DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P1617

DTC Code DTC Name
P1617 Distance Control ECU Malfunction

DESCRIPTION

In the dynamic radar cruise control system, the ECM and the driving support ECU (distance control ECU) communicate with one another to control the system based on some designation information. If the designation information of the ECM and driving support ECU is different or the driving support ECU is malfunctioning, this DTC is recorded.

DTC No. DTC Detection Condition Trouble Area
P1617 While the dynamic radar cruise control is either preparing for operation or operating, if a designation signal from the ECM and a designation return signal from the driving support ECU do not match or the driving support ECU is malfunctioning for more than a specific amount of time, the ECM records this trouble 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 OUTPUT


    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. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC P1617 is output B

    B

    REPLACE ECM Click here

    A

    END