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CHARGING SYSTEM DATA LIST / ACTIVE TEST

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  1. DATA LIST

    Tip:

    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 and ECT / Data List.

    7. According to the display on the GTS, read the Data List.


      1. Powertrain > Engine and ECT > Data List
        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 Malfunction in the battery voltage can be the cause of malfunction
        Alternate Duty Ratio Alternator generation duty ratio Min.: 0%, Max.: 100%

        • No electrical load at idling:

          20 to 60%

        • High electrical load at idling:

          100%

        • This is outputs the alternator generation duty and is used to determine the electrical load.

        • Can be used to determine whether a higher-than-normal injection volume at idle, etc. is due to electrical loading or from some other source. For example, when the duty is not high but the idling injection volume is high, there is injector volume degradation or high engine friction.

        • Can be used for judging whether or not a malfunctioning component in the electrical system is generating continual generation requests (e.g., battery deterioration is causing an unending full recharge request, etc.). Regardless of whether or not an auxiliary device like the A/C or heater is active, if the alternator duty is always at the maximum value, there is an electrical system abnormality, like battery deterioration.
        Battery Current Battery current

        Min.: -125.0 A

        Max.: 124.9 A

        		 Changes according to alternator output (While driving after engine warmed up) If the result is not as specified, a malfunction of the LIN communication line is suspected.
        Battery Temperature Battery temperature

        Min.: -40.0°C (-40°F)

        Max.: 6513.5 °C (11756 °F)

        		 Changes according to actual temperature (While driving after engine warmed up) If the result is not as specified, a malfunction of the LIN communication line is suspected.
        Alternator Output Duty LIN terminal output (charging control signal)

        Min.: 0%

        Max.: 399.993%

        		 Changes in accordance with the generator output: During charging control Malfunction of the charging control system can be the cause of malfunction
        Alt Vol - Non Active Test Requested voltage when regulator forced drive is not executed

        Min.: 0 V

        Max.: 79.998 V

        		 Changes in accordance with the battery fluid temperature and driving condition (12.5 to 14.8 V): After engine started Malfunction of the charging control system can be the cause of malfunction
        Alt Vol - Active Test Requested voltage when regulator forced drive is executed

        Min.: 0 V

        Max.: 79.998 V

        		 Required instruction voltage value when the Active Test "Control the Voltage of Alternator" is executed (12.5 to 14.7 V): After engine started Malfunction of the charging control system can be the cause of malfunction
        Previous Trip Alternator Max Output Time Generator maximum generating time during previous drive

        Min.: 0 sec

        Max.: 65535 sec

        		 - -
        Initial Engine Battery Minimum Voltage Minimum battery voltage at engine start

        Min.: 0 V

        Max.: 25.5 V

        		 - -
        Previous Trip Charge Control Time Charging control time during previous drive

        Min.: 0 sec

        Max.: 65535 sec

        		 - -
        Previous Trip Average Battery Temperature Battery average temperature during previous drive

        Min.: -40°C (-40°F)

        Max.: 215°C (419°F)

        		 - -












      Tip:

      Normal Condition: If no idling conditions are specified, the shift lever should be in N (Neutral) or P, and the A/C switch and all accessory switches should be off.

  2. ACTIVE TEST

    Tip:

    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 and ECT / Active Test.

    5. According to the display on the GTS, perform the Active Test.


      1. Powertrain > Engine and ECT > Active Test
        Tester Display Measurement Item Control Range Diagnostic Note
        Control the Voltage of Alternator Requested output voltage of generator regulator during forced activation Between 12.5 and 14.7 V Test is possible after engine start