CHARGING 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 engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

    Tech Tips


    • If it is impossible to replicate the problem even though a DTC is detected, confirm the freeze frame data.

    • Freeze frame data is available in long and short forms.

  2. LIST OF FREEZE FRAME DATA

    w/ Battery State Sensor Assembly


    Powertrain > Engine and ECT
    Tester Display
    Battery Voltage
    Alternate Duty Ratio
    Battery Current
    Battery Temperature
    Alternator Output Duty
    Alt Vol - Non Active Test
    Alt Vol - Active Test

    w/o Battery State Sensor Assembly


    Powertrain > Engine and ECT
    Tester Display
    Battery Voltage
    Alternate Duty Ratio
    Alternator Output Duty
    Alt Vol - Non Active Test
    Alt Vol - Active Test