VEHICLE PROXIMITY NOTIFICATION SYSTEM, Diagnostic DTC:B1350

DTC Code DTC Name
B1350 Speaker Circuit

DESCRIPTION

The vehicle approaching speaker assembly circuit consists of the vehicle approaching speaker controller and vehicle approaching speaker assembly.

This DTC is stored when a malfunction is detected in the vehicle approaching speaker assembly circuit.

DTC No. DTC Detection Condition Trouble Area
B1350

Either of the following conditions is met:


  • When sound output voltage is being monitored by the ECU, with the power switch on (IG), battery voltage 10 V or more, and warning sound being produced, a speaker circuit short condition continues for 1 second or more.

  • When sound output voltage is being monitored by the ECU, with the power switch on (IG) and warning sound not being produced, a speaker circuit open condition continues for 5 seconds or more.

  • Vehicle approaching speaker controller

  • Vehicle approaching speaker assembly

  • Harness or connector between vehicle approaching speaker controller and vehicle approaching speaker assembly

WIRING DIAGRAM

A01I5XEE07

INSPECTION PROCEDURE

PROCEDURE


  1. 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+) - A11-1 (+) Always Below 1 Ω
      I71-8 (SP-) - A11-2 (-) Always Below 1 Ω
      I71-3 (SP+) or A11-1 (+) - Body ground Always 10 kΩ or higher
      I71-8 (SP-) or A11-2 (-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT VEHICLE APPROACHING SPEAKER CONTROLLER


    1. Reconnect the I71 vehicle approaching speaker controller connector.

    2. Connect the Techstream to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the Techstream on.

    5. Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Active Test.

    6. Perform the Active Test according to the display on the Techstream.

      Vehicle Proximity Notification System
      Tester Display Test Part Control Range Diagnostic Note
      Proximity Sound (Vehicle Stationary) Proximity sound (Vehicle stationary) OFF or ON Produces warning sound when vehicle is stopped
    7. A01I2JUE07
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Vehicle Approaching Speaker Assembly)

      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 Vehicle approaching speaker operating
      OK
      The waveform is similar to that shown in the illustration.

    NG

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    OK

  3. INSPECT VEHICLE APPROACHING SPEAKER ASSEMBLY


    1. Remove the vehicle approaching speaker assembly Click here.

    2. Inspect the vehicle approaching speaker assembly Click here.


    NG

    REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here