HORN SYSTEM DATA LIST / ACTIVE TEST


  1. DATA LIST

    Tech Tips

    Using the intelligent tester 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 to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus:


      1. Intelligent tester - Select: Body / (desired system) / Data List /

    5. According to the display on tester, read the "Data List".


      1. Intelligent tester

        Body No.5
        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        Horn Tr

        Horn condition/

        OK / Heat / Load

        OK: Horn is normal

        Heat: ECU is overheated

        Load: ECU internal short, wire short or horn short

        		 -
        #Codes Number of diagnosis codes - -
        Steering Pad Switch
        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        Horn switch

        Horn button status

        / ON or OFF

        OK: Horn button is pressed

        OFF: Horn button is not pressed

        		 -

  2. ACTIVE TEST

    Tech Tips

    Using the intelligent tester to perform the Active Tests allows relays, VSVs and 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 intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus:


      1. Intelligent tester - Select: Body / Body No.5 /Active Test /

        Note

        When a Body No. 5 (front light ECU) related vehicle switch is ON, Active Test items related to the vehicle switch are prohibited (double operation prohibition). Check that the vehicle switches are OFF before performing Active Tests.

    5. According to the display on tester, perform the "Active Test".


      1. Intelligent tester

        Body No.5
        Tester Display Test Part Control Range
        Horn Relay Vehicle horns ON / OFF