CHARGING SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA


    1. The ECM stores the vehicle condition when a DTC is output, and this information can be displayed using the GTS.

    2. Freeze frame data when a DTC is output.


      1. When a DTC is output, the freeze frame data at the time the DTC is output is stored.

      2. When freeze frame data is stored when a DTC is output, the data is not updated or deleted until DTCs are cleared.

  2. CHECK FREEZE FRAME DATA


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    5. Select a DTC to display the freeze frame data.

    6. Check the freeze frame data for the output DTC.

  3. LIST OF FREEZE FRAME DATA

    Tech Tips

    The chart below indicates the items related to the charging system from the freeze frame data recorded by the SFI system.

    Charging Control
    Tester Display Measurement Item/Range Normal Condition Diagnostic Note
    Battery Voltage Battery voltage/0.000 to 66.000 V 11 to 14 V -
    Battery Current Battery current/-125.0 to 124.9 A Changes in response to generator power generation amount after engine warmed up while vehicle driven -
    Battery Temperature Battery electrolyte temperature calculated using battery thermistor (battery current sensor) output/-40.0 to 6513.5°C (-40 to 11756°F) Changes in response to actual temperature after engine warmed up while vehicle driven -
    Alternator Output Duty LIN terminal output (charging control signal)/0.0 to 399.9% Changes in response to generator power generation amount during charging control -
    Alt Vol - Non Active Test Requested voltage when regulator forced drive is not executed/0.000 to 79.998 V

    Changes in accordance with the battery fluid temperature and driving condition (12.5 to 14.8 V):

    After engine started

    		 -
    Alt Vol - Active Test Requested voltage when regulator forced drive is executed/0.000 to 79.998 V

    Required instruction voltage value when the Active Test "Control the Voltage of Alternator" is executed (12.5 to 14.6 V):

    After engine started

    		 -