Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VII6
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 08/2016]
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: U0100,U0122,U0123,U0126,U1104; Lost Communication with ECM / PCM "A"; 2016 MY Sienna [12/2015 - 08/2016]

DTC

U0100

Lost Communication with ECM / PCM "A"

DTC

U0122

Lost Communication with Vehicle Dynamics Control Module

DTC

U0123

Lost Communication with Yaw Rate Sensor Module

DTC

U0126

Lost Communication with Steering Angle Sensor Module

DTC

U1104

Lost Communication with Driving Support ECU

DESCRIPTION

The ECM communicates several signals with each sensor and ECU by CAN communication circuit.

If there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system are output.

DTC No.

DTC Detection Condition

Trouble Area

U0100

While the dynamic radar cruise control is either preparing for operation or operating, if the ECM continuously receives a communication cut off signal from the driving support ECU for more than a specific amount of time, the ECM records this communication cut off code
  • Communication circuit
  • ECM
  • Driving support ECU

While the dynamic radar cruise control is either preparing for operation or operating, if the ECM continuously receives a communication cut off signal from the skid control ECU for a certain amount of time, the ECM records this communication cut off code
  • Communication circuit
  • ECM
  • Brake actuator assembly (Skid control ECU)

U0122

While dynamic radar cruise control is either preparing for operation or operating, if communication data from the skid control ECU is invalid for a certain amount of time, the ECM records the communication cut off code
  • Communication circuit
  • Brake actuator assembly (Skid control ECU)
  • ECM

U0123

While the dynamic radar cruise control is either preparing for operation or operating, the ECM continuously receives a yaw rate and acceleration sensor malfunction signal for a certain amount of time
  • Communication circuit
  • Yaw rate and acceleration sensor
  • Driving support ECU
  • ECM

U0126

While the dynamic radar cruise control is either preparing for operation or operating, if the ECM continuously receives a steering sensor communication error signal for a certain amount of time, the driving support ECU sends a signal to the ECM to record this trouble code
  • Communication circuit
  • Steering angle sensor
  • Driving support ECU
  • ECM

U1104

While dynamic radar cruise control is either preparing for operation or operating a communication stop between the driving support ECU and ECM for a certain amount of time.
  • Driving support ECU
  • Communication circuit
  • ECM

PROCEDURE

1.

CHECK DTC (CAN COMMUNICATION SYSTEM)

(a) Check for DTCs (See page 2016 MY Sienna [12/2015 - 08/2016]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM ).

NEXT

CHECK CAN COMMUNICATION SYSTEM