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Data List / Active Test

  1. DATA LIST 

    HINT:

    Using the intelligent tester or Techstream to read the Data List allows the values or states of switches, sensor, 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 intelligent tester or Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the tester on.
    4. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / OBD/ MOBD / MAYDAY GATWAY / DATA LIST / ALL /
      2. Techstream - Select: Body Electrical / Mayday Gateway / Data List /
    5. According to the display on tester, read the "Data List".
      1. Intelligent tester

        MAYDAY GATEWAY 

        INTELLIGENT TESTER MAYDAY GATEWAY

        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        LOST MSG(V BUS) Number of transmission buffer overrides (V BUS)/ 0 to 255 0 -
        LOST MSG(MAY) Number of transmission buffer overrides (mayday ECU)/ 0 to 255 0 -
        SEND WAIT-FRAME Number of Wait-frame transmissions/ 0 to 255 0 -
        MAYDAY1 ECU judgment/ WITH or WITHOUT WITH -
        MAYDAY2 ECU judgment/ WITH or WITHOUT WITHOUT -
        MAYDAY3 ECU judgment/ WITH or WITHOUT WITHOUT -
        MAYDAY4 ECU judgment/ WITH or WITHOUT WITHOUT -
        WAKEUP(V BUS) Wakeup judgment (V BUS)/ YES or NO YES -
        WAKEUP(MAY) Wakeup judgment (mayday ECU)/ YES or NO YES -
        BATTERY VOL Vehicle battery voltage 0 to 25.5 [V] Displays present battery state -
        DTC Number of diagnosis codes - -
      2. Techstream

        Mayday Gateway 

        TECHSTREAM MAYDAY GATEWAY

        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        Lost Message from Vehicle Bus Number of transmission buffer overrides (V BUS)/ 0 to 255 0 -
        Lost Message from Mayday Bus Number of transmission buffer overrides (mayday ECU)/ 0 to 255 0 -
        Send Wait-Frame Number of Wait-frame transmissions/ 0 to 255 0 -
        Mayday ECU 1 ECU judgment/ WITH or WITHOUT WITH -
        Mayday ECU 2 ECU judgment/ WITH or WITHOUT WITHOUT -
        Mayday ECU 3 ECU judgment/ WITH or WITHOUT WITHOUT -
        Mayday ECU 4 ECU judgment/ WITH or WITHOUT WITHOUT -
        Wakeup from Vehicle Bus Wakeup judgment (V BUS)/ YES or NO YES -
        Wakeup from Mayday Bus Wakeup judgment (mayday ECU)/ YES or NO YES -
        Battery Voltage Vehicle battery voltage 0 to 25.5 [V] Displays present battery state -
        #DTC Number of diagnosis codes - -
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