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 (distance control ECU) and ECM always communicate the data for vehicle general control and diagnosis function each other through communication line.

The driving support ECU determines the distance, relative speed, and target deceleration speed based on the signal from the millimeter wave radar sensor, 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 is logically inconsistent for a certain amount of time, the ECM records this logical error code

  • Driving support ECU

  • ECM

INSPECTION PROCEDURE

PROCEDURE


  1. REPLACE DRIVING SUPPORT ECU


    1. Replace the driving support ECU Click here.


    NEXT

  2. CHECK DTC


    1. Clear the DTCs Click here.

    2. 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 of 50 km/h (31 mph) or more.

      2. Turn the cruise control main switch on.

      3. Push the -SET switch to activate the cruise control.

    3. Check for DTCs Click here.

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

    B

    REPLACE ECM Click here

    A

    END