CHARGING SYSTEM DATA LIST / ACTIVE TEST


  1. READ DATA LIST

    Tech Tips

    Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    Note

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Charging Control / Data List.

    5. Check the values by referring to the table below.

      Charging Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Battery Voltage Battery voltage/0.0 to 39.9 V 11 to 14 V When the value is outside of the specified range, there may be a problem with the battery.
      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 If the value does not change as specified, there may be a problem with the IB circuit or sensor power source.
      Battery Temperature Battery electrolyte temperature calculated using battery thermistor (battery current sensor) output/-160.0 to 159.9°C (-256.0 to 319.8°F) Changes in response to actual temperature after engine warmed up while vehicle driven If the value does not change as specified, there may be a problem with the THB circuit or sensor power source.
      Alternator Output Duty RLO terminal output (charge control signal)/0.0 to 199.2% Changes in response to generator power generation amount during charging control If the value does not change as specified, there may be a malfunction in the charging control system.
      Alternator Voltage Requested voltage output to generator/0.00 to 39.99 V Changes in response to generator power generation amount during charging control If the value does not change as specified, there may be a malfunction in the charging control system.
      Number of DTCs Number of DTCs/0 to 255 - -

  2. PERFORM ACTIVE TEST

    Tech Tips

    Using the GTS to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Charging Control / Active Test.

    5. Perform the Active Test according to the display on the GTS.

    Charging Control
    Tester Display Test Part Control Range Diagnostic Note
    Control the Voltage of Alternator Forced generator power generation voltage command 12.5 to 14.6 V This Active Test requires the engine to be running.