CRUISE CONTROL SYSTEM(for 8NR-FTS), Diagnostic DTC:P163081

DTC Code DTC Name
P163081 Communication Error from VSC to ECM Invalid Serial Data Received

DESCRIPTION

The brake actuator assembly (skid control ECU) sends signals such as cruise control cancel signals and brake demand response signals to the ECM when the cruise control system is operating.

DTC No. Detection Item DTC Detection Condition Trouble Area
P163081 Communication Error from VSC to ECM Invalid Serial Data Received While the cruise control system is either preparing for operation or operating, communication data from the brake actuator assembly (skid control ECU) is logically inconsistent for a certain amount of time.

  • Communication circuit

  • Brake actuator assembly (skid control ECU)

  • 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 dynamic radar cruise control system after confirming that the communication systems are functioning properly.

    Click here

  • Before replacing the ECM, refer to Service Bulletin.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Using the GTS, check if the CAN communication system is functioning normally.

      Click here

      Result
      Result Proceed to
      CAN communication is normal OK
      CAN communication is malfunctioning NG

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  2. REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)


    1. Replace the brake actuator assembly (skid control ECU).

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK FOR DTCS (DTC P163081)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Clear the DTCs.

      Click here


      Powertrain > Cruise Control > Clear DTCs

    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 system operation is possible.

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

    5. Enter the following menus: Powertrain / Cruise Control / Trouble Codes.

    6. Check for DTCs.


      Powertrain > Cruise Control > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTC P163081 is output B

    A

    END

    B

    REPLACE ECM Click here