DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P1616

DTC Code DTC Name
P1616 Communication Error from ECM to Distance Control ECU

DESCRIPTION

The ECM receives signals from each sensor and ECU, then sends signals such as A/T signals, cruise control operation signals, low speed operation signals, brake control operation signals, and radar light emission prohibiting signals to the driving support ECU assembly. The ECM is the only component that has a function to store and output DTCs in the dynamic radar cruise control system. Therefore, if the driving support ECU assembly detects a communication error from the ECM, it sends a malfunction signal back to the ECM.

DTC No. DTC Detection Condition Trouble Area
P1616 While the dynamic radar cruise control is either preparing for operation or operating, if the ECM continuously receives a logical error signal from the driving support ECU assembly for more than a specific amount of time, the ECM stores this DTC.

  • ECM

  • Driving support ECU assembly assembly

INSPECTION PROCEDURE

PROCEDURE


  1. REPLACE ECM

    Click here


    NEXT

  2. CHECK FOR DTCs (DTC P1616)


    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 cruise control switch on.

    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 P1616 is output B

    7. Turn the engine switch off.


    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    A

    END