CHARGING SYSTEM DATA LIST / ACTIVE TEST


  1. 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. Warm up the engine.

    2. Turn the ignition switch off.

    3. Connect the GTS to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Engine / Data List.

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

    ECM
    Tester Display Measurement Item/Range Normal Condition Diagnostic Note
    Battery Voltage

    Battery voltage:

    Min.: 0 V, Max.: 65.535 V

    11 to 14 V: Idling

    When the battery voltage is below 11 V, other systems may be affected.

    Reference figures:


    • IG ON: 12.5 V

    • When cranking: 9.834 V

    • When idling (after warming up): 13.359 V

    Battery Current

    Battery current:

    Min.: -125 A, Max.: 125 A

    Changes in response to the amount of electricity generated by the alternator: while running after warming up. When a malfunction occurs, there may be a problem with the IB voltage system or the sensor power source.
    Battery Temperature

    Battery temperature:

    Min.: -40°C (-40°F), Max.: 6513.5°C (11756.3°F)

    Changes in response to the actual temperature: while running after warming up. When a malfunction occurs, there may be a problem with the THB voltage system or the sensor power source.
    Alt Vol - Non Active Test

    Displays the voltage required when the regulator is not being forcefully driven:

    Min.: 0 V, Max.: 80 V

    Changes in response to the battery fluid temperature and running state (12.4 to 14.8 V): after starting the engine. When a malfunction occurs, there may be problems with charging control systems.
    Alt Vol - Active Test

    Displays the voltage required when the regulator is being forcefully driven:

    Min.: 0 V, Max.: 80 V

    Specified voltage required when performing the "generation required voltage" active test: after starting the engine.
    • Displays the voltage generated when performing the active test.

    • When a malfunction occurs, there may be problems with the charging control systems.

    Alternator Duty

    Displays the charging control signal:

    Min.: 0%, Max.: 255 %

    Changes in response to the amount of electricity generated by the alternator: while charging control. When a malfunction occurs, there may be problems with the charging control systems.
    Request Voltage to Alternator

    Displays the alternator generation control mode:

    Min.: 0%, Max.: 255 %

    Changes in response to the amount of electricity generated by the alternator: while charging control. When a malfunction occurs, there may be problems with the charging control systems.
    # Codes (Include History)

    Number of DTCs:

    Min.: 0, Max.: 255

    0 -
  2. 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: Powertrain / Engine / Active Test.

    5. Perform the Active Test by referring to the table below.

    ECM
    Tester Display Test Part Control Range Diagnostic Note
    Control the Voltage of Alternator Fluctuations in the required alternator generated voltage. Between 12.8 and 14.1 V While engine running.