DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P1615

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

DESCRIPTION

This DTC is stored when a communication error occurs between the driving support ECU assembly and power management control ECU.

DTC No. DTC Detection Condition Trouble Area
P1615 When the power switch is on (IG), a communication error between the power management control ECU and the driving support ECU assembly is detected for 0.5 seconds or more.

  • Driving support ECU assembly

  • Power management control ECU

WIRING DIAGRAM

Refer to DTC C1A40 Click here.

INSPECTION PROCEDURE

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.

  • If the power management control ECU is replaced, refer to Registration Click here.

PROCEDURE


  1. CHECK FOR DTCs (DYNAMIC RADAR CRUISE CONTROL SYSTEM)


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

    4. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.

    5. Check for DTCs.

      Result
      Result Proceed to
      Dynamic radar cruise control system DTC is not output A
      Dynamic radar cruise control system DTC is output B

    B

    GO TO DTC CHART Click here

    A

  2. CHECK FOR DTCs (DTC P1615)


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

    4. Clear the DTCs Click here.

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

      3. Push the cruise control main switch to -/SET to begin control of vehicle speed using the cruise control system.

    6. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    7. Check for DTCs.

      Result
      Result Proceed to
      DTC P1615 is not output A
      DTC P1615 is output B

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  3. REPLACE DRIVING SUPPORT ECU ASSEMBLY


    1. Replace the driving support ECU assembly Click here.


    NEXT

  4. CHECK FOR DTCs (DTC P1615)


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

    4. Clear the DTCs Click here.

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

      3. Push the cruise control main switch to -/SET to begin control of vehicle speed using the cruise control system.

    6. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    7. Check for DTCs.

      Result
      Result Proceed to
      DTC P1615 is not output A
      DTC P1615 is output B

    B

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    A

    END (DRIVING SUPPORT ECU ASSEMBLY WAS DEFECTIVE)