Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001ATPO
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 - 08/2020]
Title: VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE PROXIMITY NOTIFICATION SYSTEM: Communication between Vehicle Proximity Notification System and Diagnostic Tool is not Possible; 2019 - 2020 MY Avalon Avalon HV [04/2018 - 08/2020]

Communication between Vehicle Proximity Notification System and Diagnostic Tool is not Possible

DESCRIPTION

The vehicle approaching speaker controller communicates with the Techstream through the DLC3.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

The vehicle approaching speaker controller and Techstream communicate using SIL communication.

PROCEDURE

1.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Health Check.

Result

Proceed to

Communication with the vehicle approaching speaker controller is possible

A

Communication with the vehicle approaching speaker controller is not possible

B

A

USE SIMULATION METHOD TO CHECK

B

2.

CHECK HARNESS AND CONNECTOR (IG POWER SOURCE - VEHICLE APPROACHING SPEAKER CONTROLLER)

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

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

G38-1 (IG) - Body ground

Power switch on (IG)

11 to 14 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - BODY GROUND)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G38-7 (GND) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

CHECK HARNESS AND CONNECTOR (DLC3 - VEHICLE APPROACHING SPEAKER CONTROLLER)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G45-7 (SIL) - G38-9 (PRST)

Always

Below 1 Ω

G45-7 (SIL) or G38-9 (PRST) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.

CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G45-4 (CG) - Body ground

Always

Below 1 Ω

OK

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR