VEHICLE PROXIMITY NOTIFICATION SYSTEM There is No Sound Made

DESCRIPTION

The vehicle approaching speaker controller receives stop light switch signals from the No. 3 semiconductor power integration ECU, vehicle speed signals from the combination meter assembly and permission signals from the hybrid vehicle control ECU assembly, and produces the warning sound from the vehicle approaching speaker assembly.

WIRING DIAGRAM

B000O0NE10

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Turn the power switch off.

    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 / Trouble Codes.


      Body Electrical > Vehicle Proximity Notification System > Trouble Codes

    6. Check for DTCs.

      Result
      Result Proceed to
      DTC B1350 is not output A
      DTC B1350 is output B
      Communication with the GTS is not possible C

    B

    GO TO DTC CHART 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. Turn the power switch off.

    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)
      Result
      Result Proceed to
      The warning sound is produced A
      The warning sound is not produced B

    B

    INSPECT VEHICLE APPROACHING SPEAKER ASSEMBLY Click here

    A

  3. READ VALUE USING GTS (Stop Light SW)


    1. Turn the power switch off.

    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 / Data List.

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


      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
      Result
      Result Proceed to
      The GTS display changes according to brake pedal operation A
      The GTS display does not change according to brake pedal operation B

    B

    CHECK STOP LIGHT OPERATION Click here

    A

  4. READ VALUE USING GTS (Vehicle Speed)


    1. Turn the power switch off.

    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 / Data List.

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


      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
      Result
      Result Proceed to
      The GTS display changes according to the vehicle speed A
      The GTS display does not change according to the vehicle speed B

    B

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

    A

  5. READ VALUE USING GTS (Permission Signal)


    1. Turn the power switch off.

    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 / Data List.

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


      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 state park (P)).

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

      		 -

      Body Electrical > Vehicle Proximity Notification System > Data List
      Tester Display
      Permission Signal
      Result
      Result Proceed to
      The GTS display changes according to the engine status or the selected shift state. A
      The GTS display does not change according to the engine status or the selected shift state. B

    A

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    B

  6. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER (PERMISSION SIGNAL)


    1. B000SH7C50
      *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
      X51-11 (KOK) - Body ground Power switch on (READY), shift state park (P) Below 2.3 V
      Power switch on (READY), engine stopped and shift state not park (P) 8 V or higher
      Result
      Result
      OK
      NG

    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    NG

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


    1. Disconnect the X51 vehicle approaching speaker controller connector.

    2. Disconnect the P64 hybrid vehicle control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X51-11 (KOK) - P64-8 (KOK) Always Below 1 Ω
      X51-11 (KOK) or P64-8 (KOK) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER


    1. Replace the vehicle approaching speaker controller with a new or known good one.

      Click here

      OK
      The operation of the vehicle proximity notification system returns to normal.
      Result
      Proceed to
      OK
      NG

    OK

    END (VEHICLE APPROACHING SPEAKER CONTROLLER WAS DEFECTIVE)

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

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


    1. Disconnect the X51 vehicle approaching speaker controller connector.

    2. Disconnect the P25 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X51-6 (SPD) - P25-19 (+S) Always Below 1 Ω
      X51-6 (SPD) or P25-19 (+S) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK COMBINATION METER ASSEMBLY


    1. Reconnect the X51 vehicle approaching speaker controller connector.

    2. Reconnect the P25 combination meter assembly connector.

    3. B000TI9C12
      *a

      Component with harness connected

      (Combination Meter Assembly)

      Check the input waveform.


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

      2. Connect an oscilloscope to terminal P25-19 (+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
        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.

        Tech Tips

        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

  11. 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
      Condition Illumination Condition
      Brake pedal depressed On
      Brake pedal released Off
      Result
      Result
      OK
      NG

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


    1. Disconnect the X51 vehicle approaching speaker controller connector.

    2. Disconnect the X99 No. 3 semiconductor power integration ECU connector.

    3. Disconnect the X70 rear combination light assembly LH connector.

    4. Disconnect the X69 rear combination light assembly RH connector.

    5. Disconnect the X64 center stop light assembly connector.

    6. Disconnect the X7 radio setting condenser connector.

    7. Disconnect the A9 skid control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X51-2 (STP) - X99-1 (OUT) Always Below 1 Ω
      X51-2 (STP) or X99-1 (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

  13. INSPECT 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

    NG

    REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY Click here

    OK

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


    1. Disconnect the X51 vehicle approaching speaker controller connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X51-3 (SP+) - A33-1 (+) Always Below 1 Ω
      X51-8 (SP-) - A33-2 (-) Always Below 1 Ω
      X51-3 (SP+) or A33-1 (+) - Body ground Always 10 kΩ or higher
      X51-8 (SP-) or A33-2 (-) - 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