Immobiliser Communication
    Time after DTC Cleared
    Distance from DTC Cleared
    Warmup Cycle Cleared DTC
    TC and TE1
    ACT VSV
    Brake Override System