Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001ATPX
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 - 08/2020]
Title: VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE PROXIMITY NOTIFICATION SYSTEM: B1350; Speaker Circuit; 2019 - 2020 MY Avalon Avalon HV [04/2018 - 08/2020]

DTC

B1350

Speaker Circuit

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.
  • Vehicle approaching speaker controller
  • Vehicle approaching speaker assembly
  • Harness or connector

WIRING DIAGRAM

PROCEDURE

1.

INSPECT VEHICLE APPROACHING SPEAKER ASSEMBLY

(a) Remove the vehicle approaching speaker assembly.

Click here 2019 - 2020 MY Avalon Avalon HV [04/2018 - 08/2020]; VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE APPROACHING SPEAKER: REMOVAL

(b) Inspect the vehicle approaching speaker assembly.

Click here 2019 - 2020 MY Avalon Avalon HV [04/2018 - 08/2020]; VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE APPROACHING SPEAKER: INSPECTION

NG

REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY

OK

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:

Tester Connection

Condition

Specified Condition

A7-1 (+) - G38-3 (SP+)

Always

Below 1 Ω

A7-2 (-) - G38-8 (SP-)

Always

Below 1 Ω

A7-1 (+) or G38-3 (SP+) - Body ground

Always

10 kΩ or higher

A7-2 (-) or G38-8 (SP-) - Body ground

Always

10 kΩ or higher
OK

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR