Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001BE48
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 - 08/2021]
Title: CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM (w/ Steering Control) (for HV Model): U0101,U0123,U0126,U0129,U0131,U0142,U0155,U0293; Lost Communication with TCM; 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]

DTC

U0101

Lost Communication with TCM

DTC

U0123

Lost Communication with Yaw Rate Sensor Module

DTC

U0126

Lost Communication with Steering Angle Sensor Module

DTC

U0129

Lost Communication with Brake System Control Module

DTC

U0131

Lost Communication with Power Steering Control Module

DTC

U0142

Lost Communication with Body Control Module "B"

DTC

U0155

Lost Communication with Combination Meter

DTC

U0293

Lost Communication with HV ECU

DESCRIPTION

When a malfunction is detected between various ECUs and sensors, these DTCs are stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U0101

Lost Communication with TCM

2 seconds after the power switch is turned on (IG), while the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the TCM (hybrid vehicle control ECU) and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U0123

Lost Communication with Yaw Rate Sensor Module

2 seconds after the power switch is turned on (IG), while the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the yaw rate sensor (airbag ECU assembly) and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U0126

Lost Communication with Steering Angle Sensor Module

2 seconds after the power switch is turned on (IG), a communication error between the steering sensor and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U0129

Lost Communication with Brake System Control Module

2 seconds after the power switch is turned on (IG), a communication error between the skid control ECU (brake booster with master cylinder assembly) and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U0131

Lost Communication with Power Steering Control Module

2 seconds after the power switch is turned on (IG), a communication error between the power steering ECU (rack and pinion power steering gear assembly) and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U0142

Lost Communication with Body Control Module "B"

2 seconds after the power switch is turned on (IG), a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U0155

Lost Communication with Combination Meter

2 seconds after the power switch is turned on (IG), a communication error between the combination meter assembly and the forward recognition camera is detected for approximately 50 seconds or more.

CAN communication system

U0293

Lost Communication with HV ECU

2 seconds after the power switch is turned on (IG), a communication error between the hybrid vehicle control ECU and the forward recognition camera is detected for approximately 5 seconds.

CAN communication system

PROCEDURE

1.

CHECK FOR DTCs

(a) Clear the DTCs.

Chassis > LKA/LDA > Clear DTCs

(b) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

(c) Check for DTCs.

Chassis > LKA/LDA > Trouble Codes

Result

Proceed to

DTC U0101, U0123, U0126, U0129, U0131, U0142, U0155 and U0293 are not output

A

DTC U0101, U0123, U0126, U0129, U0131, U0142, U0155 or U0293 is output

B

A

USE SIMULATION METHOD TO CHECK

B

GO TO CAN COMMUNICATION SYSTEM