Toyota Avalon (XX50) 2019-2022 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

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

Click here

OK:

RCTA buzzer sounds

OK

REPLACE BLIND SPOT MONITOR SENSOR LH

NG

(a) Turn the engine switch off.

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

(c) Recheck for DTCs and check if the same DTC is output again.

OK:

No DTCs are output.

NG

GO TO DTC CHART

OK

(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:

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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

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

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

Standard Resistance:

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

Standard Voltage:

OK

REPLACE RCTA BUZZER (BLIND SPOT MONITOR BUZZER)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR