Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Diagnosis System

DIAGNOSIS SYSTEM

CHECK DLC3

(a) Check the DLC3.

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FUNCTION OF WARNING INDICATOR AND MESSAGE

(a) If the pre-collision system is not functioning properly, the driver is warned by the PCS warning light and a warning message displayed on the multi-information display.

Master Warning Indicator

Warning Message

Detail

DTC

PCS warning light

Illuminated

"Pre-Collision System Malfunction Visit Your Dealer" is displayed

Pre-collision system malfunctioning

Stored

Illuminates

Not illuminated

"Pre-Collision System Unavailable"

  • Millimeter wave radar sensor assembly misaligned
  • Millimeter wave radar sensor assembly temperature malfunction
  • Millimeter wave radar sensor assembly low voltage malfunction

Not stored

Illuminates

Not illuminated

"Pre-Collision System Unavailable Clean Sensor"

Foreign matter attached to millimeter wave radar sensor assembly

Not stored

Illuminates

Not illuminated

"Front Camera Unavailable"

  • Abnormal forward recognition camera voltage
  • Forward recognition camera temperature outside of operational range
  • Other forward recognition camera malfunction

Not stored

Illuminates

Not illuminated

"Front Camera Unavailable Remove Debris On Windshield"

Front of forward recognition camera or windshield glass is dirty or misty

Not stored

Illuminates

Not illuminated

"VSC Turned Off Pre-Collision Brake System Unavailable"

VSC system is disabled

Not stored

Illuminates

PCS Warning Light Illumination Status

PCS Warning Light

Condition

Illuminates

Pre-collision system malfunctioning (DTC stored)

Pre-collision system temporarily disabled

Pre-collision system disabled

VSC system disabled

Not illuminated

Other

INITIAL CHECK

(a) An initial check is performed when the engine switch is off for more than 2 seconds and then turned on (IG). The initial check consists of a pre-collision system diagnostic check with a duration of approximately 3 seconds.

(b) If a malfunction is detected during the initial check, the PCS warning light in the combination meter assembly will illuminate and a warning message indicating the pre-collision system is malfunctioning or disabled will be displayed on the multi-information display.

CONSTANT CHECK

(a) The driving support ECU assembly constantly monitors the pre-collision system for malfunctions after the engine switch is turned on (IG) and the initial check (approximately 3 seconds) has completed.

(b) If a malfunction is detected during the constant check, the PCS warning light in the combination meter assembly will illuminate and a warning message indicating the pre-collision system is malfunctioning or disabled will be displayed on the multi-information display.

    Data List / Active Test

    Diagnostic Trouble Code Chart

    See More:

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