Toyota Yaris: Pre-collision System / Fail-safe Chart

"Pre-Collision System Malfunction Visit Your Dealer"

Pre-collision system malfunction

C142571

The ignition switch is turned ON after an abnormal stop light relay signal is no longer received from the skid control ECU (brake actuator assembly).

U010087

Communication with the ECM returns to normal.

U010187

Communication with the transmission control ECU returns to normal.

U012687

Communication with the steering sensor returns to normal.

U012987

Communication with the skid control ECU (brake actuator assembly) returns to normal.

U015587

Communication with the combination meter assembly returns to normal.

U023A87

Communication with the forward recognition camera returns to normal.

U030051

3 seconds or more elapse after the vehicle information of the millimeter wave radar sensor assembly is acquired from the ECM.

U030057

The vehicle information stored in the millimeter wave radar sensor assembly and the vehicle information sent from the ECM match.

U041881

The ignition switch is turned ON after a signal indicating a brake system malfunction is no longer received from the skid control ECU (brake actuator assembly).

"Pre-Collision System Malfunction Visit Your Dealer"

Pre-collision system malfunction

X2000

The ignition switch is turned ON after a signal for indicating a malfunction of the skid control ECU (brake actuator assembly) or yaw rate sensor (airbag ECU assembly) is no longer received.

X2001

The ignition switch is turned ON after a signal indicating a malfunction of the steering sensor is no longer received from the steering angle sensor.

X2002

An SFI system malfunction signal is no longer received from the ECM.

X2003

A signal indicating an vehicle stability control system malfunction is no longer received from the skid control ECU (brake actuator assembly).

X2012

The ignition switch is turned ON after it is determined that the forward recognition camera is no longer malfunctioning.

X2013

The ignition switch is turned ON after it is determined that the optical axis of the forward recognition camera is no longer misaligned.

X2014

It is determined that the forward recognition camera optical axis is calibrated.

X2018

The ignition switch is turned ON after it is determined that the heater of the forward recognition camera is no longer malfunctioning.

X2020

The system stops receiving destination malfunction signals from the millimeter wave radar sensor assembly.

X2021

The ignition switch is turned ON after a signal from the millimeter wave radar sensor assembly indicating a malfunction is no longer received.

X2022

The ignition switch is turned ON after a signal from the millimeter wave radar sensor assembly indicating beam axis misalignment is no longer received.

"Pre-Collision System Malfunction Visit Your Dealer"

Pre-collision system malfunction

X2023

A signal from the millimeter wave radar sensor assembly indicating that beam axis has not been calibrated is no longer received.

X202A

The destination not programmed signal is no longer received from the millimeter wave radar sensor assembly.

X203E

The signal indicating communication malfunction with the power steering ECU assembly is no longer received.

X2074

The signal from the power steering ECU assembly indicating communication malfunction with the millimeter wave radar sensor assembly is no longer received.

X2081

After the ignition switch is turned from off to ON, the signal indicating power steering system steering assist unavailable is no longer received from the power steering ECU assembly.

X2082

After the ignition switch is turned from off to ON, the signal indicating steering assist angle malfunction is no longer received from the power steering ECU assembly.

XF01B

After ECU security key update performed.

"Pre-Collision System Radar In Self Calibration Unavailable See Owner's Manual"

Millimeter wave radar sensor vertical axis misalignment

X2024

Millimeter wave radar sensor beam axis adjustment is completed and beam axis learning is completed

"Pre-Collision System Radar Sensor Blocked Unavailable Clean Radar Sensor"

Foreign matter attached to millimeter wave radar sensor assembly

X2026

Millimeter wave radar sensor assembly is cleaned

"Pre-Collision System Out of Temperature Range Unavailable See Owner's Manual"

Millimeter wave radar sensor assembly temperature malfunction

X2027

Millimeter wave radar sensor temperature returns to normal

"Pre-Collision System Unavailable See Owner's Manual"

Millimeter wave radar sensor assembly low voltage malfunction

X2028

Millimeter wave radar sensor voltage returns to normal

Front Radar Sensor Temporary Unavailable (Radio Wave Interference)

X202B

The vehicle is moved to a location without radio frequency interference.

HINT:

If the system does not return to normal even after moving the vehicle to a different location, there may be a problem with the steering center position. Inspect the steering system components for incorrect installation, deformation, or damage, and perform calibration or replace components as necessary.

"Front Camera Low Visibility Unavailable See Owner's Manual"

Forward recognition camera or area of the windshield in front of the camera is dirty or fogged up

X2015

Forward recognition camera or area of windshield glass in front of forward recognition camera is cleaned or defogged

"Front Camera Out of Temperature Range Unavailable Wait until Normal Temperature"

Forward recognition camera temperature outside of operational range

X2016

Forward recognition camera temperature returns to normal

"Front Camera Unavailable See Owner's Manual"

Forward recognition camera voltage outside of operational range

X2017

Forward recognition camera voltage returns to normal