TOYOTA PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:U0101, U0129, U0155

DTC Code DTC Name
U0101 Lost Communication With TCM
U0129 Lost Communication with Brake System Control Module
U0155 Lost Communication With Instrument Panel Cluster (IPC) Control Module

DESCRIPTION

These DTCs are stored when the clearance warning ECU cannot receive and recognize certain signals via the CAN communication system.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0101 Lost Communication With TCM A problem with the engine information signal from the ECM. CAN communication system
U0129 Lost Communication with Brake System Control Module A problem with the brake information signal from the brake actuator assembly (skid control ECU) CAN communication system
U0155 Lost Communication With Instrument Panel Cluster (IPC) Control Module A problem with the vehicle speed information signal from the combination meter assembly CAN communication system

Tech Tips

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

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Clearance Sonar > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Clearance Sonar > Trouble Codes
      Result
      Result Proceed to
      CAN communication system DTCs are not output A
      CAN communication system (for RHD) DTCs are output B
      CAN communication system (for LHD) DTCs are output C

    A

    GO TO CAN COMMUNICATION SYSTEM (for RHD) Click here

    B

    GO TO CAN COMMUNICATION SYSTEM (for LHD) Click here

    C

    USE SIMULATION METHOD TO CHECK Click here