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 and "permission signals*" from the hybrid vehicle control ECU, and produces the warning sound from the vehicle approaching speaker assembly.

*: Permission signals

Tech Tips


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

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

WIRING DIAGRAM

B002HKNE01

CAUTION / NOTICE / HINT

Note


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

  • Make sure that the vehicle approaching speaker switch is not pressed.

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 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. 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 OPERATION Click 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 GTS (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 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

  7. 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

  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 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 A67 vehicle approaching speaker controller connector.

    2. Disconnect the A1 stop light switch assembly connector.

    3. Disconnect the A60 hybrid vehicle control ECU connector.

    4. Disconnect the I22 shift lock control unit assembly (shift lock control ECU) connector.

    5. Disconnect the A57 brake booster with master cylinder assembly connector.

    6. Disconnect the I51 certification ECU (smart key ECU assembly) connector.

    7. Disconnect the I19 driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A67-2 (STP) - A1-2 (L) Always Below 1 Ω
      A67-2 (STP) or A1-2 (L) - 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 A67 vehicle approaching speaker controller connector.

    2. Disconnect the I10 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A67-6 (SPD) - I10-19 (+S) Always Below 1 Ω
      A67-6 (SPD) or I10-19 (+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

    B002IL7C23
    *a

    Component with harness connected

    (Combination Meter Assembly)

    		 - -

    1. Check the input waveform.


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

        Click here

      2. Connect an oscilloscope to terminal I10-19 (+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
        Tester Connection I10-19 (+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.

        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

  13. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER (PERMISSION SIGNAL)


    1. B002JI5C36
      *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
      A67-11 (KOK) - A67-7 (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. B002IJ8C06
      *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
      I115-7 (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 A67 vehicle approaching speaker controller connector.

    2. Disconnect the I115 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
      A67-11 (KOK) - I115-7 (KOK) Always Below 1 Ω
      A67-11 (KOK) or I115-7 (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