DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P163181

DTC Code DTC Name
P163181 Communication Error from ECM to VSC Invalid Serial Data Received

DESCRIPTION

The hybrid vehicle control ECU assembly sends signals such as A/T information signals, dynamic radar cruise control operation signals, brake operation demand signals, and buzzer operation demand signals to the skid control ECU assembly when the dynamic radar cruise control is operating. Therefore, if the skid control ECU assembly detects a communication error with the hybrid vehicle control ECU assembly, it sends a malfunction signal back to the hybrid vehicle control ECU assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
P163181 Communication Error from ECM to VSC Invalid Serial Data Received

w/o Full-speed range following function:


  • While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, the hybrid vehicle control ECU assembly continuously receives a logical error signal from the skid control ECU assembly for approximately 1 second or more.

w/ Full-speed Range Following Function:


  • While the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar cruise control system is operating, the hybrid vehicle control ECU assembly continuously receives a logical error signal from the skid control ECU assembly for approximately 1 second or more.

  • CAN communication system

  • Hybrid vehicle control ECU assembly

  • Skid control ECU assembly

CAUTION / NOTICE / HINT

Note

First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting.

Click here

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 system DTCs are not output OK
      CAN communication system DTCs are output NG

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  2. CHECK FOR DTCs (RADAR CRUISE 1)


    1. Clear the DTCs.

      Click here


      Powertrain > Cruise Control > Clear DTCs

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.

    3. Check for DTCs.

      Click here


      Powertrain > Cruise Control > Trouble Codes
      Result
      Result Proceed to
      DTC P163181 is not output A
      DTC P163181 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  3. REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY


    1. Replace the hybrid vehicle control ECU assembly with a new one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK FOR DTCs (RADAR CRUISE 1)


    1. Clear the DTCs.

      Click here


      Powertrain > Cruise Control > Clear DTCs

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.

    3. Check for DTCs.

      Click here


      Powertrain > Cruise Control > Trouble Codes
      Result
      Result Proceed to
      DTC P163181 is not output A
      DTC P163181 is output B

    A

    END

    B

    REPLACE SKID CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE SKID CONTROL ECU ASSEMBLY for RHD: Click here