POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): U0100,U0126,U0129,U0132,U023A; Lost Communication with ECM / PCM "A"; 2019 - 2022 MY Avalon [04/2018

Last Modified: 08-21-2023	6.11:8.1.0	Doc ID: RM100000001B1W4
Model Year Start: 2019	Model: Avalon	Prod Date Range: [04/2018 - ]
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): U0100,U0126,U0129,U0132,U023A; Lost Communication with ECM / PCM "A"; 2019 - 2022 MY Avalon [04/2018 - ]

DTC

U0100

Lost Communication with ECM / PCM "A"

DTC

U0126

Lost Communication With Steering Angle Sensor Module

DTC

U0129

Lost Communication with Brake System Control Module

DTC

U0132

Lost Communication with Ride Level Control Module

DTC

U023A

Lost Communication with Front Camera Module

DESCRIPTION

The power steering ECU (rack and pinion power steering gear assembly) receives signals from the ECM, steering sensor, skid control ECU (brake actuator assembly), AVS ECU (absorber control ECU) and forward recognition camera via CAN communication.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Return-to-normal Condition	Note
U0100	Lost Communication with ECM / PCM "A"	Lost communication with ECM	CAN communication system ECM Rack and pinion power steering gear assembly	EPS warning light: When an error occurs during steering assist, the warning light does not illuminate. For errors that occur before assist (at the time of the decision to start assist), the warning light illuminates.	The ECU judges the system has returned to normal	-
U0126	Lost Communication With Steering Angle Sensor Module	Lost communication with steering angle sensor	CAN communication system Steering sensor Rack and pinion power steering gear assembly	EPS warning light: Comes on	The ECU judges the system has returned to normal	-
U0129	Lost Communication with Brake System Control Module	Lost communication with skid control ECU (Brake actuator assembly)	CAN communication system Skid control ECU (Brake actuator assembly) Rack and pinion power steering gear assembly	EPS warning light: Comes on	The ECU judges the system has returned to normal	-
U0132	Lost Communication with Ride Level Control Module	Lost communication with AVS ECU (absorber control ECU)	CAN communication system AVS ECU (Absorber control ECU)	EPS warning light: Does not come on	The ECU judges the system has returned to normal	w/ Adaptive Variable Suspension System
U023A	Lost Communication with Front Camera Module	Lost communication with forward recognition camera	CAN communication system Forward recognition camera Rack and pinion power steering gear assembly	EPS warning light: Does not come on	The ECU judges the system has returned to normal	-

PROCEDURE

1.	GO TO CAN COMMUNICATION SYSTEM

(a) Go to CAN communication system.

Click here

END