DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:U012287, U029387, U110487

DTC Code DTC Name
U012287 Lost Communication with Vehicle Dynamics Control Module Missing Message
U029387 Lost Communication With Hybrid Powertrain Control Module Missing Message
U110487 Lost Communication with Driving Support ECU Missing Message

DESCRIPTION

The hybrid vehicle control ECU assembly communicates with each sensor and ECU via CAN communication.

If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
U012287 Lost Communication with Vehicle Dynamics Control Module Missing Message When the power switch is on (IG) and the dynamic radar cruise control system is operating, a communication error between the skid control ECU assembly and the hybrid vehicle control ECU assembly is detected for approximately 2.6 seconds or more.

  • CAN communication system

  • Hybrid vehicle control ECU assembly

  • Skid control ECU assembly
U029387 Lost Communication With Hybrid Powertrain Control Module Missing Message

w/o Full-speed range following function:


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

w/ Full-speed Range Following Function:


  • While the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar cruise control system is operating, the hybrid vehicle control ECU assembly continuously receives a communication cut-off signal from the skid control ECU assembly for approximately 1 second or more.

  • CAN communication system

  • Hybrid vehicle control ECU assembly

  • Skid control ECU assembly
U110487 Lost Communication with Driving Support ECU Missing Message

w/o Full-speed range following function:


  • 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 hybrid vehicle control ECU assembly is detected for 1 second or more.

w/ Full-speed Range Following Function:


  • While the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar cruise control system is operating, a communication error between the driving support ECU assembly and hybrid vehicle control ECU assembly is detected for 1 second or more.

  • CAN communication system

  • Hybrid vehicle control ECU assembly

  • Driving support ECU assembly

PROCEDURE


  1. CHECK FOR DTCs (RADAR CRUISE 1)


    1. Clear the DTCs.

      Click here


      Powertrain > Cruise Control > Clear DTCs

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

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

    3. Check for DTCs.

      Click here


      Powertrain > Cruise Control > Trouble Codes
      Result
      Result Proceed to
      DTC U012287, U029387 and U110487 are not output A
      DTC U012287, U029387 or U110487 is not output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here