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 driving support ECU communicate with one another to control the system based on certain designation information. If the designation information of the ECM and driving support ECU are different or the driving support ECU is malfunctioning, this DTC is stored.

DTC Code DTC Detection Condition Trouble Area
P1617 While the vehicle speed is 50 km/h (31 mph) or more with the cruise control switch on 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 1 second. Driving support ECU

INSPECTION PROCEDURE

PROCEDURE


  1. INITIALIZATION


    1. for LHD:

      Initialize the driving support ECU Click here.

    2. for RHD:

      Initialize 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 P1617 is not output.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE DRIVING SUPPORT ECU Click here

    C

    REPLACE DRIVING SUPPORT ECU Click here

    A

    END