Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001450B
Model Year Start: 2018 Model: Camry Prod Date Range: [03/2017 - 10/2020]
Title: CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM (w/ Steering Control): U0100,U0123,U0126,U0129,U0131,U0142,U0155; Lost Communication with ECM / PCM "A"; 2018 - 2020 MY Camry [03/2017 - 10/2020]

DTC

U0100

Lost Communication with ECM / PCM "A"

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 Instrument Panel Cluster (IPC) Control Module (Combination Meter)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U0100

Lost Communication with ECM / PCM "A"

After the ignition switch is turned to ON for 3 seconds or more, when the vehicle is being driven at a speed of 5 km/h (4 mph) or more, a communication error between the ECM and forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • ECM
  • Forward recognition camera

U0123

Lost Communication with Yaw Rate Sensor Module

After the power switch is turned on (IG) for 3 seconds or more, when the vehicle is being driven at a speed of 5 km/h (4 mph) or more, a communication error between the yaw rate sensor (airbag sensor assembly) and forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Yaw rate sensor (Airbag sensor assembly)
  • Forward recognition camera

U0126

Lost Communication with Steering Angle Sensor Module

After the ignition switch is turned to ON for 3 seconds or more, a communication error between the steering sensor and forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Steering sensor
  • Forward recognition camera

U0129

Lost Communication with Brake System Control Module

After the ignition switch is turned to ON for 3 seconds or more, a communication error between the skid control ECU (brake actuator assembly) and forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Skid control ECU (Brake actuator assembly)
  • Forward recognition camera

U0131

Lost Communication with Power Steering Control Module

After the ignition switch is turned to ON for 3 seconds or more, when the vehicle is being driven at a speed of 5 km/h (4 mph) or more, a communication error between the power steering ECU (rack and pinion power steering gear assembly) and forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Power steering ECU (Rack and pinion power steering gear assembly)
  • Forward recognition camera

U0142

Lost Communication with Body Control Module "B"

After the ignition switch is turned to ON for 3 seconds or more, a communication error between the main body ECU (multiplex network body ECU) and forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Main body ECU (Multiplex network body ECU)
  • Forward recognition camera

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter)

After the ignition switch is turned to ON for 3 seconds or more, a communication error between the combination meter assembly and forward recognition camera is detected for approximately 50 seconds or more.
  • CAN communication system
  • Combination meter assembly
  • Forward recognition camera

PROCEDURE

1.

CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)

(a) Clear the DTCs.

Chassis > LKA/LDA > Clear DTCs

(b) Perform the following procedure.

HINT:

If the following procedure is not performed, the previously output DTC cannot be detected.

  1. Turn the ignition switch to ON and wait 1 minute or more.
  2. Drive the vehicle at a speed of 5 km/h (4 mph) or more for 5 seconds or more.

(c) Check for DTCs.

Chassis > LKA/LDA > Trouble Codes

Result

Proceed to

DTC U0100, U0123, U0126, U0129, U0131, U0142 and U0155 are not output

A

DTC U0100, U0123, U0126, U0129, U0131, U0142 or U0155 is output

B
A

USE SIMULATION METHOD TO CHECK 2018 MY Camry [03/2017 - 06/2017]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2018 MY Camry [06/2017 - 08/2018]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2019 MY Camry [08/2018 - 09/2019]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2020 MY Camry [09/2019 - 03/2020]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2020 MY Camry [03/2020 - 10/2020]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

B

GO TO CAN COMMUNICATION SYSTEM