Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000024XS9
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: ACOUSTIC VEHICLE ALERTING SYSTEM: ACOUSTIC VEHICLE ALERTING SYSTEM: B135013,B135019; Acoustic Vehicle Alerting Speaker Circuit Open; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]

DTC

B135013

Acoustic Vehicle Alerting Speaker Circuit Open

DTC

B135019

Acoustic Vehicle Alerting Speaker Circuit Current Above Threshold

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 or vehicle approaching speaker controller.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B135013

Acoustic Vehicle Alerting Speaker Circuit Open

Detection condition:

  1. The ignition switch is ON.
  2. Power source voltage is 10 V or more.

Malfunction status:

  • When ECU output sound signal is being monitored with warning sound not being output, a speaker circuit open, short or short to ground is detected.

Malfunction duration:

  • 5 seconds or more
  • Vehicle approaching speaker controller
  • Vehicle approaching speaker assembly
  • Harness or connector

B135019

Acoustic Vehicle Alerting Speaker Circuit Current Above Threshold

Detection condition:

  1. The ignition switch is ON.
  2. Power source voltage is 9 V or more.

Malfunction status:

  • When vehicle proximity warning sound output conditions are met, an internal malfunction is continuously detected in the vehicle approaching speaker controller.

Malfunction duration:

  • 1 second or more
  • Vehicle approaching speaker controller
  • Vehicle approaching speaker assembly
  • Harness or connector

WIRING DIAGRAM

PROCEDURE

1.

INSPECT VEHICLE APPROACHING SPEAKER ASSEMBLY

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; ACOUSTIC VEHICLE ALERTING 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 I158 vehicle approaching speaker controller connector.

(b) Disconnect the A169 vehicle approaching speaker assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A169-2 (+) - I158-3 (SP+)

Always

Below 1 Ω

A169-1 (-) - I158-4 (SP-)

Always

Below 1 Ω

A169-2 (+) or I158-3 (SP+) - Body ground

Always

10 kΩ or higher

A169-1 (-) or I158-4 (SP-) - Body ground

Always

10 kΩ or higher

A169-1 (-) - A169-2 (+)

Always

10 kΩ or higher
OK

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR