VEHICLE PROXIMITY NOTIFICATION SYSTEM There is No Sound Made

DTC Code DTC Name
There is No Sound Made

DESCRIPTION

The vehicle approaching speaker controller receives stop light switch signals from the stop light switch assembly, vehicle speed signals from the combination meter assembly and permission signals from the hybrid vehicle control ECU, and produces the warning sound from the vehicle approaching speaker assembly.

WIRING DIAGRAM

E341441E01

CAUTION / NOTICE / HINT

Note:

Inspect the fuses and relays for circuits related to this system before performing the following inspection procedure.

PROCEDURE

  1. CHECK FOR DTC

    1. Check for DTCs.

      Click here

      Body Electrical > Vehicle Proximity Notification System > Trouble Codes

      OK

      DTCs are not output.

    Result

    Result

    Proceed to

    DTC B1350 is not output.

    A

    DTC B1350 is output.

    B

    Communication with the Techstream is not possible.

    C
    B

    GO TO DTC B1350

    Click here

    C

    GO TO OTHER DIAGNOSIS PROCEDURE (Communication between Vehicle Proximity Notification System and Diagnostic Tool is not Possible)

    Click here

    A

  2. PERFORM ACTIVE TEST USING GTS (Proximity Sound [Vehicle Stationary])

    1. Using the GTS, perform the Active Test.

      Click here

      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)

      OK

      The vehicle proximity notification system sounds or stops sounding according to the GTS display.

    Result

    Proceed to

    OK

    NG
    NG

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

    OK

  3. READ VALUE USING GTS (Stop Light SW)

    1. Using the GTS, read the Data List.

      Click here

      Body Electrical > Vehicle Proximity Notification System > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Stop Light SW

      Stop light switch

      OFF or ON

      OFF: Brake pedal released

      ON: Brake pedal depressed

      -

      Body Electrical > Vehicle Proximity Notification System > Data List

      Tester Display

      Stop Light SW

      OK

      GTS display changes according to the state of the brake pedal.

    Result

    Proceed to

    OK

    NG
    NG

    CHECK STOP LIGHT OPERATIONClick here

    OK

  4. READ VALUE USING GTS (Vehicle Speed)

    1. Using the GTS, read the Data List.

      Click here

      Body Electrical > Vehicle Proximity Notification System > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Vehicle Speed

      Vehicle speed

      Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)

      Almost the same as actual vehicle speed

      -

      Body Electrical > Vehicle Proximity Notification System > Data List

      Tester Display

      Vehicle Speed

      OK

      GTS display changes according to vehicle speed.

    Result

    Proceed to

    OK

    NG
    NG

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

    OK

  5. READ VALUE USING TECHSTREAM (Permission Signal)

    1. Read the Data List according to the display on the GTS.

      Click here

      Body Electrical > Vehicle Proximity Notification System > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Permission Signal

      Vehicle proximity notification system permission signal

      OFF or ON

      OFF: Vehicle proximity notification system operation prohibited (engine is operating or shift lever is in P).

      ON: Vehicle proximity notification system operation permitted (engine is stopped and shift lever is not in P).

      -

      Body Electrical > Vehicle Proximity Notification System > Data List

      Tester Display

      Permission Signal

      OK

      The GTS display changes according to the engine status or the shift lever position.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

    Click here

    NG

    CHECK VEHICLE APPROACHING SPEAKER CONTROLLER (PERMISSION SIGNAL)Click here

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

    1. Disconnect the N39 vehicle approaching speaker controller connector.

    2. Disconnect the A108 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

      N39-3 (SP+) - A108-1

      Always

      Below 1 Ω

      N39-8 (SP-) - A108-2

      Always

      Below 1 Ω

      N39-3 (SP+) or A108-1 - Body ground

      Always

      10 kΩ or higher

      N39-8 (SP-) or A108-2 - Body ground

      Always

      10 kΩ or higher

      N39-3 (SP+) - N39-8 (SP-)

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER

    1. Disconnect the vehicle approaching speaker controller connector.

      C285783C12

      *a

      Front view of wire harness connector

      (to Vehicle Approaching Speaker Assembly)

      -

      -

    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

      A108-1 - A108-2

      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

  8. 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 hereClick hereClick here

    NG

    REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY

    Click here

  9. CHECK STOP LIGHT OPERATION

    1. Check that the stop lights come on when the brake pedal is depressed, and go off when the brake pedal is released.

      OK

      Stop lights illuminate properly.

    Result

    Result

    OK

    NG
    NG

    GO TO LIGHTING SYSTEM

    Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - STOP LIGHT SWITCH ASSEMBLY)

    1. Disconnect the N39 vehicle approaching speaker controller connector.

    2. Disconnect the A100 stop light switch assembly connector.

    3. Disconnect the G82 crtification ECU (smart key ECU assembly) connector.

    4. Disconnect the A110 brake booster with master cylinder assembly (skid control ECU) connector.

    5. Disconnect the G35 steering lock actuator assembly (steering lock ECU) connector.

    6. Disconnect the A109 stop light control ECU assembly connector.

    7. Disconnect the A65 hybrid vehicle control ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      N39-2 (STP) - A109-1 (OUT)

      Always

      Below 1 Ω

      N39-2 (STP) or A109-1 (OUT) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  11. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - COMBINATION METER ASSEMBLY)

    1. Disconnect the N39 vehicle approaching speaker controller connector.

    2. Disconnect the G16 combination meter assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      N39-6 (SPD) - G16-6 (+S)

      Always

      Below 1 Ω

      N39-6 (SPD) or G16-6 (+S) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK COMBINATION METER ASSEMBLY

    1. Reconnect the N39 vehicle approaching speaker controller connector.

      E273969C24

      *a

      Component with harness connected

      (Combination Meter Assembly)

      -

      -

    2. Reconnect the G16 combination meter assembly connector.

    3. Check the input waveform.

      1. Remove the combination meter assembly with the connector(s) still connected.

      2. Connect an oscilloscope to terminal G16-6 (+S) and body ground.

      3. Turn the power switch on (IG).

      4. Turn a wheel slowly.

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

        Item

        Condition

        Tester Connection

        G16-6 (+S) - Body ground

        Tool Setting

        5 V/DIV., 20 ms./DIV.

        Vehicle Condition

        Power switch on (IG), wheel being rotated

        OK

        The waveform is similar to that shown in the illustration.

        Tip:

        When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

    Click here

    NG

    GO TO METER / GAUGE SYSTEM

    Click here

  13. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER (PERMISSION SIGNAL)

    1. E195974C41

      *a

      Component with harness connected

      (Vehicle Approaching Speaker Controller)

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      N39-11 (KOK) - N39-7 (GND)

      Power switch on (READY), shift lever in P

      Below 2.3 V

      Power switch on (READY), engine stopped and shift lever not in P

      8 V or higher

    Result

    Result

    OK

    NG
    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

    Click here

    NG

  14. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER (PERMISSION SIGNAL)

    1. E298900C08

      *a

      Front view of wire harness connector

      (to Hybrid Vehicle Control ECU)

      Disconnect the hybrid vehicle control ECU connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      G193-7 (KOK) - Body ground

      Power switch on (IG)

      8 V or higher
      Note:

      After performing this procedure, connect the connector and clear the output DTCs.

      Click here

    Result

    Result

    OK

    NG
    OK

    REPLACE HYBRID VEHICLE CONTROL ECU

    Click here

    NG

  15. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - HYBRID VEHICLE CONTROL ECU)

    1. Disconnect the N39 vehicle approaching speaker controller connector.

    2. Disconnect the G193 hybrid vehicle control ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      N39-11 (KOK) - G193-7 (KOK)

      Always

      Below 1 Ω

      N39-11 (KOK) or G193-7 (KOK) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR