VEHICLE PROXIMITY NOTIFICATION SYSTEM 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, engine oil pressure switch signals from the engine oil pressure switch assembly and P position switch signals from the transmission control ECU assembly, and produces the warning sound from the vehicle approaching speaker assembly.

WIRING DIAGRAM

B001LZ3E04

CAUTION / NOTICE / HINT

Note

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

    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 DIAGNOSTIC 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.

      Vehicle Proximity Notification System
      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
      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.

      Vehicle Proximity Notification System
      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

      		 -
      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.

      Vehicle Proximity Notification System
      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 -
      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 (Oil Pressure 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.

      Vehicle Proximity Notification System
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Oil Pressure SW Oil pressure switch/OFF or ON

      OFF: Engine started

      ON: Engine not started

      		 -
      Result
      Result Proceed to
      The GTS display changes according to engine operation A
      The GTS display does not change according to engine operation B

    B

    CHECK ENGINE OIL PRESSURE SWITCH ASSEMBLY (INPUT SIGNAL) Click here

    A

  6. READ VALUE USING GTS (Shift Position)


    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.

      Vehicle Proximity Notification System
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Shift Position P position switch/Not Parking or Parking Not Parking or Parking -
      Result
      Result Proceed to
      The GTS display changes according to the selected shift state A
      The GTS display does not change according to the selected shift state B

    A

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    B

  7. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER

    B001M3TC01
    *a

    Front view of wire harness connector

    (to Transmission Control ECU Assembly)

    1. Disconnect the A21 transmission control ECU assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A21-20 (IND) - Body ground Power switch on (IG) 8 V or higher
      power switch off Below 1 V

    NG

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

    OK

  8. CHECK TRANSMISSION CONTROL ECU ASSEMBLY

    B001M25C01
    *a

    Component with harness connected

    (Transmission Control ECU Assembly)

    1. Connect the A21 transmission control ECU assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A21-20 (IND) - Body ground Power switch on (IG), park (P) selected Below 2.5 V
      Power switch on (IG), park (P) not selected 8 V or higher

    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    NG

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

  9. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - TRANSMISSION CONTROL ECU ASSEMBLY)


    1. Disconnect the H183 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
      H183-11 (SFTP) - A21-20 (IND) Always Below 1 Ω
      H183-11 (SFTP) or A21-20 (IND) - Body ground Always 10 kΩ or higher

    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. CHECK ENGINE OIL PRESSURE SWITCH ASSEMBLY (INPUT SIGNAL)

    B001MXZC01
    *a

    Front view of wire harness connector

    (to Vehicle Approaching Speaker Controller)

    1. Disconnect the H183 vehicle approaching speaker controller connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H183-12 (OPSW) - Body ground Idling* 8 V or higher
      Power switch on (IG) Below 2 V

      Tech Tips

      *: Put the engine in inspection mode.

      Click here


    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    NG

  11. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - ENGINE OIL PRESSURE SWITCH ASSEMBLY)


    1. Disconnect the D25 engine oil pressure switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H183-12 (OPSW) - D25-1 Always Below 1 Ω
      H183-12 (OPSW) or D25-1 - Body ground Always 10 kΩ or higher

    OK

    REPLACE ENGINE OIL PRESSURE SWITCH ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. Disconnect the H183 vehicle approaching speaker controller connector.

    2. Disconnect the H19 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H183-6 (SPD) - H19-40 (+S) Always Below 1 Ω
      H183-6 (SPD) or H19-40 (+S) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. CHECK COMBINATION METER ASSEMBLY

    B001MLGC01
    *a

    Component with harness connected

    (Combination Meter Assembly)

    1. Connect the H183 vehicle approaching speaker controller connector.

    2. Connect the H19 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 H19-40 (+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.


    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    NG

    GO TO METER / GAUGE SYSTEM Click here

  14. 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

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

  15. CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY - VEHICLE APPROACHING SPEAKER CONTROLLER)


    1. Disconnect the A27 stop light control relay connector.

    2. Disconnect the H183 vehicle approaching speaker controller connector.

    3. Disconnect each ECU and stop light connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A27-1 (OUT) - H183-2 (STP) Always Below 1 Ω
      A27-1 (OUT) or H183-2 (STP) - Body ground Always 10 kΩ or higher

    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  16. 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

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


    1. Disconnect the H183 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
      H183-3 (SP+) - A82-1 (+) Always Below 1 Ω
      H183-8 (SP-) - A82-2 (-) Always Below 1 Ω
      H183-3 (SP+) or A82-1 (+) - Body ground Always 10 kΩ or higher
      H183-8 (SP-) or A82-2 (-) - Body ground Always 10 kΩ or higher

    OK

    REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR