There is No Sound Made [07/2022 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Acoustic Vehicle Alerting System / Trouble Codes.

   Body Electrical > Acoustic Vehicle Alerting System > Trouble Codes 

5. Check for DTCs.

   Result

   Result	Proceed to
   DTC B1350 is not output	A
   DTC B1350 is output	B

Result: 

B 

GO TO DTC CHART B1350. Refer to  DTC B1350: Speaker Circuit [07/2022 - ]  

Result: 

A 

See step  2

1. Turn the power switch off.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Body Electrical / Acoustic Vehicle Alerting System / Active Test.
6. Perform the Active Test according to the display on the Techstream.

   Body Electrical > Acoustic Vehicle Alerting System > Active Test 

   Tester Display	Measurement Item	Type	Control Range
   Proximity Sound (Vehicle Stationary)	0 km/h (0 mph) vehicle proximity warning sound	OFF or ON	Produces warning sound when vehicle is stopped

   Body Electrical > Acoustic Vehicle Alerting 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

Result: 

A 

REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY. Refer to  REMOVAL [07/2022 - ] 

Result: 

B 

See step  3

1. Disconnect the F142 vehicle approaching speaker controller connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Vehicle Approaching Speaker Controller)

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   F142-1 (IG) - Body ground	Power switch on (IG)	11 to 14 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F142-6 (GND) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY. Refer to  REMOVAL [08/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR