Toyota Avalon Service & Repair Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • If any of the following symptoms exist despite the normal system code being output when checking for CAN communication and lane departure alert system (w/ steering control) DTCs, check the suspected areas in the order they are listed.
  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Lane Departure Alert System (w/ Steering Control)

Symptom

Suspected Area

Link

Lane departure alert system (w/ steering control) does not operate

Steering pad switch circuit

CAN communication system

Driving support ECU assembly

Forward recognition camera

The lane departure alert indicator does not illuminate even when the lane departure alert main switch is operated.

Indicator circuit

Steering pad switch circuit

CAN communication system

Combination meter assembly

Forward recognition camera

Driving support ECU assembly

The lane departure alert indicator does not turn off even when the lane departure alert main switch is operated.

Indicator circuit

Steering pad switch circuit

CAN communication system

Combination meter assembly

Driving support ECU assembly

Forward recognition camera

Lane departure alert system (w/ steering control) is not canceled even when turn signal light switch is operated

Data List/Active Test

(Check turn signal switch signal)

Turn signal switch circuit (w/ Cornering Light)

Turn signal switch circuit (w/o Cornering Light)

Forward recognition camera

Increase in cases that driver can see lane markers but system cannot detect lane markers

Windshield glass is dirty

-

Forward recognition camera is dirty

-

Headlight assemblies are dirty or worn

-

Non-standard suspension is installed

-

Non-standard tires are installed

-

Non-Toyota genuine windshield glass is installed

-

There is a foreign object or foreign matter between the windshield glass and forward recognition camera

-

A sticker or similar item is attached to the area in front of the forward recognition camera

-

Adjust forward recognition camera

Forward recognition camera

Lane departure alert system (w/ steering control) is operating, but no operation condition is displayed on multi-information display in combination meter assembly

Data List/Active Test

(Check the item LDA Control)

Combination meter assembly

Forward recognition camera

Buzzer does not sound even when vehicle deviates from its lane.

Combination meter assembly

Forward recognition camera

    Precaution

    Steering Pad Switch Circuit

    See More:

    Toyota Avalon Owners Manual > Steps to take in an emergency: If the electronic key does not operate properly
    If communication between the electronic key and vehicle is interrupted or the electronic key cannot be used because the battery is depleted, the smart key system and wireless remote control cannot be used. In such cases, the doors and trunk can be opened and the engine can be started by following t ...

    Toyota Avalon Owners Manual

    Toyota Avalon Service & Repair Manual

    © 2024 Copyright www.tavalon.net
    0.0251