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 receives information about the area in front of the vehicle from the millimeter wave radar sensor and then sends brake control demand signals (deceleration demand) and diagnosis signals, such as millimeter wave radar sensor grime signals or millimeter wave radar sensor malfunction signals, to the ECM.

DTC Code DTC Detection Condition Trouble Area
P1615 While the vehicle speed is 50 km/h (31 mph) or more with the cruise control switch on, communication data from the driving support ECU is logically inconsistent for 1 second.

  • Driving support ECU

  • CAN communication system

  • ECM

PROCEDURE


  1. REPLACE DRIVING SUPPORT ECU


    1. for LHD:

      Replace the driving support ECU Click here.

    2. for RHD:

      Replace the driving support ECU Click here.


    NEXT

  2. CHECK FOR DTC


    1. Clear the DTCs Click here.

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

      Tech Tips

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


      1. Drive the vehicle at a speed of 50 km/h (31 mph) or more.

      2. Turn the cruise control switch on.

    3. Check for DTCs Click here.

      OK
      DTC P1615 is not output.

    OK

    END (DRIVING SUPPORT ECU IS DEFECTIVE)

    NG

    REPLACE ECM Click here