Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM1000000018K3V
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM(w/ Steering Control): U0100,U0101,U0123,U0126,U0129,U0131,U0142,U0155; Lost Communication with ECM / PCM "A"; 2018 - 2020 MY Sienna [11/2017 -        ]

DTC

U0100

Lost Communication with ECM / PCM "A"

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

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"

While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the ECM and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • ECM
  • Forward recognition camera

U0101

Lost Communication with TCM

While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the TCM (ECM) and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • TCM (ECM)
  • Forward recognition camera

U0123

Lost Communication with Yaw Rate Sensor Module

While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the yaw rate sensor (airbag sensor assembly) and the 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

2 seconds after the ignition switch is turned to ON, a communication error between the steering sensor and the 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

2 seconds after the ignition switch is turned to ON, a communication error between the skid control ECU (brake actuator assembly) and the 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

2 seconds after the ignition switch is turned to ON, a communication error between the power steering ECU assembly and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Power steering ECU assembly
  • Forward recognition camera

U0142

Lost Communication with Body Control Module "B"

2 seconds after the ignition switch is turned to ON, 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
  • Main body ECU (Multiplex network body ECU)
  • Forward recognition camera

U0155

Lost Communication with Combination Meter

2 seconds after the ignition switch is turned to ON, a communication error between the combination meter assembly and the 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.

Click here 2018 - 2020 MY Sienna [11/2017 -        ]; CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM(w/ Steering Control): DTC CHECK / CLEAR

(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 1 km/h or 1 mph or more for 5 seconds or more.

(c) Check for DTCs.

Click here 2018 - 2020 MY Sienna [11/2017 -        ]; CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM(w/ Steering Control): DTC CHECK / CLEAR

Result

Proceed to

DTC U0100, U0101, U0123, U0126, U0129, U0131, U0142 and U0155 are not output

A

DTC U0100, U0101, U0123, U0126, U0129, U0131, U0142 or U0155 is output

B
A

USE SIMULATION METHOD TO CHECK

B

GO TO CAN COMMUNICATION SYSTEM