CRUISE CONTROL SYSTEM(for 1ND-TV), Diagnostic DTC:P1615

DTC Code DTC Name
P1615 Communication Error from Distance Control ECU to ECM

DESCRIPTION

The driving support ECU assembly and ECM always communicate the data for vehicle general control and diagnosis function to each other via a communication line.

The driving support ECU assembly sends a control demand signal to the ECM.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

P1615

Communication Error from Distance Control ECU to ECM

While the cruise control is either preparing for operation or operating, communication data from the driving support ECU assembly is logically inconsistent for a certain amount of time, the ECM stores this DTC.

  • Driving support ECU assembly

  • ECM

CAUTION / NOTICE / HINT

Note:

The cruise control system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the cruise control system after confirming that the communication systems are functioning properly.

Click here

PROCEDURE

  1. REPLACE DRIVING SUPPORT ECU ASSEMBLY

    1. Replace the driving support ECU assembly.

      Click here

      Note:

      When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.

    Result

    Proceed to

    NEXT
    NEXT

  2. CHECK FOR DTCS (DTC P1615)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Clear the DTCs.

      Click here

      Powertrain > Engine and ECT > Clear DTCs

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

      Tip:

      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 system on using the cruise control switch (ON-OFF button).

    5. Check for DTCs.

      Click here

      Powertrain > Engine and ECT > Trouble Codes

    6. Turn the ignition switch off.

    Result

    Result

    Proceed to

    DTC P1615 is not output

    A

    DTC P1615 is output

    B
    A

    END (DRIVING SUPPORT ECU ASSEMBLY WAS DEFECTIVE)

    B

    REPLACE ECM

    Click here