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. Detection Item DTC Detection Condition Trouble Area
B1350 Speaker Circuit

Either of the following conditions is met:


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

  • When the sound output voltage is being monitored by the ECU, with the power switch on (IG) and a 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

WIRING DIAGRAM

B002J2LE04
*a SP+
*b SP-
*c Vehicle Approaching Speaker Assembly
*d Vehicle Approaching Speaker Controller

PROCEDURE


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


    1. Disconnect the A67 vehicle approaching speaker controller connector.

    2. Disconnect the A66 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
      A67-3 (SP+) - A66-1 (+) Always Below 1 Ω
      A67-8 (SP-) - A66-2 (-) Always Below 1 Ω
      A67-3 (SP+) or A66-1 (+) - Body ground Always 10 kΩ or higher
      A67-8 (SP-) or A66-2 (-) - Body ground Always 10 kΩ or higher
      A67-3 (SP+) - A67-8 (SP-) Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER

    B002KDFC10
    *a

    Front view of wire harness connector

    (to Vehicle Approaching Speaker Assembly)

    		 - -

    1. Disconnect the vehicle approaching speaker assembly connector.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS 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 GTS.


      Body Electrical > Vehicle Proximity Notification System > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Proximity Sound (Vehicle Stationary) Proximity sound (Vehicle stationary) OFF or ON Produces warning sound when vehicle is stopped

      Body Electrical > Vehicle Proximity Notification System > Active Test
      Tester Display
      Proximity Sound (Vehicle Stationary)

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

      Item Condition
      Tester Connection A66-1 (+) - A66-2 (-)
      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.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    OK

  3. INSPECT VEHICLE APPROACHING SPEAKER ASSEMBLY

    Note


    • Make sure that there is no looseness, rattling, or other problem with the vehicle approaching speaker assembly installation.

    • Make sure that there is no foreign matter inside the vehicle approaching speaker assembly.


    1. Remove the vehicle approaching speaker assembly.

      Click here

    2. Inspect the vehicle approaching speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY Click here