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 through a communication line.

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

DTC No. DTC Detection Condition Trouble Area
P1615 While the dynamic radar cruise control is either preparing for operation or operating, if 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

INSPECTION PROCEDURE

PROCEDURE


  1. REPLACE DRIVING SUPPORT ECU ASSEMBLY

    Replace the driving support ECU assembly Click here for LHD, Click here for RHD).


    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 switch (ON-OFF button).

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

    6. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC P1615 is output B

    7. Turn the engine switch off.


    B

    REPLACE ECM Click here

    A

    END