Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Speaker Circuit (B1350)

DESCRIPTION

The vehicle approaching speaker assembly circuit consists of the vehicle approaching speaker controller and vehicle approaching speaker assembly.

This DTC is stored when a malfunction is detected in the vehicle approaching speaker assembly circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1350

Speaker Circuit

Either of the following conditions is met:

When sound output voltage is being monitored by the ECU, with the power switch on (IG), auxiliary battery voltage 10 V or more, and warning sound being produced, a speaker circuit short condition continues for 1 second or more.
When sound output voltage is being monitored by the ECU, with the power switch on (IG) and warning sound not being produced, a speaker circuit open condition continues for 5 seconds or more.

WIRING DIAGRAM

PROCEDURE

1.	INSPECT VEHICLE APPROACHING SPEAKER ASSEMBLY

(a) Remove the vehicle approaching speaker assembly.

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(b) Inspect the vehicle approaching speaker assembly.

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REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY

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

(a) Disconnect the G38 vehicle approaching speaker controller connector.

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

Standard Resistance:

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

REPAIR OR REPLACE HARNESS OR CONNECTOR

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Toyota Avalon (XX50) 2019-2022 Owners Manual