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, 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 intelligent tester to the DLC3.

    2. Turn the power switch ON (IG).

    3. Turn the tester on.

    4. Enter the following menus:


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

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

      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

      ON: 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 power switch ON (IG).

    3. Turn the tester on.

    4. Enter the following menus:


      1. Select: Body / Body No.5 /Active Test.

        Note

        When a Body No. 5 (front controller) 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".

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