DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P1615

DTC Code DTC Name
P1615 Communication Error from Distance Control ECU to ECM

DESCRIPTION

The driving support ECU assembly and ECM always communicate the data for vehicle general control and diagnosis function to each other via a communication line.

The driving support ECU assembly determines the distance, relative speed, and target deceleration speed based on the signals from the millimeter wave radar sensor assembly, and it sends a control demand signal to the ECM.

DTC No. Detection Item DTC Detection Condition Trouble Area
P1615 Communication Error from Distance Control ECU to ECM While the dynamic radar cruise control is either preparing for operation or operating, communication data from the driving support ECU assembly is logically inconsistent for a certain amount of time, the ECM stores this DTC.

  • Driving support ECU assembly

  • ECM

CAUTION / NOTICE / HINT

Note

The dynamic radar cruise control system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the dynamic radar cruise control system after confirming that the communication systems are functioning properly.

Click here

PROCEDURE


  1. REPLACE DRIVING SUPPORT ECU ASSEMBLY


    1. Replace the driving support ECU assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTCS (DTC P1615)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Clear the DTCs.

      Click here

    4. Perform the following to make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the malfunction cannot be detected.


      1. Drive the vehicle at a speed for which cruise control operation is possible.

      2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON-OFF button).

    5. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.

    6. Check for DTCs.


      Powertrain > Radar Cruise > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTC P1615 is output B

    7. Turn the engine switch off.


    A

    END

    B

    REPLACE ECM Click here