LEXUS PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:U0101

DTC Code DTC Name
U0101 Lost Communication with TCM

DESCRIPTION

This DTC is stored when the clearance warning ECU*1 or parking assist ECU*2 can not receive and recognize several signals via the CAN communication system.

DTC No. DTC Detection Condition Trouble Area
U0101

  • A problem with the shift position information signal from the power management control ECU

  • When the parking assist ECU cannot judge the vehicle model (ENG/ HV)*2

  • CAN communication system

  • Parking assist ECU*2

Tech Tips

When 2 or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harness of each ECU.

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC OUTPUT (U0101)


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC U0101 is output A
      No DTC is output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      w/ Parking Assist Monitor System A
      w/o Parking Assist Monitor System B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  3. CHECK DTC OUTPUT (C168D)


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      No DTC is output A
      DTC C168D (Parking Assist Monitor System) is output B

      Tech Tips

      If DTC U0101 is still output after performing the procedure to troubleshoot DTC C168D, replace the parking assist ECU.


    B

    GO TO PARKING ASSIST MONITOR SYSTEM Click here

    A

    GO TO CAN COMMUNICATION SYSTEM Click here