Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: There is No Sound Made

Toyota Corolla Cross (2022-2025) Service Manual / Vehicle Exterior / Acoustic Vehicle Alerting System / Acoustic Vehicle Alerting System / There is No Sound Made

DESCRIPTION

Based on signals received from each ECU, the vehicle approaching speaker controller outputs warning sounds through the vehicle approaching speaker assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • The acoustic vehicle alerting system uses the CAN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting.

    Click here

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Acoustic Vehicle Alerting System > Trouble Codes

Result

Proceed to

B135013 and B135019 are not output

A

B135013 and B135019 is output

B
B

GO TO DTC CHART

A

2.

PERFORM ACTIVE TEST USING GTS

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Acoustic Vehicle Alerting System > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Proximity Sound (20km/h,12MPH)

20 km/h (12 mph) vehicle proximity warning sound

OFF or ON

-
Body Electrical > Acoustic Vehicle Alerting System > Active Test

Tester Display

Proximity Sound (20km/h,12MPH)

Result

Proceed to

The warning sound is produced

A

The warning sound is not produced

B
A

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

B

3.

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

(a) Disconnect the I256 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

I256-7 (+B) - Body ground

Ignition switch off

11 to 14 V

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I256-12 (GND) - Body ground

Always

Below 1 Ω
OK

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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