PRE-COLLISION: PRE-COLLISION SYSTEM: U032851,U032857; Software Incompatibility with Steering Angle Sensor Module Not Programmed; 2022 MY Avalon Avalon HV [08/2021

DESCRIPTION

Information sent from the steering sensor indicating whether the vehicle is equipped with the variable gear ratio steering system is received by the forward recognition camera via CAN communication.
When the vehicle information cannot be confirmed using the information sent from the steering sensor indicating whether the vehicle is equipped with the variable gear ratio steering system, the forward recognition camera stores DTC U032851.
When the information value sent from the steering sensor indicating whether the vehicle is equipped with the variable gear ratio steering system does not match that stored by the forward recognition camera, the forward recognition camera stores DTC U032857.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U032851

Software Incompatibility with Steering Angle Sensor Module Not Programmed

When the ignition switch is ON for 3 seconds or more, the vehicle information of the forward recognition camera cannot be confirmed for approximately 7 seconds or more using the information sent from the steering sensor indicating whether the vehicle is equipped with the variable gear ratio steering system.

Steering sensor
Forward recognition camera

U032857

Software Incompatibility with Steering Angle Sensor Module Invalid/Incompatible Software Component

When the ignition switch is ON for 3 seconds or more, the information value sent from the steering sensor indicating whether the vehicle is equipped with the variable gear ratio steering system does not match that stored by the forward recognition camera for approximately 4 seconds or more.

Steering sensor
Forward recognition camera

CAUTION / NOTICE / HINT

NOTICE:

When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
When the forward recognition camera is replaced with a new one or the windshield glass is replaced or removed/installed, make sure to read Before Starting Adjustment, then perform optical axis alignment for the forward recognition camera and clear the vehicle control history for each system.
HINT:

Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment.

One Time Recognition: Click here

Sequential Recognition: Click here

Driving Adjustment: Click here

PROCEDURE

Body Electrical > Pre-Collision System > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

VGRS ECU Equipped Information

Variable gear ratio steering system function availability

Unknown, Absence or Presence

Unknown: Vehicle information not confirmed

Absence: Variable gear ratio steering system absence

Presence: Variable gear ratio steering system presence

Body Electrical > Pre-Collision System > Data List

Tester Display

VGRS ECU Equipped Information

HINT:

When the specification stored by the forward recognition camera and the vehicle specification do not match, there is a malfunction in the specification information stored by the forward recognition camera. Therefore, replace the forward recognition camera.
When the specification stored by the forward recognition camera and the vehicle specification match, an steering sensor with different specifications may be installed. Therefore, replace the steering sensor.

Result

Proceed to

Specification stored by the forward recognition camera and vehicle specification do not match

Specification stored by the forward recognition camera and vehicle specification match