VEHICLE PROXIMITY NOTIFICATION SYSTEM Speaker Circuit

DESCRIPTION

The vehicle approaching speaker controller causes the vehicle approaching speaker assembly to operate (produce a sound) when the vehicle is being driven using EV drive mode. When the vehicle is being driven in EV drive mode, the vehicle approaching speaker controller changes the tone of the sound in accordance with vehicle speed.

WIRING DIAGRAM

A011Z26E03

INSPECTION PROCEDURE

PROCEDURE

  1. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER (OUTPUT WAVEFORM)

    1. Check the output waveform.

      A011WCKE04

      1. Disconnect the A11 vehicle approaching speaker assembly connector.

      2. Connect an oscilloscope to terminal A11-2 (+) and A11-1 (-).

      3. Check the signal waveform according to the condition(s) in the table below.

        Item Condition
        Tool setting 1 V/DIV., 200 ms./DIV.
        Vehicle condition Speaker operating*

        *: Use the operation check procedure to operate the speaker Click here.

        OK
        The waveform is displayed as shown in the illustration.
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Vehicle Approaching Speaker Assembly)
    NG

    CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - VEHICLE APPROACHING SPEAKER ASSEMBLY) Click here

    OK

    REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY Click here

  2. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - VEHICLE APPROACHING SPEAKER ASSEMBLY)

    1. Disconnect the I71 vehicle approaching speaker controller connector.

    2. Disconnect the A11 vehicle approaching speaker assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I71-3 (SP+) - A11-2 (+) Always Below 1 Ω
      I71-8 (SP-) - A11-1 (-) Always Below 1 Ω
      I71-3 (SP+) - Body ground Always 10 kΩ or higher
      I71-8 (SP-) - Body ground Always 10 kΩ or higher
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here