PRE-COLLISION: PRE-COLLISION SYSTEM (for HV Model): DIAGNOSIS SYSTEM; 2019 - 2021 MY Avalon HV [04/2018

Last Modified: 08-21-2023	6.11:8.1.0	Doc ID: RM100000001BE56
Model Year Start: 2019	Model: Avalon HV	Prod Date Range: [04/2018 - 08/2021]
Title: PRE-COLLISION: PRE-COLLISION SYSTEM (for HV Model): DIAGNOSIS SYSTEM; 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]

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 power 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 power 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.