Toyota Avalon Service & Repair Manual: Buzzer does not Sound

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When checking for DTCs, make sure that the blind spot monitor system is turned on.
Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.	CHECK RCTA BUZZER (BLIND SPOT MONITOR BUZZER)

(a) Check that the RCTA buzzer (blind spot monitor buzzer) sounds when the initial check is performed.

Click here

OK:

RCTA buzzer sounds

REPLACE BLIND SPOT MONITOR SENSOR LH

CHECK DTC

(a) Turn the engine switch off.

(b) Turn the engine switch on (IG).

Body Electrical > Blind Spot Monitor Slave > Trouble Codes

OK:

No DTCs are output.

GO TO DTC CHART

3.	CHECK HARNESS AND CONNECTOR (RCTA BUZZER - BLIND SPOT MONITOR SENSOR LH)

(a) Disconnect the K22 RCTA buzzer (blind spot monitor buzzer) connector.

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

Standard Voltage:

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK HARNESS AND CONNECTOR (RCTA BUZZER - BLIND SPOT MONITOR SENSOR LH AND BATTERY)

(a) Disconnect the K22 RCTA buzzer (blind spot monitor buzzer) connector.

(b) Disconnect the P6 blind spot monitor sensor LH connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K22-2 (BZN) - P6-3 (BUZ)	Always	Below 1 Ω
K22-2 (BZN) or P6-3 (BUZ) - Body ground	Always	10 kΩ or higher

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

Standard Voltage:

REPLACE RCTA BUZZER (BLIND SPOT MONITOR BUZZER)

REPAIR OR REPLACE HARNESS OR CONNECTOR

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Toyota Avalon Owners Manual