Buzzer does not Sound [12/2019 - 11/2023]: Procedure

1. Connect the GTS to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the GTS on.
4. Enter the following menus: Body Electrical / Blind Spot Monitor Slave / Data List.
5. Read the Data List according to the display on the GTS.

   Body Electrical > Blind Spot Monitor Slave > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Buzzer Connection	Connection status of the buzzer	Valid or Invalid	Valid: Connection Invalid: No connection	-
   Slave Side RCTA Function	Switches the RCTA function on and off	OFF or ON	OFF: RCTA function off ON: RCTA function on	-

   Body Electrical > Blind Spot Monitor Slave > Data List 

   Tester Display
   Buzzer Connection
   Slave Side RCTA Function

   Result

   Result	Proceed to
   "Valid" and "ON" is displayed for all items.	A
   "Invalid" or "OFF" is displayed.	B

Result: 

B 

REPLACE BLIND SPOT MONITOR SENSOR RH (A). Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

A 

See step  2

1. According to the display on the GTS, check for DTCs.

   Body Electrical > Blind Spot Monitor Slave > Clear DTCs 

2. According to the display on the GTS, check for DTCs.

   Body Electrical > Blind Spot Monitor Slave > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO BLIND SPOT MONITOR SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 11/2023] 

Result: 

OK 

See step  3

1. Disconnect the M45 RCTA buzzer (blind spot monitor buzzer) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to RCTA Buzzer (Blind Spot Monitor Buzzer))
   *b	Front view of wire harness connector (to Blind Spot Monitor Sensor RH (A))

2. Disconnect the M2 blind spot monitor sensor RH (A) connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   M45-1 (BZP) - Body ground	Ignition switch ON	11 to 14 V
   M45-2 (BZN) or M2-3 (BUZ) - Body ground	Ignition switch ON	Below 1 V
   M45-2 (BZN) - M45-1 (BZP)	Ignition switch ON	Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Disconnect the M45 RCTA buzzer (blind spot monitor buzzer) connector.
2. Disconnect the M2 blind spot monitor sensor RH (A) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M45-2 (BZN) - M2-3 (BUZ)	Always	Below 1 Ω
   M45-2 (BZN) or M2-3 (BUZ) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RCTA BUZZER (BLIND SPOT MONITOR BUZZER). Refer to  REMOVAL [12/2019 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR