VEHICLE PROXIMITY NOTIFICATION SYSTEM There is No Sound Made

DESCRIPTION

The vehicle approaching speaker controller receives stop light switch signals from the engine room junction block 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 main body ECU (multiplex network body ECU), and produces the warning sound from the vehicle approaching speaker assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK DTC OUTPUT

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

   4. Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Trouble Codes.

   5. 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. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

   4. Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Active Test.

   5. Perform the Active Test according to the display on the GTS.

      Vehicle Proximity Notification System

      Tester Display	Test Part	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. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

   4. Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Data List.

   5. 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 condition / 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. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

   4. Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Data List.

   5. 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. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

   4. Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Data List.

   5. 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 condition / OFF or ON	OFF: Engine started ON: Engine not started	-

      Result
      Result Proceed to The GTS display changes according to the engine status or the shift lever position A The GTS display does not change according to the engine status or the shift lever position B

   
   

   A

   REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

   B

6. READ VALUE USING GTS (Shift Position)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

   4. Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Data List.

   5. 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: Shift lever is not in P Parking: Shift lever is in P	-

      Result
      Result Proceed to The GTS display changes according to the engine status or the shift lever position A The GTS display does not change according to the engine status or the shift lever position B

   
   

   A

   REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

   B

7. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER

   

   *a	Front view of wire harness connector (to Main Body ECU (Multiplex Network Body ECU))

   
   

   1. Disconnect the H10 main body ECU (multiplex network body ECU) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition H10-3 (SFTP) - Body ground Power switch on (IG) 11 to 14 V Power switch off Below 1 V

      Result
      Proceed to OK NG

   
   

   NG

   CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) Click here

   OK

8. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

   

   *a	Component with harness connected (Main Body ECU (Multiplex Network Body ECU))

   
   

   1. Reconnect the H10 main body ECU (multiplex network body ECU) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition H10-3 (SFTP) - Body ground Power switch on (IG), shift lever in P Below 2.5 V Power switch on (IG), shift lever not in P 8 V or higher

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER Click here

   NG

   REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

9. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

   
   

   1. Disconnect the H216 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 H216-11 (SFTP) - H10-3 (SFTP) Always Below 1 Ω H216-11 (SFTP) or H10-3 (SFTP) - 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

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

    
    

    1. Disconnect the H216 vehicle approaching speaker controller connector.

    2. Disconnect the H14 combination meter assembly connector.

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

       Standard Resistance
       Tester Connection Condition Specified Condition H216-6 (SPD) - H14-19 (+S) Always Below 1 Ω H216-6 (SPD) or H14-19 (+S) - Body ground Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

11. CHECK ENGINE OIL PRESSURE SWITCH ASSEMBLY

    

    *a	Component with harness connected (Combination Meter Assembly)

    
    

    1. Reconnect the H216 vehicle approaching speaker controller connector.

    2. Reconnect the H14 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 H14-19 (+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

12. 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

13. CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - VEHICLE APPROACHING SPEAKER CONTROLLER)

    
    

    1. Disconnect the H216 vehicle approaching speaker controller connector.

    2. Disconnect the 1F engine room junction block assembly connector.

    3. Disconnect the P15 noise filter connector.

    4. Disconnect the U13 rear combination light assembly LH connector.

    5. Disconnect the U12 rear combination light assembly RH connector.

    6. Disconnect the P13 center stop light set connector.

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

       Standard Resistance
       Tester Connection Condition Specified Condition 1F-11 (STOP) - H216-2 (STP) Always Below 1 Ω 1F-11 (STOP) or H216-2 (STP) - 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

14. 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

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

    
    

    1. Disconnect the H216 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 A11-1 (+) - H216-3 (SP+) Always Below 1 Ω A11-2 (-) - H216-8 (SP-) Always Below 1 Ω A11-1 (+) or H216-3 (SP+) - Body ground Always 10 kΩ or higher A11-2 (-) or H216-8 (SP-) - 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