Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000ZX9P
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 - 11/2017]
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: U010008,U010087,U012287,U012387,U012687,U110487; Lost Communication with ECM/PCM "A" Bus Signal / Message Failure; 2017 MY Sienna [08/2016 - 11/2017]

DTC

U010008

Lost Communication with ECM/PCM "A" Bus Signal / Message Failure

DTC

U010087

Lost Communication with ECM/PCM "A" Missing Message

DTC

U012287

Lost Communication with Vehicle Dynamics Control Module Missing Message

DTC

U012387

Lost Communication with Yaw Rate Sensor Module Missing Message

DTC

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

DTC

U110487

Lost Communication with Driving Support ECU Missing Message

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

MIL

U010008

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

Does not come on

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)

Does not come on

U010087

While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, the ECM continuously receives a communication cut-off signal from the brake actuator assembly (skid control ECU) for approximately 1 second or more.

  • Communication circuit
  • ECM
  • Brake actuator assembly (Skid control ECU)

Does not come on

U012287

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

Does not come on

U012387

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

Does not come on

U012687

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

Does not come on

U110487

While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, a communication error between the driving support ECU assembly and ECM is detected for 1 second or more.

  • Communication circuit
  • ECM
  • Driving support ECU

Does not come on

PROCEDURE

1.

CHECK DTC (CAN COMMUNICATION SYSTEM)

(a) Check for DTCs (See page 2017 MY Sienna [08/2016 - 11/2017]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM ).

NEXT

CHECK CAN COMMUNICATION SYSTEM